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Showing papers in "Bangladesh Journal of Botany in 2015"


Journal ArticleDOI
TL;DR: In this article, the release of K from waste mica (muscovite and biotite) was tested with 4 K-solubilizing isolates collected from maize rhizosphere, for 7, 14 and 21 days of incubation at 28 ± 2°C.
Abstract: The release of K from waste mica (muscovite and biotite) was tested with 4 K-solubilizing isolates collected from maize rhizosphere, for 7, 14 and 21 days of incubation at 28 ± 2°C. K-solubilization by different bacterial isolates showed significant change on muscovite and biotite powder supplemented plates and the amount of K released varied from 1.28 - 46.75 μg/ml. The soluble K contents in all isolated treatments were significantly higher than control. Herein, isolate KSB 2 had higher K-solubilization ability when compared with other isolates (KSB 1 , KSB 3 and KSB 4 ) in vitro DOI: http://dx.doi.org/10.3329/bjb.v43i2.21680 Bangladesh J. Bot. 43 (2): 235-237, 2014 (September)

137 citations


Journal ArticleDOI
TL;DR: In this article, the effect of concentrate organic manure (wellgrow grain and wellgrow soil) and NPK improved the growth and yield of wheat significantly in terms of growth parameters like plant height, tillers, dry matter production and productive tillers.
Abstract: Effect of concentrate organic manure (wellgrow grain and wellgrow soil) and NPK improved the growth and yield of wheat Significant improvement in terms of growth parameters like plant height, tillers, dry matter production and productive tillers with application of 120 : 60 : 60 NPK + 300 kg wellgrow soil/ha and at par with application of 120 : 60 : 60 NPK + 300 kg wellgrow grain/ha, treatment receiving 100% NPK + 300 kg wellgrow soil/ha resulted maximum grain yield (4545 kg /ha) Treatment of 100% NPK + 300 kg wellgrow grain/ha maintained higher straw yield (5715 kg/ha) and test weight (4410 g) due to application of 100 % NPK along with 200 kg wellgrow soil/ha whereas it was at par with application of 75 and 100% NPK with both levels of wellgrow formulation DOI: http://dxdoiorg/103329/bjbv44i122738 Bangladesh J Bot 44 (1): 143-146, 2015 (March)

71 citations


Journal ArticleDOI
TL;DR: Aggressivity values showed that inter crop mungbean did not offer any competition to pearl millet in different row ratio, while relative crowding coefficient (RCC) values indicated was a yield disadvantage in mung bean in all the intercropping system except 1: 7 row ratio.
Abstract: A field experiment was conducted during kharif season, 2011 to evaluate different row ratio of pearl millet with mungbean in the arid region of Rajasthan. The treatments comprised of sole pearl millet at 45 cm spacing, one sole mungbean and ten pearl millet with mungbean treatments row in different ratio. The intercropping of pearl millet with mungbean in 1 : 7, followed by 2 : 6 and 1: 3 row ratio produced maximum pearl millet equivalent yield (PMEY), land equivalent ratio (LER), aggresivity , net returns,benefit cost (B : C) ratio and also better nutrient uptake by these treatments compared to sole and other intercropping treatments. Aggressivity values showed that inter crop mungbean did not offer any competition to pearl millet in different row ratio, while relative crowding coefficient (RCC) values indicated was a yield disadvantage in mungbean in all the intercropping system except 1: 7 row ratio. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21616 Bangladesh J. Bot. 43 (3): 367-370, 2014 (December)

70 citations


Journal ArticleDOI
TL;DR: An experiment was conducted during Kharif seasons of 2009 and 2010 on groundnut under western dry zone of India following a split-plot design and variety ‘HNG 10’ and ‘TG 37A’ sown at July 4 had significantly higher yield attributes and yields than earlier sowing.
Abstract: An experiment was conducted during Kharif seasons of 2009 and 2010 on groundnut (Arachis hypogaea L.) under western dry zone of India following a split-plot design with four dates of sowing (April 20, May 15, June 9 and July 4) and two varieties (HNG 10 and TG 37A) in main- plot and four fertility levels (0, 20 N : 40 P2O5, 30 N : 60 P2O5 and 40 N : 80 P2O5 kg /ha) in sub-plot. Yield component of semispreading variety ‘HNG 10’ i.e. pods/plant, number of kernel/pod, seed index, shelling percentage and yields i.e. pod, kernel, haulm and biological yield were statistically at par with each other from April 20 to June 9 sowing and minimum yield was observed in July 4 sowing, while days to maturity reduced significantly with delay sowing. Variety ‘TG 37A’ sown at July 4 had significantly higher yield attributes and yields than earlier sowing. Harvest index in both the varieties was observed significantly higher in July 4 sowing. Significantly higher yield components and yields were recorded in 30 kg N-60 kg P2O5/ha which was statistically at par with 40 kg N-80 kg P2O5 /ha. On the basis of economics, June 9 sowing variety ‘HNG 10’ of groundnut recorded significantly higher net return.

39 citations


Journal ArticleDOI
TL;DR: Out performed genotypes based higher yield potential, 100-seed weight, pods per plant and early maturity are identified for guar variety development and future breeding programme suited for South India.
Abstract: Twelve quantitative characters were taken under observation to estimate substantial variation and relationship among Guar ( Cyamopsis tetragonoloba (L.)Taub.,Fam.: Fabaceae) genotypes and to identify the best performing lines suited to southern parts of India, where the potential of growing the guar crop throughout the year. Analysis of variation for such quantitative traits in diverse line showed considerable and dissimilar level of variability. The largest variation was found for days to maturity, plant height, pods per plant and cluster per plant. Single plant yield was significant positively correlated with primary branches per plant, secondary branch per plant, cluster per plant, pods per cluster, pods per plant, however pod length was significant but negatively correlated with single plant yield. Principal component analysis showed the amount of variation by principal components 1 to 5 viz., 38, 16.4, 12.5, 9.5 and 6.6%, respectively. Clustering analysis based on various morphological traits assorted 42 guar genotypes into four main groups and six subclusters. Dendrogram based on hierarchal clustering grouped genotypes based on their morphological traits rather than geographic origin. Grouping of genotypes based on morphological traits is not always associated with their geographical origin. Out performed genotypes based higher yield potential, 100-seed weight, pods per plant and early maturity are identified for guar variety development and future breeding programme suited for South India. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22724 Bangladesh J. Bot. 44 (1): 59-65, 2015 (March)

19 citations


Journal Article
TL;DR: In this article, the authors used 1% chitosan (CS) and 5% nanocellulose (NCC) composite and storing at 20°C for 7 days decreased weight loss and decay percentage by 14.4 and 70.6%, respectively.
Abstract: Coating of strawberries with 1% chitosan (CS) and 5% nanocellulose (NCC) composite and storing at 20°C for 7 days decreased weight loss and decay percentage by 14.4 and 70.6%, respectively, as compared to the control. The content of pH and titratable acidity was not significantly different from the control. Total soluble solids (TSS) content was lower due to decrease in senescence and metabolism. The NCC/CS composite coatings had a positive effect on maintaining higher concentrations of total phenols and total anthocyanins which decreased in control fruit due to senescence processes. Sensory evaluation showed that the NCC/CS composite coatings had better visual appearance. Results of this study confirm that the NCC/CS composite coatings are useful for extending the shelf life and maintaining quality of strawberries.

18 citations


Journal ArticleDOI
TL;DR: Thirty genotypes of chilli were evaluated in RBD with three replications at vegetable research farm, CHF, CAU, Pasighat, Arunachal Pradesh, India during kharif, 2011 to study the character association and contribution.
Abstract: Thirty genotypes of chilli were evaluated in RBD with three replications at vegetable research farm, CHF, CAU, Pasighat, Arunachal Pradesh, India during kharif , 2011. Variability, correlation and path analysis were carried out to study the character association and contribution, respectively. Analysis of variance revealed significant differences among the genotypes for all traits. High PCV and GCV, heritability, genetic advance were observed for days to first flowering, plant height, number of seed per fruit, number of fruit per plant, ascorbic acid and fruit yield per plant. Correlation indicated that fruit yield per plant was positively and significantly correlated with number of branch per plant, number of fruit per plant and chlorophyll content while negative and significant association was established with ascorbic acid content. Maximum positive direct effect on fruit yield per plant was imposed by fruit weight, number of fruit per plant, number of seed per fruit and capsaicin content. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21600 Bangladesh J. Bot. 43 (3): 283-291, 2014 (December)

16 citations


Journal ArticleDOI
TL;DR: Three new species belonging to the family Orbiliaceae were recorded to the Turkish mycobiota at family level and can be characterized by the presence of thin ascospores along with the small ascocarps.
Abstract: Orbilia curvatispora Bond., O. sarraziniana Bond. and O. xanthostigma (Fr) Fr. belonging to the family Orbiliaceae were recorded. Since, these three taxa we have been considered on new report to the Turkish mycobiota at family level. These species can be characterized by the presence of thin ascospores along with the small ascocarps. An identification key were also given in the text for the species. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22729 Bangladesh J. Bot. 44 (1): 91-95, 2015 (March)

16 citations


Journal ArticleDOI
TL;DR: The results of SEM at higher magnification showed three types of achene surface patterns: glebulate-ruminate, smooth, and rugose, and in these patterns, there were diagnostic characteristics and differences at the specific level for Centaurea.
Abstract: This article investigates the exomorphic characteristics of the achenes which are achene size, color, and surface pattern, and pappus length, and colour. All these characteristics in seven taxa of Asteraceae namely, C. aggregata Fisch. & C.A. Mey. ex DC. subsp. aggregata, C. sivasica Wagenitz, C. polypodiifolia Boiss. var. polypodiifolia, C. polypodiifolia Boiss. var. szowitziana (Boiss.) Wagenitz, C. iberica Trev. ex Spreng, C. urvillei DC. subsp. stepposa Wagenitz, and C. carduiformis DC. subsp. carduiformis var. carduiformis in are described, illustrated and compared. The results of SEM at higher magnification showed three types of achene surface patterns: glebulate-ruminate, smooth, and rugose. In these patterns, there were diagnostic characteristics and differences at the specific level for Centaurea. A key to the taxa has been provided on the basis of these achene characteristics. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21668 Bangladesh J. Bot. 43 (2): 163-168, 2014 (September)

15 citations


Journal ArticleDOI
TL;DR: The genotypes of Ergan mountain, Erzican, Turkey were studied and documented, and five taxa namely, Allium armenum Boiss, Lyia (Baker) Marais recorded from the study area are endemic to Turkey.
Abstract: The genotypes of Ergan mountain, Erzican, Turkey were studied and documented. A total of 25 taxa belonging to 14 genera and 9 families have been collected in this study. Local name, used plant parts and the ethnobotanical uses of the geophyte - species were determined. Of the recorded taxa, 48% belonged to Irano- Twianian phytogeographic region, 12% to Europe-Siberian region and 4% to Mediterranean region. Five taxa namely, Allium armenum Boiss. & Kotschy, A. sintenisii Freyn, Muscentoiceleste Formin, Fritillaria pinardii Boiss. and Tulipa armena sbusp. Lyia (Baker) Marais recorded from the study area are endemic to Turkey. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21604 Bangladesh J. Bot. 43 (3): 315-321, 2014 (December)

15 citations


Journal ArticleDOI
TL;DR: The grouping of genotypes and hybridization among genetically diverse genotypes of different cluster would be helpful in broadening the genetic base of field pea and producing desirable recombinants for developing new fieldpea varieties.
Abstract: One hundred and 40 genotypes of fieldpea were used to assess the genetic divergence for various agronomic traits. The study revealed that all the accessions were significantly different for the traits and a wide range of variability exists for most of the traits. Correlation studies exhibited that seed yield had positive significant correlation with most of the traits. Cluster analysis classified 140 genotypes into 12 distinct groups. A large number of genotypes (30) were placed in cluster IV followed by cluster III with 24 genotypes. The maximum inter-cluster distance was observed between clusters III and IV indicating the possibility of high heterotic effect if the individuals from these clusters are cross-bred. Principal component analysis yielded 12 Eigen vectors and PCA analysis revealed significant variations among traits with seven major principal components explaining about 90% of variations. The estimates of Eigen value associated with the principal components and their respective relative and accumulated variances explained 50.16% of total variation in the first two components. The characters with highest weight in component first were biological yield, pods/plant, yield/plant and branches/plant which explained 34.22% of the total variance. The results of principal component analysis were closely in line with those of the cluster analysis. The grouping of genotypes and hybridization among genetically diverse genotypes of different cluster would be helpful in broadening the genetic base of fieldpea and producing desirable recombinants for developing new fieldpea varieties. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21605 Bangladesh J. Bot. 43 (3): 323-330, 2014 (December)

Journal ArticleDOI
TL;DR: It was concluded that together with other measures, the fractal dimensions with surface density function could be used as a new approach to taxonomical study of plants.
Abstract: Fractal dimensions of leaves from Cercis canadensis L., Robinia pseudoacacia L., Amelanchier arborea (F.Michx.) Fernald, Prunus persica (L.) Batsch, Quercus alba L., Carpinus caroliniana Walter, Ficus carica L., Morus rubra L., Platanus orientalis L., and Ulmus rubra Muhl. were calculated. The values were then confirmed and compared by those obtained from box-counting method and the exponent values of densitydensity correlation function (first time in the literature). It is now proposed for the first time that there is a relationship between a fractal dimension of the leaf and a surface density of the image and was concluded that together with other measures, the fractal dimensions with surface density function could be used as a new approach to taxonomical study of plants. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21593 Bangladesh J. Bot. 43 (3): 267-275, 2014 (December)

Journal ArticleDOI
TL;DR: The genotypes ICCV 96904 and Himachal Chana-1 were found to be promising for seed yield and biologicalield per plant in pooled over the environments and could be considered as the best selection parameters for the improvement of seed yield per plant.
Abstract: This study estimates the nature and extent of genetic variability as well as direct and indirect effects of yield related traits on seed yield in 25 chickpea genotypes. The pooled analysis of variance over the environments indicated significant genotypes effect compared to genotype (g) × environment (e) interactions for all the characters. The mean values of the characters studied showed a wide spectrum of genetic variation. The genotypes ICCV 96904 and Himachal Chana-1 were found to be promising for seed yield and biological yield per plant in pooled over the environments. The phenotypic correlation coefficient revealed significant positive associations of pods per plant, harvest index, biological yield per plant and primary branches per plant with seed yield per plant. The path coefficient analysis revealed that biological yield per plant and harvest index exhibited positive and high direct effects on seed yield per plant. Therefore, these characters could be considered as the best selection parameters for the improvement of seed yield per plant. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22737 Bangladesh J. Bot. 44 (1): 139-142, 2015 (March)

Journal ArticleDOI
TL;DR: Out of seven soil fungi, Trichoderma harzianum was found most effective to control the growth of all the test fungi in the study of colony interactions and effects of volatile and non-volatile metabolites.
Abstract: Antagonistic potentials of seven rhizoshere soil fungi viz., Aspergillus flavus Link., A . fumigatus Fresen., A . niger Tiegh., A . terreus Thom., Penicillium sp., Trichoderma harzianum Refat. and T . viride Pers. were tested in opposition to six pathogenic fungi viz., Colletotrichum sp., Curvularia lunata, Fusarium moniliforme , F . oxysporum , F . semitectum and Phomopsis sp. isolated from different leaf spots and fruit rots of brinjal. Out of seven soil fungi, Trichoderma harzianum was found most effective to control the growth of all the test fungi in the study of colony interactions and effects of volatile and non-volatile metabolites. This fungus may be exploited commercially to biocontrol the diseases. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21675 Bangladesh J. Bot. 43 (2): 213-217, 2014 (September)

Journal ArticleDOI
TL;DR: Vascular area became smaller with less number of xylem vessels and smaller size of the cavity due to phosphorus deficiency, and the pith area was increased in the stem under phosphorus deficient condition.
Abstract: Phosphorus deficiency in lentil ( Lens culinaris Medik.) resulted in the development of abundant long root hairs which were rudimentary in plants fed with phosphorus. Root and stem diameter as well as thickness of leaf reduced under phosphorus deficiency. The cortical zone of the stem and root was found to decrease under phosphorus deficiency. Vascular area became smaller with less number of xylem vessels and smaller size of the cavity due to phosphorus deficiency. The pith area was increased in the stem under phosphorus deficient condition. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22726 Bangladesh J. Bot. 44 (1): 73-78, 2015 (March)

Journal ArticleDOI
TL;DR: It is suggested that wild rice germplasm accessions collected from natural habitat of Eastern Indo-Gangetic region of India are valuable resource and can be utilized for yield and yield traits besides disease and pest and should be conserved in transgressive segregation breeding programme of cultivated indica rice.
Abstract: Thirty five wild rice germplasm accessions collected from natural habitat of Eastern Indo-Gangetic region of India were evaluated to estimate their extent of genetic variability, agro-morphological divergence and relationship among themselves for 14 traits. The accessions showed significant genotypic coefficient of variation for all traits analyzed. The accessions were clustered into six groups, the cluster III contained the highest 12 accessions, and clusters I and IV comprised 11 and 7 accessions, respectively; while cluster II and VI have two accessions each, and clusters V was monogenotypic. The maximum intra-cluster distance was observed in cluster VI followed by clusters IV and II while in inter-cluster distance was observed between clusters V and VI followed by clusters II and V indicates wider genetic diversity between germplasm accessions. High heritability coupled with high genetic advance as per cent of mean was found in the traits filled grains per panicle, total number of grains per panicle and grain yield per plant. The result suggested that these accessions are valuable resource and can be utilized for yield and yield traits besides disease and pest. Therefore, these accessions should be conserved to utilize in transgressive segregation breeding programme of cultivated indica rice. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21607 Bangladesh J. Bot. 43 (3): 337-344, 2014 (December)

Journal ArticleDOI
TL;DR: Ten superior mutants, selected from 3 widely adapted genotypes of sesame, possessed high oil percentage with a better oil profile having relatively more polyunsaturated fatty acid content, specially linoleic acid, than the control, indicating potentiality of mutation breeding to restructure plants with high yield, improved oil percentage and quality.
Abstract: Thirty mutant lines selected from 3 widely adapted genotypes of sesame viz. Rama, SI 1666 and IC 21706 (ten from each of the three genotypes), developed by induced physical (?-rays) and chemical (EMS) mutagens, were evaluated against their respective control genotype for yield and its important attributes in M 4 generation to reveal the ramification of mutagens for disclosing the magnitude of variation among mutants in advance generation and also to identify the promising positive mutants to refurbish new improved varieties of sesame. Mutants professing higher seed yield were evaluated for oil quantity and quality. All selected mutant lines evinced improved seed yield over their respective controls. Irrespective of the genotypes highest yield was recorded in the line induced by 0.5% EMS. Based on mean seed yield and its components, selected 10 superior mutants, also possessed high oil percentage with a better oil profile having relatively more polyunsaturated fatty acid content, specially linoleic acid, than the control, indicating potentiality of mutation breeding to restructure plants with high yield, improved oil percentage and quality. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22718 Bangladesh J. Bot. 44 (1): 15-22, 2015 (March)

Journal ArticleDOI
TL;DR: Pooled data indicated highest seed cotton yield with application of MgSO 4 1.0%+ ZnSO 4 0.5% clearly supported its application benefits to realize higher yield.
Abstract: Field experiments were conducted for three years during Kharif 2009-2011 to study the effect of foliar application of nutrients (N, Mg, Fe, Zn, Mn and B) on growth and yield parameters of Bt cotton. Pooled data indicated highest seed cotton yield (3421.4 kg/ha) with application of MgSO 4 1.0%+ ZnSO 4 0.5%. Better net returns ( 100760/ha) and improved B:C (4.06) ratio for MgSO 4 1.0% + ZnSO 4 0.5% clearly supported its application benefits to realize higher yield . DOI: http://dx.doi.org/10.3329/bjb.v44i1.22717 Bangladesh J. Bot. 44 (1): 9-14, 2015 (March)

Journal ArticleDOI
TL;DR: Nine new cytoplasmic male sterile (CMS) analogues on the basis of different CMS sources were developed and evaluated for morphophysiological, yield and biochemical traits and the most prospective CMS analogues were designated for future use in hybrid breeding programme.
Abstract: Nine new cytoplasmic male sterile (CMS) analogues on the basis of different CMS sources were developed and evaluated for morphophysiological, yield and biochemical traits. Analysis of variance indicated significant differences between CMS analogues for all the traits. The genetic components analysis indicated that selection for grain yield accompanied with high harvest index, large head size and biological yield can be effectively used for genetic improvement in sunflower. D2analysis revealed sufficient diversity between CMS analogues which can be exploited for developing hybrids based on different cytoplasmic sources. Intra-cluster distance of 72.5 observed for the analogues present in cluster I (E002-91A, ARG-2A, DV-10A and PRUN-29A) revealed cytoplasmic dissimilarity between these sources. CMS ARG-3A was the most diverse CMS lines among all. As a result of this study the most prospective CMS analogues were designated for future use in hybrid breeding programme. The CMS analogues PRUN 29A and ARG 3 may be effectively used for developing high seed and oil yielding hybrids with desirable fatty acid composition. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22719 Bangladesh J. Bot. 44 (1): 23-30, 2015 (March)

Journal ArticleDOI
TL;DR: The top five potential leafy vegetables consist of both hydrophilic and lipophilic antioxidant(s), the order being I. aquatica > B. campestris > L. alba > P. sativum > and L. siceraria .
Abstract: Amount of polyphenols, flavonoids, anthocyanins in ethanol extracts and antioxidant activity of both ethanol and lipophilic extracts of common leafy vegetables in Bangladesh were compared. Among the 12 leafy vegetables, Ipomoea aquatica Forssk. showed the highest content of total polyphenols (38.9 mg gallic acid equivalent (GAE)/g extract) and flavonoids (23.2 mg (+)-catechin equivalent (CE)/g extract). Highest anthocyanins content was found in Amaranthus gangeticus L. (1.15 μmol/g extract) followed by Pisum sativum L. (0.85 μmol/g extract). Ethanol extracts of Brassica campestris L., Enhydra fluctuans Lour., I. aquatica , Lagenaria siceraria (Mol.) Standl. and P. sativum exhibited high DPPH free radical scavenging activity with IC 50 of 104.2, 85.5, 26.9, 125 and 68.5 μg/ml, respectively whereas for the same lipophilic pentane extracts of Basella alba L. showed the lowest (68.4 μg/ml) IC 50 followed by I. aquatica (70.4 μg/ml), E. fluctuans (75.7 μg/ml), L. siceraria (78.3 μg/ml) and B. campestris (80.6 μg/ml). I. aquatica also showed the highest NO free radical scavenging followed by B. campestris and B. alba . Highest reducing power (O.D. = 1.7) was observed for I. aquatica followed by P. sativum (O.D. = 1.12), B. alba (O.D. = 0.86) and L. siceraria (O.D. = 0.72) at 400 μg/ml extract. They also displayed high total antioxidant capacity. Therefore, the top five potential leafy vegetables consist of both hydrophilic and lipophilic antioxidant(s), the order being I. aquatica > B. campestris > B. alba > P. sativum > and L. siceraria . DOI: http://dx.doi.org/10.3329/bjb.v44i1.22723 Bangladesh J. Bot. 44 (1): 51-57, 2015 (March)

Journal ArticleDOI
TL;DR: In this article, a path coefficient analysis was performed in 65 genotypes of barnyard millet to find out the association studies of characters and their direct and indirect effects on grain yield/plant.
Abstract: Path coefficient analysis was studied in 65 genotypes of barnyard millet to find out the association studies of characters and their direct and indirect effects on grain yield/plant. Results exhibited that single earhead weight had maximum direct effects on grain yield/plant followed by straw yield/plant, earhead length and plant height. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22739 Bangladesh J. Bot. 44 (1): 147-150, 2015 (March)

Journal ArticleDOI
TL;DR: Present data and the average rate of increase of lignin production can be considered as a reference value for projects working on producing low-lignin - jute varieties.
Abstract: Stem lignin content of a mature jute plant was found to be around 29% giving a deposition rate of 0.21% per day. The study was made on individual plants of different ages starting from five weeks when they were big enough to produce sufficient dry mass for lignin estimation to 16 weeks of age when a jute plant is ready for retting. An intense rate of increase (1.15%) was found during the 7th week of growth, probably due to a rise in temperature. Present data and the average rate of increase of lignin production can be considered as a reference value for projects working on producing low-lignin - jute varieties. DOI: http://dx.doi.org/10.3329/bjb.v43i3.21603 Bangladesh J. Bot. 43 (3): 309-314, 2014 (December)

Journal ArticleDOI
TL;DR: Master plants fertilized with 250 ppm N and K fertigation through urea and MOP + 250 ppm NPK foliar spray through a water soluble fertilizer Sujala once a week is improved flowering as well as quality parameters and proved superior over the earlier recommended practices and the rest of the treatments.
Abstract: Carnation cv. Master plants fertilized with 250 ppm N and K fertigation through urea and MOP + 250 ppm NPK foliar spray through a water soluble fertilizer Sujala (19 : 19 : 19 NPK) once a week is improved flowering as well as quality parameters and proved superior over the earlier recommended practices and the rest of the treatments. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22736 Bangladesh J. Bot. 44 (1): 133-137, 2015 (March)

Journal ArticleDOI
TL;DR: In this paper, the chemical composition of the essential oil obtained from N. sativa was analyzed by GC/MS and the components identified were: p -cymene (22.05%), followed by α -thujene (6%), α-pinene (1.11%), camphene (11%), sabinene, β -pinene, 7%), β -myrcene (0.45%), limonene, 0.13), γ-terpinene and 5.12%), terpinolene (5.23%), camphor (1%),
Abstract: The chemical composition of the essential oil obtained from N. sativa was analyzed by GC/MS and the components identified were: p -cymene (22.05%) followed by α -thujene (6%), α -pinene (1.11%), camphene (11%), sabinene (1%), β -pinene (7%), β -myrcene (0.21%), α -phellandrene (0.45%), limonene (0.13), γ-terpinene (5.12%), terpinolene (0.23%), camphor (1%), carvone (0.32%), thymoquinone (20.32%), thymol (10.12%), carvacrol (10%), longicyclene (0.9%) and borneol (0.43). The oils were also subjected to screening for their possible antioxidant activity by using 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays. Thymol (13.0 ± 0.8 μg/ml), thymoquinone (12.6 ± 0.0 μg/ml) and carvacrol (12.03 ± 0.0 μg/ml) showed appreciable antioxidant activity in DPPH test. Antioxidant activity guided fractionation of the oil was carried out by the TLC-bioautography screening and fractionation resulted in the separation of the main antioxidant compound which were identified as thymoquinone (51%), thymol (25%) and carvacrol (8%). DOI: http://dx.doi.org/10.3329/bjb.v44i1.22732 Bangladesh J. Bot. 44 (1): 111-116, 2015 (March)

Journal ArticleDOI
TL;DR: The volatile constituents of the leaves of Anethum graveolens L., growing wild in Iran, were investigated by GC/MS, α-Phellandrene (29.12%), limonene (26.34%), dill ether (15.23%), α-pinene (2%), n -tetracosane (1.54%), sabinene ( 1.43%), n-docosane(1.04), n-tricosane, n -nonadecane, and α-tujene (0.78
Abstract: The volatile constituents of the leaves of Anethum graveolens L. , growing wild in Iran, were investigated by GC/MS, α-Phellandrene (29.12%), limonene (26.34%), dill ether (15.23%), α-pinene (2%), n -tetracosane (1.54%), sabinene (1.34%), neophytadiene (1.43%), n-docosane (1.04), n -tricosane (1%), n -nonadecane (1%), n -eicosane (0.78%), n -heneicosane (0.67%), β-myrcene (0.23%) and α-tujene (0.21%) were found to be the major constituents of the oil. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22742 Bangladesh J. Bot. 44 (1): 159-161, 2015 (March)

Journal ArticleDOI
TL;DR: The treatments where 50% N was substituted by FYM and crop residue in maize crop had the best reflection in enhancing the seed yield of gobhi sarson to the tune of 74 and 70% over the control and 16 and 13% over farmer’s practice.
Abstract: A pronounced residual effect of organic and inorganic fertilizers, applied in maize crop was observed on yields of maize-gobhi sarson cropping system. The experiment was conducted with 10 treatments of N, P, K, FYM, crop residue and zinc sulphate nutrients. The highest growth, yield and yield components of maize crop were recorded with 100% recommended fertilizer dose-RFD + ZnSO 4 20 kg/ha and the grain yield (2409 kg/ha) was about 101% higher over the control. In case of gobhi sarson, the highest seed yield (1081 kg/ha) was observed as a pronounced residual effect of 10 t/ha FYM in preceding maize crop; which was about 81% higher over the control. The treatments where 50% N was substituted by FYM and crop residue in maize crop had the best reflection in enhancing the seed yield of gobhi sarson to the tune of 74 and 70% over the control and 16 and 13% over farmer’s practice. The highest rain water use efficiency (RWUE) and heatuse efficiency (HUE) was recorded in treatment 100% RFD + ZnSO 4 20 kg/ha in maize crop and 10 t/ha FYM in gobhi sarson. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21666 Bangladesh J. Bot. 43 (2): 147-155, 2014 (September)

Journal ArticleDOI
TL;DR: It was observed that Ginkgo biloba extract affected in different degrees the various parameters of leaf anatomy of barley seedlings, and this difference was statistically important.
Abstract: Effects of Ginkgo biloba L. extract on the seed germination, seedling growth and leaf anatomy of barley under saline conditions were studied. In parallel with concentration rise, salt stress inhibited the seed germination and seedling growth of barley. The inhibitive effect of salt on the germination and coleoptile percentage was alleviated in varying degrees, and dramatically, by Ginkgo biloba application. However, it became ineffective in alleviating of salt inhibition on the radicle, coleoptile length, radicle number and fresh weight of barley seedlings. On the other hand, it was observed that Ginkgo biloba extract affected in different degrees the various parameters of leaf anatomy of barley seedlings, and this difference was statistically important. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22733 Bangladesh J. Bot. 44 (1): 117-123, 2015 (March)

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TL;DR: In this paper, it was revealed that rice plants absorb substantial amount of arsenic when grown in rice field soil containing 3.21 mg/kg arsenic and irrigated with contaminated groundwater from a shallow tube-well having 476 ± 3?g arsenic/l at Sonargaon, Bangladesh.
Abstract: Rice plants absorb substantial amount of arsenic when grown in rice field soil containing 3.21 mg/kg arsenic and irrigated with contaminated groundwater from a shallow tube-well having 476 ± 3 ?g arsenic/l at Sonargaon, Bangladesh. It is revealed that highest total arsenic accumulation occurred in roots (5.790 ± 0.337 mg/kg) followed by shoots (3.766 ± 0.370 mg/kg) and brown-rice grains (2.552 ± 0.507 mg/kg). The concentration of total arsenic in rice grains was beyond permissible limit (1.00 mg/kg) for human consumption. At the time of harvest 4.90 ± 1.11 - 8.27 ± 1.35 mg As/kg soil remained in the rice field soil. However, majority of the soil arsenic is washed out by rain and flood water leaving more than 3.00 mg As/kg soil after flood period which along with high level of As contaminated groundwater for irrigation, elevated the level (up to 8.27 ± 1.35 mg As/kg soil) beyond permissible limit of e.g. in USA it is 5 mg/kg soils for agriculture use. To keep the environment clean, surface water for irrigation has been suggested. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22728 Bangladesh J. Bot. 44 (1): 85-89, 2015 (March)

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TL;DR: Genetic and epigenetic changes (DNA methylation) in the mother plants of somatic hybrids and their regenerants and their cluster analyses based on the Jaccard’s similarity coefficient revealed 100% genetic similarity among the mother plant and their Regenerants.
Abstract: Genetic and epigenetic changes (DNA methylation) in the mother plants of somatic hybrids (1st cycle) and their regenerants (30th cycles sub-cultured) were analyzed using methylation-sensitive ISSR and RAPD markers. ISSR and RAPD profiles and their cluster analyses based on the Jaccard’s similarity coefficient revealed 100% genetic similarity among the mother plant and their regenerants. While for the epigenetic changes in the samples, the MS-ISSR markers detected DNA methylation (2.7%) in the regenerants compared to the mother plant (1%), whereas MS-RAPD markers detected a little methylation patterns in the regeneratns (0.6%) compared to the mother plants (0.4%). DOI: http://dx.doi.org/10.3329/bjb.v44i1.22722 Bangladesh J. Bot. 44 (1): 45-50, 2015 (March)

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TL;DR: In this article, a pot experiment was conducted in Kharif 2009 and 2010 to study the effect of potassium humate and chemical fertilizers on growth and yield attributes of rice (Oryza sativa L).
Abstract: A pot experiment was conducted in Kharif 2009 and 2010 to study the effect of potassium humate and chemical fertilizers on growth and yield attributes of rice (Oryza sativa L). Potassium humate was applied at the rate of 0, 5 and 10 mg/kg soil along with 100 and 75% recommended dose of fertilizers NPK (60, 30, 30 mg/kg) and 12.5 mg/kg zinc sulphate was also applied. Addition of 10 mg/kg PH along with 100% NPK fertilizers and 12.5 mg/kg zinc sulphate caused significant increase in plant height, number of tillers, panicle height, panicle length, test weight, straw yield and yield of rice as compared to 100 and 75% NPK alone. DOI: http://dx.doi.org/10.3329/bjb.v43i2.21671 Bangladesh J. Bot. 43 (2): 183-189, 2014 (September)