Showing papers on "Sativum published in 2011"

Action of Coriandrum sativum L. Essential Oil upon Oral Candida albicans Biofilm Formation

Abstract: The efficacy of extracts and essential oils from Allium tuberosum, Coriandrum sativum, Cymbopogon martini, Cymbopogon winterianus, and Santolina chamaecyparissus was evaluated against Candida spp. isolates from the oral cavity of patients with periodontal disease. The most active oil was fractionated and tested against C. albicans biofilm formation. The oils were obtained by water-distillation and the extracts were prepared with macerated dried plant material. The Minimal Inhibitory Concentration—MIC was determined by the microdilution method. Chemical characterization of oil constituents was performed using Gas Chromatography and Mass Spectrometry (GC-MS). C. sativum activity oil upon cell and biofilm morphology was evaluated by Scanning Electron Microscopy (SEM). The best activities against planktonic Candida spp. were observed for the essential oil and the grouped F8–10 fractions from C. sativum. The crude oil also affected the biofilm formation in C. albicans causing a decrease in the biofilm growth. Chemical analysis of the F8–10 fractions detected as major active compounds, 2-hexen-1-ol, 3-hexen-1-ol and cyclodecane. Standards of these compounds tested grouped provided a stronger activity than the oil suggesting a synergistic action from the major oil constituents. The activity of C. sativum oil demonstrates its potential for a new natural antifungal formulation.

Physicochemical aspects of hydrocolloid extract from the seeds of Lepidium sativum

Abstract: Summary Acid equivalent weight, intrinsic viscosity and FT-IR measurements have demonstrated a polyelectrolyte nature to Lepidium sativum seed extract. The polyelectrolyte nature relates to the carboxyl groups carried by galacturonic acid and glucuronic acid unit. The seed extract exhibited pronounced shear thinning in steady shear rheology and a weak gel type behaviour in dynamic rheology when the concentration is high i.e. > 1%. Such behaviour suggests the ability of L. sativum seed extract to structure a liquid, thus showing the possibility of applying it as a novel thickener and stabiliser in aqueous systems. The characteristic could be due to a strong tendency of molecular association of L. sativum seed extract as found for high M/G ratio galactomannans, and possibly also the enhanced macromolecular entanglement due to relatively rigid chain conformation. Temperature dependence study showed that the rheological properties of L. sativum structured solution is stable against temperature variation.

Reduction of heavy metal load in food chain: technology assessment

Abstract: Industrialization and urbanization activities lead to extensive environmental problems and one of the most challenging problems is heavy metal contamination. Heavy metal is responsible for causing adverse effect on human health through food chain contamination. To minimize the effect, different methods are being used for decreasing heavy metal load into the food chain. Most of the traditional methods are either extremely costly or it simply isolate the contaminated site. A promising, relatively new technology for removal of heavy metal from contaminated sites is phytoremediation. There are numerous crops such as sunflower (Helianthus annus), maize (Zea mays), mustard (Brassica compestris), barley (Hordeum vulgare), beet (Beta vulgaris), bitter Gourd (Momordica charantia), brinjal (Solanum melongena), cauliflower (Brassica oleracea var. botrytis), chilli (Capsicum annum), coriander (Coriandrum sativum), fenugreek (Trigonella foenum-graecum), garlic (Alium sativum), ivy gourd (Coccinia indica), lufa (Luffa acutangula), lady’s finger (Abelmoschus esculentus), mint (Mentha piperata), radish (Raphanus sativus), spinach (Spinacia oleracea), tomato (Lycopersicom esculentum), and white gourd (Lagenaria vulgaris) used for remediation of heavy metal. The efficiency of the phytoremediation crops depends upon their biomass production and ability of metal accumulation in their harvestable organs. In addition to this there are some biotechnological approaches for enhancing the property of hyper accumulator plant for metal remediation. Various potential remediation techniques are available that can be used to reduce the heavy metal contamination. Research related to relatively new technology should be promoted and emphasized and expanded in developing countries where heavy metal pollution has already touched alarming level. In the above context present review deals with different approaches to reduce the availability of heavy metal from soil to plants.

The effect of garlic (Allium sativum) on growth and immune responses of hybrid tilapia (Oreochromis niloticus x Oreochromis aureus)

Abstract: Garlic (Allium sativum) was incorporated into diets (0 (control group), 0.5 and 1 g/kg (test groups)) of juvenile hybrid tilapia, Oreochromis niloticus x O. aureus. The fish initial weight was 25.5 ± 1.0 g (mean ± SD) with no significant size difference among the treatments. Innate immune response responses were evaluated for 2 to 4 weeks. Total leucocyte count, respiratory burst, phagocytic activity, phagocytic index and lysozyme activity were enhanced in garlic 0.5 g/kg treated groups compared to the control group after 4 weeks. Fish fed with garlic supplemented diets at 0.5 g/kg showed decreased on weight gain at 2 and 4 weeks as compared to those fed with control diet. Key words: Hybrid tilapia, Oreochromis niloticus x O. aureus, juvenile, garlic, Allium sativum, innate immune response.

Anti-anxiety activity of Coriandrum sativum assessed using different experimental anxiety models.

Abstract: Interest in alternative medicine and plant-derived medications that affect the "mind" is growing. The aim of present study was to explore the anti-anxiety activity of hydroalcoholic extract of Coriandrum sativum (Linn.) using different animal models (elevated plus maze, open field test, light and dark test and social interaction test) of anxiety in mice. Diazepam (0.5 mg/kg) was used as the standard and dose of hydroalcoholic extract of C. sativum fruit (50, 100 and 200 mg/kg) was selected as per OECD guidelines. Results suggested that extract of C. sativum at 100 and 200 mg/kg dose produced anti-anxiety effects almost similar to diazepam, and at 50 mg/kg dose did not produce anti-anxiety activity on any of the paradigm used. Further studies are needed to identify the anxiolytic mechanism(s) and the phytoconstituents responsible for the observed central effects of the hydroalcoholic extract of C. sativum.

Pharmacological screening of Coriandrum sativum Linn. for hepatoprotective activity.

Abstract: Objective : Coriandrum sativum (Linn), a glabrous, aromatic, herbaceous annual plant, is well known for its use in jaundice Essential oil, flavonoids, fatty acids, and sterols have been isolated from different parts of C sativum The plant has a very effective antioxidant profile showing 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, lipoxygenase inhibition, phospholipid peroxidation inhibition, iron chelating activity, hydroxyl radical scavenging activity, superoxide dismutation, glutathione reduction and antilipid peroxidation due to its high total phenolic content with the presence of constituents like pyrogallol, caffeic acid, glycitin, etc Materials and Methods : This study was aimed at investigating the hepatoprotective activity of C sativum against carbon tetrachloride (CCl4), with estimation of serum serum glutamyl oxaloacetic acid transaminase (SGOT), serum glutamyl pyruvate transaminase (SGPT), alkaine phosphatase (ALP) and bilirubin, and with liver histopathology Results : Ethanolic extract was found to be rich in alkaloids, phenolic compounds and flavonoids, and high performance liquid chromatography (HPLC) fingerprinting showed the presence of iso-quercetin and quercetin C sativum signifies hepatoprotection by reducing the liver weight, activities of SGOT, SGPT, and ALP, and direct bilirubin of CCl 4 intoxicated animals Administration of C sativum extract at 300 mg/kg dose resulted in disappearance of fatty deposit, ballooning degeneration and necrosis, indicating antihepatotoxic activity Conclusion : The results of this study have led to the conclusion that ethanolic extract of C sativum possesses hepatoprotective activity which may be due to the antioxidant potential of phenolic compounds

Bioactivity of Anacardium occidentale (L) and Allium sativum (L) Powders and Oils Extracts against Cowpea Bruchid, Callosobruchus maculatus (Fab.) [Coleoptera: Chrysomelidae]

Abstract: The powders and oils extracts of Anacardium occidentale (L.) seeds and Allium sativum (L.) bulbs were tested as contact insecticides against the cowpea bruchid, Callosobruchus maculatus (Fab.) in cowpea seeds. The powders were incorporated at rates 1, 2.5 and 5/20g of cowpea seeds and acetone extracts of the plants were also applied at 0.5, 1 and 1.5ml per 20g of cowpea seeds to assess contact mortality of adult insect, oviposition, adult emergence and damage assessment. The results obtained showed that at 72 hours; 1, 2.5 and 5/20g of cowpea seeds evoked 63.3, 80 and 100% adult mortality of the cowpea bruchid while the corresponding results for A. sativum were 60.7, 73.3 and 100% mortality respectively. All concentration of acetone extracts that were used evoked 100% mortality of C. maculatus after 72 hours of post treatment. Complete protection of seeds and complete inhibition of adult emergence in both powders and extracts of A. occidentale and A. sativum were achieved. The results obtained from this research revealed that powders and extracts of A. occidentale seeds and A. sativum bulbs were effective in controlling cowpea bruchid, C. maculatus in stored cowpea seeds.

Effect of Terminalia chebula and Allium sativum on in vivo methane emission by sheep.

Abstract: Summary A study was conducted to evaluate some plant parts (already tested for their antimethanogenic activity in in vitro gas production test in the authors’ laboratory) as feed additive to combat methane emission from sheep. Sixteen male sheep with average body weight of 29.96 ± 1.69 kg (22 months of age) were divided into four groups in a randomized block design. The animals were fed on a diet containing forage to concentrate ratio of 1:1. The concentrate fraction composed (in parts) of maize grain, 32; wheat bran, 45; deoiled soybean meal, 20; mineral mixture, 2 and common salt, 1. The four treatments were control (without additive), seed pulp of Terminalia chebula (Harad), bulb of Allium sativum (Garlic) and a mixture (Mix) of the latter two in equal proportions at the rate of 1% of dry matter (DM) intake. There was no effect on DM intake due to the inclusion of these feed additives. The digestibilities of DM and organic matter tended to be higher (p < 0.1) in the groups with T. chebula and A. sativum, whereas, neutral detergent fibre (NDF), acid detergent fibre (ADF) and cellulose digestibilities were higher (p < 0.05) in all the three experimental groups compared with control. The nitrogen balance and plane of nutrition were not affected by inclusion of any of the feed additives. Methane emission (L/kg digested DM intake) as estimated by open circuit respiration chamber and methane energy loss as per cent of digestible energy intake tended to be lower in T. chebula (p = 0.09) and Mix (p = 0.08) groups compared with control. The data indicated that T. chebula showed antimethanogenic activity, whereas both T. chebula and A. sativum improved nutrient digestibility. Therefore, these two plants appear to be suitable candidates for use as feed additive to mitigate methane emission and to improve nutrient utilization by sheep.

Identification of common genomic regions controlling resistance to Mycosphaerella pinodes, earliness and architectural traits in different pea genetic backgrounds

Abstract: In a previous study a genetic map had been developed using a RIL population derived from a cross between the Pisum sativum ssp. syriacum accession P665 and the P. sativum ssp. sativum cv. Messire. This population segregated for several agricultural important traits and was successfully used to identify QTLs (Quantitative Trait Loci) controlling resistance to Mycosphaerella pinodes and Orobanche crenata, earliness, root length and aerial biomass. However, this map contained only a few markers in common with the international pea consensus map, hampering comparison with other pea maps. The objective of this study was to incorporate a set of common transferable and reproducible markers into the P665 × Messire map to favour comparative mapping and QTL validation. Seventy-eight out of the 248 SSRs assayed resulted polymorphic in the parental lines. Thirty-eight of them, uniformly distributed all over the genome, were genotyped in the whole population and included in the map. This SSR enriched map allowed identification of six new QTLs (three for resistance to M. pinodes, two for resistance to broomrape and one for root length). Inclusion of the SSRs confirmed the homology of some of the QTLs identified in the population P665 × Messire with other QTLs associated with related traits in different pea genetic backgrounds.

Phenolic content and antioxidant activity of different extracts from ocimum basilicum, apium graveolens and lepidium sativum seeds

Abstract: The antioxidative properties and total phenolic contents of methanol, ethanol and water extracts from Ocimum basilicum, Apium graveolens and Lepidium sativum seeds were investigated and the results were compared with standards. The methanol extracts of the seeds had significantly higher (P < 0.05) superoxide radical scavenging activity with the concentration for 50% inhibition (IC50) value of 98.73 µg/mL for O. basilicum, 121.57 µg/mL for A. graveolens and 166.16 µg/mL for L. sativum. The results indicated that all the seed extracts showed excellent H2O2 scavenging activities. IC50 values for H2O2 scavenging activity by methanol extract of O. basilicum, A. graveolens, L. sativum and butylated hydroxyanisole were found to be as 49.9, 52.3, 65.2 and 49.6 µg/mL, respectively. O. basilicum methanol extract had significantly (P < 0.05) higher 1,1-diphenyl-2-picryl-hydrazyl scavenging effect than the other two seeds. The methanol extracts of three seeds were better in Fe+2 chelating activity, reducing power and higher in the content of total phenol as compared with ethanol and water extracts. PRACTICAL APPLICATIONS Recent epidemiological studies have strongly suggested that consumption of certain plant materials such as seeds, leaves, fruits and roots may reduce the risk of chronic diseases related to oxidative stress on account of their antioxidant activity and promote general health benefits. In this study, all seeds extracts exhibited good antioxidant activity (78.3–96.9%) at concentration 500 µg/mL. Total phenolic content in the seed extracts ranged from 51 to 92 mg GAE/100 g extract. In addition, there was a statistically significant correlation between the amount of phenolic compounds and antioxidant activity (R2 = 0.9058, P < 0.05) in all the seed extracts. Therefore, O. basilicum, A. greveolens and L. sativum seed extracts have the potential to be developed into dietary supplements and nutraceuticals.

Phytochemicals screening and antimicrobial activities of selected medicinal plants of Khyberpakhtunkhwa Pakistan

Abstract: The study was carried out to assess the phytochemical and antimicrobial bioassay of five medicinal plants, Lepidium sativum, Nerium oleander, Ranunculus repens, Tecoma stans and Urtica dioca. These plants are traditionally used as medicine in the Northwest Pakistan, therefore it is necessary to identify and estimate their alkaloid, flavonoid , saponin, phenol and tannin contents. Phytochemical inveigation of plant samples determines that alkaloid (63.6%) and flavonoid (0.91%) were highest in N. oleander, saponin (11%) and phenol (0.031) in T. stans, tannin (0.61%) in L. sativum , All five species showed no significant antimicrobial activities.

Chemical nutrient analysis of different composts (Vermicompost and Pitcompost) and their effect on the growth of a vegetative crop Pisum sativum

Abstract: The importance of composts as a source of humus and nutrients to increase the fertility of soil and growth of plant has been well recognized in the present study. Different composts (Vermicompost and Pitcompost) and Garden soil (Control) were taken first for chemical analysis and then to find the effect of these composts on the growth of a vegetative crop ‘Pisum sativum’. It was found that the vermicompost was rich in nutrients like Potassium, Nitrate, Sodium, Calcium, Magnesium, and Chloride and have the potential for improving plant growth than pit compost and garden soil (control). The optimal plant growth in our study conducted for a period of one month was found in pots containing vermicompost. The study also showed distinct differences between vermicompost, pitcompost and garden soil (control) in terms of their nutrient content and their effect on plant growth.

Seed protein amino acid composition of important local grain legumes Lupinus angustifolius L., Lupinus luteus L., Pisum sativum L. and Vicia faba L.

Abstract: Grain legumes are regarded as highly valuable protein source for human and animal nutrition. Legume protein quality is mainly limited by the amino acids (AAs) tryptophan and sulphur AA. Organic farming in particular requires high seed protein quality for livestock feeding, as chemically produced AAs must not be feeded. Breeding attempts to increase contents of limiting AA are required. In the present survey, the AA content of 107 cultivars of important European grain legume species (Lupinus angustifolius, Lupinus luteus, Pisum sativum and Vicia faba) was analysed. AA contents were related to the requirements of growing pigs and human nutrition. Feed quality could be enhanced by choice of high quality varieties according to ideal protein concepts. For example for sulphur, AA feed quality for pigs could be increased by up to 22% (e.g. for L. angustifolius: ideal protein = 100, sample mean = 59.7, sample maximum = 72.7). Regarding livestock nutrition, ranges of limiting AA never reached the qualities reported for soybean seeds. However, an inclusion of high quality legume lines would reduce the need for other high quality components in feed compositions.

Phytopharmacological Properties of Coriander Sativum as a Potential Medicinal Tree: An Overview

Abstract: Coriandrum Sativum family Umbelliferae is highly reputed ayurvedic medicinal tree commonly known as the Dhanyaka. It is small sized tree growing throughout India, Italy. Netherlands, Central and Eastern Europe, China and Bangladesh. The different parts of this plant contain monoterpenes, α-pinene, limpnene, γ-terpinene, p-cymene, borneol, citronellol, camphor, geraniol, coriandrin, dihydrocoriandrin, coriandronsA-E, flavonoids and essential oils. Various parts of this plant such as seed, leaves, flower and fruit, possess Diuretic, Antioxidant Activity, Ant-diabetic Anti-convulsant activity, Sedative Hypnotic Activity, Anti-microbial Activity, Anti mutagenic, Anthelmintic activity. Various phytopharmacological evaluations have been reported in this literature for the important potential of the Coriandrum sativum.

Insecticidal activity and fungitoxicity of plant extracts and components of horseradish (Armoracia rusticana) and garlic (Allium sativum).

Abstract: To avoid environmental pollution and health problems caused by the use of traditional synthetic pesticides, there is a trend to search for naturally occurring toxicants from plants. Among the compounds discussed for anti-fungal and insecticidal activity, the natural extracts from garlic and horseradish have attracted considerable attention. The objective of this study is to determine the insecticidal and anti-fungal activity of Armoracia rusticana and Allium sativum L. extracts against larvae of Aedes albopictus (Skuse) and some pathogenic fungi. For the insecticidal test, horseradish and garlic extracts were prepared from fresh plants (cultivated in Emilia Romagna region) in a solution of ethanol 80 % and the two different solutions were used at different concentrations (for the determination of the lethal dose) against the fourth instar mosquito's larvae. The fungicidal test was carried out by the agar plates technique using garlic and horseradish extracts in a 10 % ethanol solution against the following organisms: Sclerotium rolfsii Sacc., Trichoderma longibrachiatum, Botrytis cinerea Pers., Fusarium oxysporum Schlecht. and Fusarium culmorum (Wm. G. Sm.) Sacc. The first results demonstrated that the horseradish ethanol extracts present only a fungistatic activity against Sclerotium rolfsii Sacc., Fusarium oxysporum Schlecht. and F. culmorum (Wm.G. Sm) Sacc. while garlic extracts at the same concentration provided a good fungicidal activity above all against Botrytis cinerea Pers. and S. rolfsii. A. rusticana and A. sativum preparations showed also an interesting and significant insecticidal activity against larvae of A. albopictus, even if horseradish presented a higher efficacy (LC₅₀ value of 2.34 g/L), approximately two times higher than garlic one (LC₅₀ value of 4.48 g/L).

Molecular evidence of genetic diversity changes in pea (Pisum sativum L.) germplasm after long-term maintenance

Abstract: Maintaining germplasm genetic integrity is a key objective of long-term ex situ conservation Periodic regeneration, performed on limited plots with small number of individuals, increases the risk of genetic drift and genetic diversity changes In this study, six accessions of white flowered, dry seed pea varieties (Pisum sativum L subsp sativum var sativum): Bohatýr, Klatovský zelený, Hanak, Moravský hrotovický krajový, Raman and Viktoria-75 and four accessions of colour flowered, fodder pea (P sativum subsp sativum var arvense (L) Poiret: Arvika, Ceský banan, Moravska krajova and Nike, representing Czechoslovak varieties and landraces, bred over the last 40–80 years, were analyzed using ten microsatellite locus specific markers Each accession was represented by 20 individual seeds of two temporally different samples, spanning the period of 20 or 40 years Together with intra-accession variation (except of cv Hanak), evidence of genetic changes, eg differences in allele frequencies as well as genetic composition of sample, was detected in six out of ten accessions (Arvika, Bohatýr, Ceský banan, Moravský hrotovický krajový, Moravska krajova and Raman) Evidence of genetic erosion was found in three accessions (Ceský banan, Moravský hrotovický krajový and Raman), while in another three (Arvika, Bohatýr and Moravska krajova) the level of diversity was found to have increased Moreover in three samples of Bohatýr (2004) and Klatovský zelený (1963 and 2004), low levels of heterozygosity was detected These results demonstrate that in pea, a self-pollinating and highly homozygous plant, the danger of the loss of genetic integrity exists These findings are significant for long-term ex situ germplasm management

In vitro Antimicrobial Assessment of Lepidium sativum L. Seeds Extracts

Abstract: The antimicrobial activity of the petroleum ether, methanol and water extracts of Lepidium sativum seed extracts against six opportunistic pathogens namely Staphylococcus aureus, Escherichia coli, Klebsiella pneumonae, Proteus vulgaris, Pseudomonas aeruginosa and one fungus Candida albicans was assessed using the concentrations of 2.5, 5 and 10%. The antimicrobial activity of plant seeds extracts were compared with that of Gentamicin or Ketoconzol, as reference antibiotics. The petroleum ether extract of Lepidium sativum seeds in different concentrations (2.5-5-10%) were found to be active antimicrobials against all the test microorganisms with a strong antifungal activity at the concentration 2.5 and 10%. At the concentration of 5%, the methanolic extract of this plant had no activity against Candida albicans. Staphylococcus aureus and Candida albicans were resistant to 2.5 and 5% water extracts, whereas the latter was also resistant to 5% methanolic extract. The antimicrobial activity of Gentamicin and Ketoconzol against the same test microorganisms was compared with that of the extracts of L. sativum seeds.

Genetic background and agronomic value of leaf types in pea (Pisum sativum).

Abstract: Pea (Pisum sativum L.) has a compound leaf like many other legume species. The 'semi-leafless' pea (afaf tltl), with all leaflets transformed into tendrils, is considered one of the most important achievements in pea breeding, due to a significantly enhanced standing ability and equally efficient dry matter production in comparison to normal-leafed genotypes (AFAF TLTL). 'Semi-leafless' cultivars provide high and stable grain yield and are dominant in the modern dry pea production worldwide. There are also 'semi-leafless' cultivars that are autumn-sown and those for forage production. The genotypes with all tendrils transformed into leaflets (afaf tltl), called 'acacia' or 'tendril-less', are extremely prone to lodging and may have importance in breeding for forage production. Little is known about the potential agronomic value of 'acacia-tendril-less' (afaf tltl) genotypes.

Comparison of the α-amylase inhibitor-1 from common bean (Phaseolus vulgaris) varieties and transgenic expression in other legumes--post-translational modifications and immunogenicity.

Abstract: The seeds of peas (Pisum sativum) and chickpeas (Cicer arietinum) expressing a gene for α-amylase inhibitor-1 (αAI) from the common bean (Phaseolus vulgaris) are protected from damage by old world ...

Genetic diversity among Spanish pea (Pisum sativum L.) landraces, pea cultivars and the World Pisum sp. core collection assessed by retrotransposon-based insertion polymorphisms (RBIPs)

Abstract: A total of 122 accessions of different wild and cultivated Pisum sp. were analysed using retrotransposon-based insertion polymorphisms (RBIP) markers. The Pisum materials included wild and cultivated (landraces and cultivars) materials from the World core collection of the John Innes Centre (JI) representing all generally recognized Pisum taxa, landraces materials from the Spanish core collection, and commercial pea cultivars largely sown in Spain. The overall polymorphism detected by RBIP marker was high and all accessions, except two pairs, could be distinguished by their marker pattern. Principal component and phylogenetic analyses clearly discriminated P. fulvum and P. abyssinicum samples from both each other and P. sativum , while P. elatius and P. humile samples were scattered among the other taxa clusters, supporting the existence of three well defined taxa in the genus Pisum ( P. abyssinicum , P. fulvum and P. sativum ). These results also suggest that the Spanish pea core collection of landraces maintains a relatively high variability which is only partially represented in cultivars generally sown in Spain. Thus, Spanish landraces are still a source of genetic variability for breeding new pea cultivars.

Genetic control and identification of QTLs associated with visual quality traits of field pea (Pisum sativum L.)

Abstract: Visual quality of field pea (Pisum sativum L.) is one of the most important determinants of the market value of the harvested crop. Seed coat color, seed shape, and seed dimpling are the major components of visual seed quality of field pea and are considered as important breeding objectives. The objectives of this research were to study the genetics and to identify quantitative trait loci (QTLs) associated with seed coat color, seed shape, and seed dimpling of green and yellow field peas. Two recombinant inbred line populations (RILs) consisting of 120 and 90 lines of F5-derived F7 (F5:7) yellow pea (P. sativum ‘Alfetta’ × P. sativum ‘CDC Bronco’) and green pea (P. sativum ‘Orb’ × P. sativum ‘CDC Striker’), respectively, were evaluated over two years at two locations in Saskatchewan, Canada. Quantitative inheritance with polygenic control and transgressive segregation were observed for all visual quality traits studied. All 90 RILs of the green pea population and 92 selected RILs from the yellow pea popul...

INDUCTION OF RESISTANCE IN CHICKPEA (Cicer arietinum L.) AGAINST Ascochyta rabiei BY APPLYING CHEMICALS AND PLANT EXTRACTS

Abstract: Since new fungicides are scarce in the market and because of environmental problems, researchers are now emphasizing other alternatives, such as the genetic potential of plants, resistance against pathogens, and the use of biotic and abiotic agents to develop induced or acquired resistance. We investigated the role of resistance-inducing substances (chemicals and plant extracts) in three chickpea cvs. C-44, Pb-91, and Bittle-98 in field experiments against Ascochyta blight disease. These cultivars were selected on the basis of better yield potential shown in previous experiments. Aqueous solution of salicylic acid (SA) at 0.5, 1.0, and 1.5 mM; acibenzolar-S-methyl (ASM) at 0.4, 0.8, and 1.2 mM; and KOH at 25, 50, and 75 mM were applied, whereas Azadirachta indica A. Juss., Datura metel L., and Allium sativum L. plant extracts were applied at 5, 10, and 15%. Disease reduction data was recorded at different intervals from 4 to 14 d after being induced and inoculated with the pathogen. Overall results revealed that significant disease reduction (79.3%) was provided by ASM in the cv. C-44 at 1.2 mM compared with SA, whereas the least significant was KOH. Maximum disease reduction (43.5%) against disease in the plant extracts was observed by applying A. indica leaf extract, but D. metel and A. sativum extracts were not effective. Our findings suggest that enhancing resistance before infecting chickpea plants could be an innovative control method for Ascochyta blight of chickpea.

Effect of host plants on antioxidant system of pea aphid Acyrthosiphon pisum

Abstract: The effect of some species of family Fabaceae plants on the non-enzymatic and enzymatic antioxidants of the pea aphid, Acyrthosiphon pisum (Harris) has been studied. The highest concentration of ascorbate was noted for aphids fed on Pisum sativum L.. The content of another non-enzymatic antioxidant, GSH, was the highest within the tissues of the morphs fed on Vicia faba L.. The aphids reared on this host plant had 3-fold higher activity of the antioxidant enzymes than the ones fed on Pisum sativum L. and Vicia sativa L.. The influences of the host plants on antioxidant defence mechanisms within the pea aphid species are discussed.