The effects of plant growth regulators on growth, yield, and phenolic profile of lentil plants

Nymphaea stellata Willd. (Syn. Nymphaea nouchali Burman f.) (Nymphaeaceae) is an important and well-known medicinal plant, widely used in the Ayurveda and Siddha systems of medicines for the treatment of diabetes, inflammation, liver disorders, urinary disorders, menorrhagia, blenorrhagia, menstruation problem, as an aphrodisiac, and as a bitter tonic. There seems to be an agreement between the traditional use and experimental observations, such as, hepatoprotective, anti-inflammatory, and particularly antidiabetic activity. Nymphayol, a steroid isolated from the flowers has been scientifically proved to be responsible for the traditionally claimed antidiabetic activity; it reverses the damaged endocrine tissue and stimulates secretion of insulin in the β-cells. However, taking into account the magnitude of its traditional uses, the studies conducted are still negligible. This review is an attempt to provide the pharmaceutical prospective of Nymphaea stellata.

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A comprehensive review on Nymphaea stellata: A traditionally used bitter.

Question: How resilient is the seed bank of an invaded dune system? Is that resilience dependent on duration of invasion? How does the accumulated litter layer contribute to the soil seed bank?



Location: Coastal sand dunes invaded by Acacia longifolia, Portugal.



Methods: Seedling emergence was used to quantify and compare soil seed banks in long-invaded, recently invaded and non-invaded areas. Changes in seed banks were also compared with areas where A. longifolia and the litter layer were removed.



Results: Species richness, seedling density and diversity were higher in non-invaded and recently-invaded areas than in long-invaded areas. Although there was an apparent similarity between non-invaded and recently-invaded areas, analyses of species traits revealed differences. Non-invaded areas had a wider array of traits. Exotic/invasive species dominated invaded seed banks while native species dominated non-invaded seed banks. Life forms, growth forms, longevity and dispersal mode showed differences between areas, with cleared plots of long-invaded areas being apparently the most similar to non-invaded plots. Acacia longifolia seeds were most abundant in long-invaded areas, particularly where the litter layer remained. Removal of A. longifolia plus the litter had little effect on the seed bank composition of recently-invaded areas but resulted in noticeable changes in seed banks of long-invaded areas.



Conclusions: Long-invaded areas are less resilient and show a higher reinvasion potential, despite severe alteration of the seed banks of both areas. Seed bank studies can be a useful tool to guide management, but can give misleading results when invasion periods are protracted.

The potential role of seed banks in the recovery of dune ecosystems after removal of invasive plant species.

Nymphaeales are the most species-rich lineage of the earliest diverging angiosperms known as the ANA grade (Amborellales, Nymphaeales, Austrobaileyales), and they have received considerable attenti...

Insights into the dynamics of genome size and chromosome evolution in the early diverging angiosperm lineage Nymphaeales (water lilies).

A review of strategies, methods and technologies to reduce non-beneficial consumptive water use on farms considering the FAO56 methods

Onion bulbs of different sizes (20g, 15g and l0 g) were planted at different dates viz, 30 October and 15 and 30 November to observe their effects on growth, bulb and seed yield of onion The mother bulb size and planting dates showed significant influence on growth, bulb and seed yield of onion The large mother bulb and early planting were favourable for getting higher bulb and seed yields The treatment combinations of large mother bulb (20 g) and 30 October planting time gave the highest bulb (1752 t1ha) and seed (40280 kg1ha) yield Â  Key words: Onion, mother bulb size, planting time, growth, yield doi: 103329/bjarv33i42285 Bangladesh J Agril Res 33(4) : 531-537, December 2008 Â

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Effect of mother bulb size and planting time on growth, bulb and seed yield of onion

Nuclear and chromosome characteristics of seven varieties of Colocasia esculenta were studied. Interphase chromosome value was found to range from 2119.85 (cytotype-3) to 5346.12 (cytotype-7). Heterochromatin values varied from 23.17 (cytotype-2) to 44.52% (cytotypt-6) in meristematic cells. Karyotype studies revealed that somatic chromosome number was 28 in cytotype-1, 2, 5, 6 and 7; 42 in cytotype-3 and 21 in cytotype-4. The longest chromosome (5.54 μm) was observed in cytotyopt-2 and shortest (1.3 μm) in cytotype-3 and 6. Key words: Karyotype, Nuclear phenotype, Colocasia esculenta. DOI:10.3329/jbs.v16i0.3735  J. bio-sci. 16: 15-18, 2008

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Karyotype Analysis of Seven Varieties of Taro Colocasia esculenta (L.) Schott. from Bangladesh

An experiment was conducted with different concentrations of plant growth regulators to evaluate their effects on the growth and yield of late planted Mukhi Kachu ( Colocsis esculenta ). Different treatments of uniconazole (growth retardant showed significant influence on plant height, petiole length, number of leases per plant, weight of leaf and weight of petioles per hill, number and weight of corms and cormels per hill and yield of cormel. GA 3 , (growth promoter) enhanced foliage growth, flowering, and cormel development Key Words: Growth regulators; Mukhi Kachu ( Colocusis esculenta ); yield. DOI: 10.3329/bjar.v34i2.5794 Bangladesh J. Agril. Res. 34(2): 233-238, June 2009

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Effect of plant growth regulators on growth and yield of Mukhi Kachu

Context: In order to control weeds many chemicals are being used. It is well known that the chromosomal constitution of the cells may be changed as a result of herbicide treatment. Objectives: This investigation was made to study the cytological effects of herbicides on somatic and germ cells of hexaploid wheat. Materials and Methods: Two herbicides namely, Fielder and Ronstar were used with three different concentrations along with control. Treatment duration was 12 hours for each of the concentrations. Seeds of hexaploid wheat were treated and the roots emerged from them were studied for mitotic study. A part of the treated seeds were sown in earthen pots and pollen mother cells along with pollen grain were studied from the plants aroused from these treated seeds. Results: Mitotic index were high as well as low in most of the treatments compared to that of control but did not show any clear relationship based on increasing or decreasing of the doses of herbicides. Interphase chromosome volume was found to decrease in case of Fielder however, increased in case of Ronstar with increasing the concentration of herbicides. Percentage of pollen sterility was found to increase with increasing the concentration of both herbicides. Main chromosomal irregularities were chromosome fragments, bridges, laggards, single and multiple chromatid bridges etc. Conclusion: Generally it is reported that any chemical might have effect on the plant cells. Mainly investigations have evidenced that the chromosomal anomalies caused by radiation and chemical mutagen is very much common matter now. The herbicides used in the present study showed similar type of radiomimetic effect in the plant cells. Therefore it may be suggested that herbicides should be used in agricultural field maintaining their proper concentration. Key words: Herbicides; Cytological effect; Wheat. DOI: 10.3329/jbs.v17i0.7095 J. bio-sci. 17: 21-26, 2009

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Cytological Effect of Herbicides on Hexaploid Wheat ( Triticum aestivum L.)

Post-irradiation ageing effect on seed germinability and different morphological characters of Crotalaria saltiana were studied in the year of 2006. Germination percentage of Crotalaria saltiana seeds treated with different doses of gamma rays, aged for 32 years in moisture free condition showed remarkable variation. Plants grown from the treated seeds of all the doses showed diversity among themselves regarding their morphological characters. Such as plant height was found to reduce in lower doses and this character showed no such consistent result. Leaf irregularities such as, invaginated margin, inverted margin with blunt apex, leaf with bifurcated apex, small size and dented margin, etc. were recorded. Key words: Post-irradiation ageing effect, Morphological characters, Crotalaria saltiana . DOI:10.3329/jbs.v16i0.3747 J. bio-sci. 16: 89-93, 2008

/pdf/post-irradiation-ageing-effect-on-morphological-characters-1e3wtzflo3.pdf

MM Ud-Deen

Papers

Effect of mother bulb size and planting time on growth, bulb and seed yield of onion

Karyotype Analysis of Seven Varieties of Taro Colocasia esculenta (L.) Schott. from Bangladesh

Effect of plant growth regulators on growth and yield of Mukhi Kachu

Cytological Effect of Herbicides on Hexaploid Wheat ( Triticum aestivum L.)

Post-Irradiation Ageing Effect on Morphological Characters of Crotalaria saltiana