scholarly journals Effect of Water Deficit at different Stages of Development on Forage Yield of Cowpea (Vigna unguiculata L.) Genotypes

2021 ◽  
Vol 10 (1) ◽  
pp. 31-48
Author(s):  
Salah Ahmed Okasha Magdy Maher Mosad
Keyword(s):  
Water Deficit ◽  
Vigna Unguiculata ◽  
Forage Yield ◽  
Stages Of Development ◽  
Effect Of Water

scholarly journals Effect of water deficit at different stages of development on the yield components of cowpea (Vigna unguiculata L. Walp) genotypes

2018 ◽  
Vol 17 (9) ◽  
pp. 279-287 ◽  
Author(s):  
DAOUDA Abdoul Karim TOUDOU ◽  
Sanoussi ATTA ◽  
Maman Maarouhi INOUSSA ◽  
Falalou HAMIDOU ◽  
Yacoubou BAKASSO
Keyword(s):  
Water Deficit ◽  
Vigna Unguiculata ◽  
Yield Components ◽  
Stages Of Development ◽  
Effect Of Water

scholarly journals EFFECT OF WATER DEFICIT ON YIELD COMPONENTS OF SOUTHERNPEA [VIGNA UNGUICULATA (L.) WALP.]

HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 747e-748
Author(s):  
Timon K. Moi ◽  
Craig R. Andersen
Keyword(s):  
Stomatal Conductance ◽  
Water Deficit ◽  
Vigna Unguiculata ◽  
Critical Length ◽  
Vegetative Stage ◽  
Water Deficit Stress ◽  
Yield Reduction ◽  
Plant Responses ◽  
Effect Of Water ◽  
General Decline

Southernpea [Vigna unguiculata (L.) Walp.] is the main source of protein in humid and subhumid tropics, but production is limited by low and erratic rainfalls. This potential calls for greater management of water deficit stress through timely irrigation and greater understanding of crop response to adverse environmental conditions. The objectives of this study were to: identify growth stages of southernpea sensitive to water deficit, estimate critical length of water deficit detrimental to southernpea during each stage, and describe physiological and morphological responses of southernpea to water deficit stress. In this study, two southernpea cultivars, `AR.91-285' and `Coronet', were used to examine the effect of water deficit stress on seed yield, number of pods per plant, number of seeds per pod, pod length, and hundred seed weight during three stages of growth. The greenhouse and field results for these parameters indicated that the vegetative stage was the least sensitive to water deficit stress, followed by podfilling and flowering stages. However, pod filling stage was found to be less sensitive than vegetative stage beyond 21 days of stress. The critical length of water deficit causing yield reduction appeared to be 7 days for flowering and pod filling stages and 14 days for vegetative stage. `Coronet' was less sensitive to water deficit stress than `AR.91-285'. Reduced plant size, change in leaf color, and wilting were plant responses during the vegetative stage. Leaf senescence, flower abscision, fewer and shorter pods, and early pod maturity were observed plant responses during the reproductive stages. We observed a general decline in stomatal conductance and net CO2 assimilation with increasing days of stress. After 7 and 14 days of water-deficit-stress vegetative growth, stomatal conductance and net CO2 assimilation returned to the levels of control.

scholarly journals Effect of Water Deficit at Different Growth Phases of Peanut. II. Response to Drought During Preflowering Phase

1988 ◽  
Vol 80 (3) ◽  
pp. 431-438 ◽  
Author(s):  
R. C. Nageswara Rao ◽  
J. H. Williams ◽  
M. V. K. Sivakumar ◽  
K. D. R. Wadia
Keyword(s):  
Water Deficit ◽  
Growth Phases ◽  
Effect Of Water

The Effect of Water Deficit and Waterlogging on the Yield Components of Cotton

Crop Science ◽  
2018 ◽  
Vol 58 (4) ◽  
pp. 1751-1761 ◽  
Author(s):  
Hao Wu ◽  
Xiugui Wang ◽  
Min Xu ◽  
Jinxing Zhang
Keyword(s):  
Water Deficit ◽  
Yield Components ◽  
Effect Of Water

scholarly journals Effect of Seed Inoculation on Alfalfa Tolerance to Water Deficit Stress

2017 ◽  
Vol 45 (1) ◽  
pp. 82-88
Author(s):  
Mahnaz ZAFARI ◽  
Ali EBADI ◽  
Sodabeh JAHANBAKHSH GODEHKAHRIZ
Keyword(s):  
Water Deficit ◽  
Osmotic Potential ◽  
Mycorrhizal Fungi ◽  
Soluble Sugars ◽  
Compatible Solutes ◽  
Membrane Stability ◽  
Forage Yield ◽  
Water Deficit Stress ◽  
Cell Membrane Stability ◽  
Seed Inoculation

Water deficit is one of the most important environmental stresses that adversely affect crop growth and production and mycorrhizal fungi and symbiotic bacteria have important role in resistance to drought stress. The effect of biofertilizers on alfalfa stress tolerance was studied at the greenhouse condition. Treatments comprised three water-deficit stresses (35%, 55% and 75% of field capacity) and four seeds inoculations (Glomus mosseae, Sinorhizobium meliloti, G. mosseae + S. meliloti and non-inoculated). Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively) and osmotic potential (45.84%). The inoculation of seeds increased the capability of the plants in counteracting the stress, so that the production of compatible solutes was increased and the photosynthetic indices, proline, osmotic potential, membrane stability and forage yield were improved by seed inoculation. Mycorrhiza improved photosynthetic indexes and proline, but bacteria had more efficacy on membrane stability and forage yield. However, double inoculation due to the synergistic effect of mycorrhiza and Sinorhizobium, had the greatest effect than Solitary inoculation. Our results suggest that biofertilized alfalfa plants were better adapted than non- biofertilized ones to cope with water deficit.

scholarly journals Effect of Water Deficit on Gas Exchange Responses to Intercellular CO2 Concentration Increase of Quercus suber L. Seedlings

2019 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Mokhtar Baraket ◽  
Sondes Fkiri ◽  
Ibtissam Taghouti ◽  
Salma Sai Kachout ◽  
Amel Ennajah ◽  
...  
Keyword(s):  
Water Deficit ◽  
Intercellular Co2 Concentration ◽  
Co2 Concentration ◽  
Quercus Suber ◽  
Cork Oak ◽  
Concentration Increase ◽  
Effect Of Water ◽  
Negative Effect ◽  
Photosynthetic Responses ◽  
Intercellular Co2

In north Tunisia, the Quercus suber L. forests have shown a great decline indices as well as a non-natural regeneration. The climate changes could accentuate this unappreciated situation. In this study, the effect of water deficit on physiological behavior of Quercus suber seedlings was investigated. Photosynthetic responses of 15 months old Cork oak seedlings grown for 30 days under 40% and 80% soil water water content (control) were evaluated. Results showed a negative effect of water deficit and a positive effect of the intercellular CO2 concentration increase both on photosynthesis and transpiration. Stomata conductance might play a major role in balancing gas exchanges between the leaf and its environment. Moreover, global warming could negatively affect carbon uptake of Cork oak species in northern Tunisia. Elevated CO2 leaf content will benefit Cork oak growing under water deficit by decreasing both photoysnthesis and transpiration, which will decrease either the rate or the severity of water deficits, with limited effects on metabolism. the results suggest that high intercellular CO2 concentration could increase water use efficiency among Cork oak species.

scholarly journals Wild rocket – effect of water deficit on growth, flowering, and attractiveness to pollinators

2014 ◽  
Vol 64 (6) ◽  
pp. 482-492 ◽  
Author(s):  
Jelena Barbir ◽  
José Dorado ◽  
César Fernández-Quintanilla ◽  
Tijana Blanusa ◽  
Cedo Maksimovic ◽  
...  
Keyword(s):  
Water Deficit ◽  
Effect Of Water ◽  
Rocket Effect ◽  
Wild Rocket

scholarly journals Screening cowpea [Vigna unguiculata (L.) Walp.] varieties by inducing water deficit and RAPD analyses

2003 ◽  
Vol 3 (3) ◽  
pp. 174-178
Author(s):  
Abaye Badiane Franccedil;ois ◽  
Diouf Diaga ◽  
Sane Djibril ◽  
Diouf Omar ◽  
Goudiaby Venceslas ◽  
...  
Keyword(s):  
Water Deficit ◽  
Vigna Unguiculata

The effect of water deficit and livestock stocking density on soil organic carbon stocks in Namibia

Geoderma ◽  
2021 ◽  
pp. 115522
Author(s):  
Lydia Mumbi Chabala ◽  
Simon Angombe ◽  
Wulf Amelung ◽  
R Murray Lark
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Water Deficit ◽  
Stocking Density ◽  
Carbon Stocks ◽  
Effect Of Water ◽  
Soil Organic Carbon Stocks
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