Improving Growth and Yield of Salt-stressed Cowpea Plants by Exogenous Application of Ascobin
abdelgawad, zinab;
Abstract
Abstract: Among the abiotic stresses, salinity is one of the most destructive factors which limit crop production
considerably. Greenhouse experiments were conducted in Faculty of Women for Arts, Science and Education,
Botany Department. Ain shams University, Cairo, Egypt during two successive summer seasons 2011 and 2012 to
study the differential responses of cowpea (Vigna sinensis) to salinity stress (0, 50 and 75 mM) and foliar treatment
with Ascobin (compound composed of ascorbic acid and citric acid with ratio of 2:1). Irrigation with different
salinity levels caused significant reduction in fresh and dry weight of cowpea plants. Meanwhile total soluble sugars
content was increased under salt stress conditions. Salinity stress with different levels caused higher reduction in
yield and yield components (Number of pods/plant, yield/plant and weight of 100seeds) Application of Ascobin not
only mitigated the inhibitory effect of salt stress in cawpea, but also in some cases induced a stimulatory effect
greater than that estimated in the control plants on growth parameters which were accompanied by marked increases
in photosynthetic pigments. On the other hand, yield and yield components showed progressive increases with
increasing Ascobin treatments. Ascobin improved salt tolerance in cowpea by enhancing the accumulation of
nontoxic metabolites such as total soluble sugars, proline and glycine betaine as well as N, P and K as protective
adaptation.
considerably. Greenhouse experiments were conducted in Faculty of Women for Arts, Science and Education,
Botany Department. Ain shams University, Cairo, Egypt during two successive summer seasons 2011 and 2012 to
study the differential responses of cowpea (Vigna sinensis) to salinity stress (0, 50 and 75 mM) and foliar treatment
with Ascobin (compound composed of ascorbic acid and citric acid with ratio of 2:1). Irrigation with different
salinity levels caused significant reduction in fresh and dry weight of cowpea plants. Meanwhile total soluble sugars
content was increased under salt stress conditions. Salinity stress with different levels caused higher reduction in
yield and yield components (Number of pods/plant, yield/plant and weight of 100seeds) Application of Ascobin not
only mitigated the inhibitory effect of salt stress in cawpea, but also in some cases induced a stimulatory effect
greater than that estimated in the control plants on growth parameters which were accompanied by marked increases
in photosynthetic pigments. On the other hand, yield and yield components showed progressive increases with
increasing Ascobin treatments. Ascobin improved salt tolerance in cowpea by enhancing the accumulation of
nontoxic metabolites such as total soluble sugars, proline and glycine betaine as well as N, P and K as protective
adaptation.
Other data
| Title | Improving Growth and Yield of Salt-stressed Cowpea Plants by Exogenous Application of Ascobin | Authors | abdelgawad, zinab | Keywords | Ascobin; Metabolites; Yield; Salt stress; Vigna sinensis | Issue Date | 2011 | Journal | Life Science Journal |
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