Response of Different Genotypes of Faba Bean Plant to Drought Stress
Siddiqui, Manzer H. . 2015
Drought stress is one of the major abiotic stresses that are a threat to
crop production worldwide. Drought stress impairs the plants growth and yield.
Therefore, the aim of the present experiment was to select the tolerant genotype/s on the
basis of moprpho-physiological and biochemical characteristics of 10 Vicia faba genotypes
(Zafar 1, Zafar 2, Shebam, Makamora, Espan, Giza Blanka, Giza 3, C4, C5 and G853) under
drought stress. We studied the effect of different levels of drought stress i.e., (i) normal
irrigation (ii) mild stress (iii) moderate stress, and (iv) severe stress on plant height (PH)
plant−1, fresh weight (FW) and dry weight (DW) plant−1, area leaf−1, leaf relative water
content (RWC), proline (Pro) content, total chlorophyll (Total Chl) content, electrolyte
leakage (EL), malondialdehyde (MDA), hydrogen peroxide (H2O2) content, and activities of
catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) of genotypes of faba
bean. Drought stress reduced all growth parameters and Total Chl content of all genotypes.
However, the deteriorating effect of drought stress on the growth performance of genotypes
“C5” and “Zafar 1” were relatively low due to its better antioxidant enzymes activities (CAT,
POD and SOD), and accumulation of Pro and Total Chl, and leaf RWC. In the study,
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