Investigating the effects of drought stress on seed yield and some biochemical traits of different genotypes of broad beans
Subject Areas : TensionFatemeh Sheikh 1 , Mohamad Taghi Feyzbakhsh 2 * , Elham Faghani 3
1 - Horticulture and Agronomy Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
2 - Agricultural and Natural Resource Research and Education Center Agricultural Research. Gorgan. Iran.
3 - Cotton Research Institute, Agricultural Research, Education and Extension Organization, Gorgan, Iran.
Keywords: Proline, Phenol, , Phenol Glycine betaein, Grain,
Abstract :
In this experiment, 21 different genotypes of broad bean were investigated in terms of grain yield, yield components and biochemical compounds under drought stress. For this purpose, an experiment was conducted in the form of randomized complete block design with three replications under two environments of normal irrigation and drought stress during 2015-2016 at Gorgan Agricultural Research Station. The results of analysis of variance showed that the effects of drought stress on all traits (number of pods per plant, number of seeds per pod, seed yield, biological yield, total endosperm phenol, proline, protein, and glycine betaine) except the weight of one hundred seeds. The comparison of the averages showed that the highest seed yield was obtained from G-faba-65 and G-faba-67 genotypes under normal and drought stress conditions (6410.3 and 3193.8 kg/hectare, respectively). The results showed that in drought stress, the amount of glycine betaine was 44.87%, phenol 15.67% and proline 7.69% was more than under normal irrigation conditions. Based on the grain yield indicators, the number of seeds in the pod and the amount of proline, genotype G-faba-67 showed higher resistance to drought stress than other genotypes.
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