Journal of Food, Agriculture and Environment

Relationships between morphological characteristics and bean yield under drought stress and non-stress conditions

Author(s):

Noshin Farjzadeh Memari Tabrizi ¹, Varahram Rashidi ², Mehrdad Yarnia ^3*, Elnaz Farajzadeh ¹

Recieved Date: 2011-07-02, Accepted Date: 2011-10-11

Abstract:

For the evaluation of some morphological traits and relationshipss with bean grain yield in water deficit stress, an experiment was conducted 2009- 2010 under stress and non-stress conditions with 16 genotypes based on complete block design with three replications at Agricultural Research Station, Islamic Azad University, Tabriz Branch. Combined results of analysis of variance showed that there were significant differences between the genotypes for all traits. Also interaction genotype × condition was significant for all characters that represented, respectively, and different modes of genetic diversity and its reaction to the experimental conditions.The simple correlation for the traits showed that, under drought stress and without, the highest positive and significant correlation with grain yield was related to weight and number of seeds per plant. In addition, to environmental stress with the above characteristics, the number of seeds per pod had significant positive correlation with grain yield. Regression analysis for grain yield in both conditions showed that traits affecting on yield under non-stress condition, 100 kernel weight and seed number per plant, and under drought stress conditions addition to the above two traits seed number per pod also had a positive effect with yield. Path analysis showed that nonstress condition had direct effect on the yield via number of seeds per plant while under drought condition; in addition to the above traits seed number per pod had positive and significant direct effect. Thus, selection of superior genotypes can utilize from attribute the number of seeds per plant under both conditions and seed number per pod under drought condition.

Keywords:

Beans, correlation, drought stress, passes analysis, regression

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Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 3&4
Category: Agriculture
Pages: 264-267

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