Effect of drought stress on morho-physiological and yield components in chickpea genotypes

SOUMYA PATIL; C. M. NAWALAGATTI; U.V. MUMMIGATTI; M. P. POTDAR; R. S. BHAT

SOUMYA PATIL Department of Crop Physiology, University of Agricultural Sciences, Dharwad - 580 005, India
C. M. NAWALAGATTI Department of Crop Physiology, University of Agricultural Sciences, Dharwad - 580 005, India
U.V. MUMMIGATTI Department of Crop Physiology, University of Agricultural Sciences, Dharwad - 580 005, India
M. P. POTDAR Department of Agronomy, College of Agriculture, Dharwad University of Agricultural Sciences, Dharwad - 580 005, India
R. S. BHAT Department of Biotechnology, College of Agriculture, Dharwad University of Agricultural Sciences, Dharwad - 580 005, India

Keywords: Chickpea, Drought, Genotypes, Rainfed, Yeld components

Abstract

Chickpea is one of the major rabi pulse crops in India popularly called as “gram”. Many abiotic stressors limit crop output, among them moisture stress accounts for 40–50% yield loss in chickpea. In order to evaluate, and select chickpea genotypes with high yield potential under moisture stress most prerequisite, the current study was carried out at UAS Dharwad in Karnataka, over the 2021–22 and 2022–23 periods. To study morpho-physiological traits related to drought tolerance and to fix the criteria for reliable screening of drought tolerant chickpea genotypes, 15 chickpea genotypes grown on rainfed and irrigation condition. The effect of drought stress on plant height, number of branches, leaf area, total chlorophyll content, chlorophyll stability index, relative water content and yield attributes were evaluated. Among genotypes, the maximum plant height was recorded in DBGV 206 under rainfed condition and more number of branches per plant was recorded in A-1 under stress condition. Tolerant genotypes like ICCV 4958, DIBG 205 and BGD 111-1 were showed highest yield under rainfed condition with less percent yield reduction compare to irrigated ones. Which was due to maximum RWC, CSI, chlorophyll content with minimum reduction in morphological parameters under rainfed condition.