A comparative study for drought tolerance and yield stability in different genotypes of barley (Hordeum vulgare L.)

Abstract

This comparative study was conducted to access the drought tolerance and yield stability in different genotypes of barley. Study was conducted in growing seasons of 2013-14 and 2014-15 by imposing two water regimes viz. optimal and water stressed. Result of study revealed sufficient genetic variability among the genotypes, substantial expression of genetic potential and the importance of selection was based on stress condition. The mean squares of irrigation regimes explained most of the variations for all the traits in both growing seasons, indicating the relative importance of the genotypes in drought tolerance. Water deficient conditions highly affect the various growth parameters, yield and yield traits in both the studied growing seasons. Among the studied genotypes, Line 2 genotype have minimum heading and maturity time so this genotype could be use as a source of earliness in breeding program. Further, Line 7 and Line 11 genotypes showed highest yield potential under water deficit condition in both seasons, possessed high values for MP, YSI, STI, GMP, YI, and least SSI values less than one indicating suitability of these genotypes for drought tolerance and desirability for both water deficit and non-deficit conditions.

Co-application of humic acid, potassium dihydrogen phosphate and melatonin (osmo-regulators) ameliorate the effects of drought stress in Barley (Hordeum vulgare L.)

“…Jau-17 relatively huge chlorophyll value, relative H2O proportion leading to better grain yield under drought stress as compared to Sultan-17. Different genotypes i.e.Sultan-17 and Jau-17 were difference in their relative chlorophyll and water content proved by findings of (Dai et al, 2020;El-Shawy et al, 2017). One variety have high-level of relative water content i.e.…”

Evaluation of some Barley Genotypes under Saline Soil Conditions

“…On the other direction, Giza129 and Giza135 were the most susceptible genotypes and had the worst tolerant indices. El-Shawy et al [42] observed that, Line-1 produced high values for STI, YSI and YI and low values of TOL under water stress condition.…”

Evaluation of some barley genotypes under saline soil conditions

“…On the other direction, Giza 129 and Giza 135 were the most susceptible genotypes and had the worst tolerant indices. El-Shawy et al [42] observed that, Line-1 produced high values for STI, YSI and YI and low values of TOL under water stress condition. The high values of STI indicates high tolerance and high yield potential for the tested genotype.…”