PJB-2018-131
STABILITY ANALYSIS OF DIFFERENT COTTON GENOTYPES UNDER NORMAL AND WATER-DEFICIT CONDITIONS
Muhammad Riaz
Abstract
Cotton plant observes significant reduction in seed cotton yield when subjected to water stress. To find out genotypes having better drought tolerance, seven genotypes of Gossypium hirsutum L. were tested under two moisture levels i.e. under normal and drought stress conditions at five locations of Punjab, Pakistan (Faisalabad, Sahiwal, Vehari, Rahim Yar Khan and Bahawalpur) for two years. Genotype × Environment Interaction (GEI) was studied using GGE biplot and AMMI analysis. The genotypes G3 and G6 were stable under normal condition while under drought condition the stable genotype was G5 (FH-326) when analysed using AMMI biplot scheme. While GGE biplot view of which won where showed that under normal condition the genotypes, G2 and G4 were the best performer genotype under FSD2 where as under drought condition; G5 was the best yielder genotype at all five locations. In the same way ranking of genotype view of GGE biplot analysis showed that the G5 was the ideal genotype under both conditions. So, it is concluded that the genotype G5 (FH-326) was found best for drought stress condition and can be cultivated under water scarce areas of Punjab.
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