Vol. 17 No. 3
Genetic diversity analysis of Maize (Zea mays L.) inbred lines under drought stress using grain yield and yield related traits
Abstract: Genetic diversity is a key to the success of a breeding programme which helps breeder to develop novel cultivars which are adaptable to target environment. In the present study, one hundred and thirty three inbred lines were evaluated under controlled and drought stress environment at two locations Dharwad and Devihosur to assess their genetic diversity using morphological traits. Pooled ANOVA for all the measured traits were significant (p=<0.05). Environment variance was higher than genotype and genotype x environment variance suggesting the climatic conditions played a crucial role in expression of traits. Mahalanobis D2 method identified seven and eleven cluster under controlled and drought stress environment respectively. Under drought stress environment DIL72, DIL10, DIL101 and DIL44 showed high mahalanobis distance values and low drought susceptibility index indicating their diverse and drought tolerance nature. These lines could be further used to develop heterotic hybrids or base population to generate new recombinants.
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