Evaluation of tolerant and susceptible bread wheat genotypes under drought stress conditions
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 24
Abstract
In order to identify genotypes tolerant to drought, this research was conducted on 12 bread wheat genotypes as split plot based on randomized complete blocks (CRBD) with 3 replication, in which the Main factor included irrigation treatments and sub factor was the genotypes being studied. The study was conducted at research farm of Islamic Azad University, Ardabil Branch Iran, in 2008-09 cropping years. Positively significant correlation (r = 0.512**) between yield under drought stress (Ys) and yield under normal humidity (Yp) was indicative of correlation between drought stress and irrigated conditions. Indices such as STI, TOL, SSI, MP, HARM and GMP and analysis into main components and Bi Plot were used to identify genotypes tolerant to drought. In total, first and second components accounted for 92.92% of the variations, and based on the coefficients of indices in first and second components, first component was designated as component of tolerance, whereas the second component was designated as component of stress susceptibility. Based on information obtained from Bi Plot, genotype 4057 was designated as tolerant, whereas genotypes such as Sissons and Saratovskaya-29 were designated as susceptible to drought.
Authors and Affiliations
Vahid Mollasadeghi, Amir Gharib Eshghi, Reza Shahryari and Samaneh Elyasi
Keywords
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