Mohammad Moradi, Mehdi Soltani Hoveize, Asa Ebrahimi
Department of Plant Breeding, Shoushtar Branch,, Islamic Azad University, Shoushtar, Iran
Department of Plant Breeding, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Department of Plant Breeding, Science and Research branch, Islamic Azad university, Tehran, Iran
Key words: Drought stress, Canola, Tolerance indices, Biplot.
Drought is a wide-spread problem seriously influencing canola (Brassica napus L.) production and quality, but development of tolerance cultivars is hampered by the lack of effective selection criteria. The objective of this study was to evaluate the ability of several selection indices to identify drought tolerance cultivars under two environments (normal and drought stress), at dezful, Province in the agricultural year in 2013–2014. A randomized complete block design with four replications was used. Results of the variance analysis showed that differences among the genotypes, in terms of all indices and yield in normal and drought stress conditions were significant. Results of correlation between defferente drought tolerance indices with grain yield in both conditions(normal and water stress) showed that MP, GMP and STI were a successful index to select high yield and tolerante genotypes. Based on this indices and the results of the biplot diagram the genotypes Hyola401, Sarigol, RGS003 and Hyola308 had the best drought tolerance. and the genotypes Kimberley, Hysun110 and pF were high sensitivity to drought and can be identified as the most sensitive lines to drought.
Get the original articles in Source: Volume 6, Number 5, March 2015 – IJB