Volume 10, Issue 4 (winter 2007)
jwss 2007, 10(4): 323-339 |
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M .Tousi Mojarrad, M. R. Ghannadha. Evaluation of Grain Yield Potential and Dry Matter Remobilization to Seed in Commercial Bread Wheat Cultivars in Normal and Drought Conditions. jwss 2007; 10 (4) :323-339
URL: http://jstnar.iut.ac.ir/article-1-625-en.html
URL: http://jstnar.iut.ac.ir/article-1-625-en.html
Abstract: (23565 Views)
In order to evaluate grain yield potential and study dry matter remobilization to seed, 8 commercial bread wheat cultivars were examined in two separate experiments, using randomized complete block design with 4 replications in 2003. There were significant differences for most traits in normal and drought conditions. Sarday variety had the least grain yield in the two environments. There was considerable variation between genotypes for independent parameters of dry matter remobilization to different plant parts in the two environments. Factor analysis showed that seven factors accounted for 100 % of the data total variance in normal and drought conditions. Factor analysis also showed that the effective traits to components grain yield , height and phenological traits were important for the selection of appropriate genotypes. Calculation of drought resistance indices showed that four indices including mean productivity, geometric mean productivity, harmonic index, stress tolerance index were more effective than other indices for the selection of drought tolerant genotypes.
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