Kamali, A. (2013) Effect of Drought Stress on Yield and Yield Components of Cotton Using Biplot Analysis. Masters thesis, University of Zabol.
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Abstract
In the present study, the response of 14 cotton cultivars to water stress was determined using an complete randomized block design (RCBD) with three replications on Nehbandan in Khorasan Jonoubi province, , at Agricultural Research farm of Technical and Vocational Training center on 1322. Variance analysis of traits showed significant difference among cultivars for traits under stress and non-stress conditions. The assessment of simple correlation coefficient showed that the yield was positively and significantly correlated number of bolls per plant at p 3.32 level. The stepwise regression analysis showed that number of bolls per plant and number of fruiting branch in stress and non-stress conditions can be considered as the best indices for yield improve. In non-stress condition, the Principle component analysis identified four components that explain 83% of the total variation and in stress condition identified three components that explain 71% of the total variation. The cluster analysis by Wards method divided the cotton genotypes to three and four distinct clusters in stress and non-stress conditions respectively. The Biplot graphs under non-stress conditions identified Bakhtegan, Varamin, T3- 39-84 as the best cultivars on both mean and stability. In all conditions the number of fruiting branch and number of bolls per plant traits identified as discriminative traits and yield as representative trait. In stress condition the best cultivars on both mean and stability were Bakhtegan, Sahel, T3-39-84 respectively. The highest yield under non-drought stress conditions related to Bakhtegan and in drought stress conditions related to T3-39-84 cultivar
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Cotton, Drought Stress, Yield, Yield Components, Biplot Analysis |
| Subjects: | S Agriculture > SB Plant culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 05 Apr 2016 07:20 |
| Last Modified: | 05 Apr 2016 07:20 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/229 |
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