Rosielle, A.A. and Hamblin, J. (1981) Theoretical aspects of selection for yield in stress and non-stress environments. Crop Science, 21 (6). 943-946 .
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Abstract
Tolerance to stress is defined as the difference in yield between stress and nonstress environments, while mean productivity is the average yield in stress and nonstress environments. Equations are developed for the genetic correlations of tolerance and mean productivity with one another and with yields in stress and nonstress environments in terms of the ratio of genetic variances and the genetic correlations between yield in stress and nonstress environments. The equations show that selection for tolerance to stress will generally result in a reduced mean yield in nonstress environments and a decrease in mean productivity. Selection for mean productivity will generally increase mean yields in both stress and nonstress environments. Tolerance and mean productivity show negative genetic correlations when the genetic variance in stress environments is less than the genetic variance in nonstress environments.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Western Australian Dep. Agric., WA, Australia |
| Subjects: | Crop Improvement > Genetics/Genomics Crop Improvement > Plant Breeding |
| Divisions: | UNSPECIFIED |
| Depositing User: | Sandhya Gir |
| Date Deposited: | 13 Oct 2010 05:02 |
| Last Modified: | 20 Oct 2010 10:14 |
| Official URL: | https://www.crops.org/publications/cs/abstracts/21... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/8 |
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