Arunachalam, V. (1993) Concepts of breeding derived from experiments in peanut( Arachis hypogaea L.). Journal of Oilseeds Research, 10 (1). pp. 70-80.
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Abstract
The initial step of a breeding programme is as vital as the final improved yield desired by a breeder. An analysis of experimental evidence in the light of underlying genetic concepts suggests a choice of parents on genetic divergence given by a multivariate measure. Breeding programmes initiated from heterotic F1's envisage a greater probability of success in further generations compared to programmes initiated from any F1 including non-heterotic ones. Limits to parental divergence are therefore set to realize F1 heterosis. Large F2 populations of heterotic F1's need an ordering process to locate productive recombinants. A method of forming a ranked F2 distribution is suggested using values of a selection index based on physiological and yield components. Selection intensity of the order of 25% is most often adequate to derive desirable selection in F3 and superior lines in F5
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Groundnut; Genetic Divergence; Breeding Selection; Recombination; Heterosis; Selection Intensity |
| Author Affiliation: | Division of Genetics Indian Agricultural Research Institute, New Delhi 110012, India |
| Subjects: | Statistics and Experimentation Crop Improvement |
| Divisions: | Groundnut |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 08 Sep 2013 12:19 |
| Last Modified: | 08 Sep 2013 12:19 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/11640 |
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