Upadhyaya, H.D. and Reddy, L.J. and Dwivedi, S.L. and Gowda, C.L.L. and Singh, S. (2009) Phenotypic diversity in cold-tolerant peanut (Arachis hypogaea L.) germplasm. Euphytica , 165 (2). pp. 279-291.
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Abstract
Tolerance to low temperature is an important prerequisite for optimal performance of peanut (Arachis hypogaea L.) in a number of temperate peanut-growing environments. One hundred fifty-eight peanut accessions belonging to five botanical types, known to be tolerant to low temperature (12°C) at germination, were evaluated for phenotypic diversity for 15 morphological traits in the 2001 rainy season and for 15 agronomic and two seed quality traits in the 2001 rainy and 2001/2002 post-rainy seasons. Analysis of data, using the residual maximum-likelihood approach indicated that variance components due to genotypes were significant for all traits in the rainy and for all but two traits in the post-rainy season. Clustering based on scores of nine principle components delineated four clusters. The cold-tolerant genotypes and the standard control cultivars in the four clusters differed in mean, variance, and range both during rainy and post-rainy seasons for a range of agronomic traits, indicating the diversity among the clusters. The cold-tolerant accessions were superior to control cultivars for several agronomic traits compared with their respective controls in both the rainy and post-rainy seasons, so their use in breeding should result in genetically diverse cold-tolerant high-yielding peanut cultivars.
| Item Type: | Article |
|---|---|
| Author Affiliation: | International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502 324, India |
| Subjects: | Crop Improvement Crop Improvement > Genetics/Genomics |
| Divisions: | Groundnut |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 28 Nov 2010 20:35 |
| Last Modified: | 29 Dec 2010 20:17 |
| Official URL: | http://dx.doi.org/10.1007/s10681-008-9786-2 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/770 |
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