Naveed, M. and Shafiq, M. and Rafiq, C.M. and Afzal Zahid, M. (2015) Genetic diversity in new chickpea accessions for fusarium wilt resistance, canopy temperature and yield components under drought milieus. Australian Journal of Crop Science, 9 (6). pp. 538-544.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Restricted to ICRISAT researchers only |
Abstract
Chickpea fusarium wilt is one of the major causes of low productivity under water deficit environments in Pakistan. Searching newly developed chickpea genotypes for the desirable recombinants possessing wilt resistance along with other yield components was the objective of this experiment. Sixty accessions were laid out in an alpha lattice design with two replications. Analysis of variance for various traits revealed significant diversity among the genotypes which can be exploited for the development of superior chickpea segregants in productivity improvement programs. High to moderate estimates of heritability and genetic advance were recorded for fusarium wilt incidence, days to 50% flowering, total branches per plant, pods per plant, 100-seed weight, grain yield and harvest index. Significant relationship of grain yield with these characters was further established by means of principal component analysis. First four PCs out of total ten achieved eigenvalues > 1 and explained 75.5% of overall variability. Days to 50% flowering, 100-seed weight and grain yield contributed highest weight on PC1 that explained 31.80% of total variation. PC2 described 21.60% of digression and was mainly related to pods per plant, plant height and canopy temperature. Cluster analysis classified the genotypes into 3 clusters with maximum 33 genotypes in cluster II. Cluster I comprised of drought tolerant accessions based on canopy temperature while cluster III consisted of bold seeded genotypes regarding 100-seed weight. Cluster II incorporated wilt resistant, early flowering yet late maturing genotypes having highest pods per plant, grain yield and harvest index. D2 statistics further confirmed the versatility of cluster II genotypes over cluster I and III for most of the studied characters
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Diversity; chickpea; fusarium wilt; canopy temperature; yield components |
| Author Affiliation: | Pulses Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan |
| Subjects: | Plant Production |
| Divisions: | Chickpea |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 14 Aug 2015 05:34 |
| Last Modified: | 14 Aug 2015 05:34 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/13703 |
Actions (login required)
 |
View Item |
