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Pak. J. Bot., 42(4): 2249-2256, 2010. |
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Updated: 09-12-10 |
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Identification of elite pure-lines from local lentil germplasm Using diversity index based on quantiTative traits
TAYYABA SULTANA1*, SHAHID NADEEM1, ZARRIN FATIMA2 AND ABDUL GHAFOOR 3
Abstract: Three hundred and seventeen accessions of lentil collected from all over the country were evaluated for six quantitative traits to investigate inter and intra-accession diversity in association with geographic pattern. Variation indicated that areas with high geographic diversity that is supposed to present high biological diversity are yet to be explored. Classification of germplasm gave rise to some elite lines for specific characters and the accessions for days to flowering (45), days to maturity (7), plant height (12), pods per cluster (17) and seed weight (27) have been selected and suggested for exploitation in breeding programme. Twelve clusters were observed with varying degrees of inter-cluster dissimilarity that suggested the selection of diverse superior parents for hybridization. Some of the characters associated with origin as high seed weight of germplasm collected from Baluchistan is needed to exploit for specific trait/s. Germplasm distribution revealed that Punjab and Sindh represented a high collections along with high diversity, whereas other areas are yet to be explored. Similarly zone 3a, 6, 7, 9 and 10 along with high mountains lack complete representation that indicated the importance for future collection mission to these areas.
1GC University, Faisalabad. 2Quaid-i-Azam University, Islamabad 3Plant Genetic Resources Programme, National Agricultural Research Centre, Islamabad, Pakistan. |
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