Genetic diversity in indigenous and exotic linseed germplasm (Linum usitatissimum L.)
Abstract
Field experiments were conducted involving 103 indigenous and exotic accessions of linseed germplasm during rabi 2011-12 and rabi 2012-13 at ICAR-NBPGR Regional Station, Akola to assess the extent of genetic diversity in the germplasm based on seven quantitative traits. Using Mahalonobis’ D2 distance, the germplasm were grouped into 12 clusters. Cluster I was the largest with 23 accessions, cluster XII was smaller with two accessions and clusters V, VI, VIII, X and XI were the smallest with one accession in each. The contribution of seed oil content and 1000 seed weight towards genetic divergence were higher. The inter-cluster distance was the farthest between cluster IX and cluster XII and cluster VIII and XII. Hybridization between IC 567363 in cluster VIII versus EC 541215 and EC 541218 in cluster XII and EC 541198, IC 397953, IC 267673 in cluster IX versus EC 541215 and EC 541218 in cluster XII is suggested to obtain desirable progenies.
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