Development of linkage map and mapping of QTLs for oil content and yield attributes in linseed (<Emphasis Type="Italic">Linum usitatissimum</Emphasis> L.) |
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| Authors: | Chandrawati Hemant Kumar Yadav |
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| Institution: | 1.CSIR-National Botanical Research Institute,Lucknow,India;2.Academy of Scientific and Innovative Research,New Delhi,India |
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| Abstract: | Linseed (Linum usitatissimum L.) is an important oilseed as well as stem fiber crop and rich source of omega-3 fatty acid. The present study aims to develop linkage map based on Indian genotypes and utilize it for mapping QTLs for important agronomic traits. Two diverse parental genotypes (KL-213 and RKY-14) of linseed showed wide range of variability for oil content and yield attributes. These parental genotypes also showed reasonable level of SSR polymorphism (~ 9.0%). The mapping population showed normal distribution of phenotypic traits. One hundred forty-six SSR markers were mapped on 15 linkage groups with marker density ranging from 3 to 18 markers per linkage group at average distance of 14.2 cM. A total of 11 QTLs were identified for six quantitative traits. Three QTLs for capsules/plant, 2 QTLs each for plant height, seeds/capsule and oil content and 1 QTL each for branches/plant and seed weight/plant were detected. Phenotypic variability explained by these QTLs varied from 1 to 15.23%. This study provides framework linkage map of linseed using Indian genotypes, which needs to be enriched further for future application in marker assisted breeding of linseed. |
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