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Genetic architecture and population structure of Oat Landraces (<em>Avena sativa</em> L.) using molecular and morphological descriptors

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Title Statement Genetic architecture and population structure of Oat Landraces (<em>Avena sativa</em> L.) using molecular and morphological descriptors
 
Added Entry - Uncontrolled Name Rana, Maneet
Gupta, Sonam
Kumar, Neeraj
Ranjan, Rajeev
Sah, R P
Gajghate, Rahul
Dwivedi, K K
Ahmed, S
 
Uncontrolled Index Term Genetic diversity; Landraces; Oat; Population structure; SSR markers
 
Summary, etc. Oat is grown as winter forage in India. It is a self-pollinated crop with less variability. However, the variation for<br />different morphological traits in oat germplasm may be available at genotypic level. The present study was conducted to<br />find out the genetic diversity among 24 oat landraces using 9 morphological traits and 24 SSR primers. Morphological data<br />observed across the 24 landraces showed wide variation and grouped various landraces into two clusters. GFY and DMY<br />were positively and significantly correlated with most of the traits studied. The molecular analysis using 24 SSR primers<br />resulted amplification of 62 polymorphic alleles with an average of 2.58 alleles per primer. Size of amplified alleles ranged<br />from 70 to 480 bp. Mean polymorphic information content was 0.42 showing moderate level of SSR polymorphism. Cluster<br />analysis based on SSR data differentiated 24 oat landraces into three major clusters. Bayesian model-based STRUCTURE<br />analysis assigned landraces into two clusters and showed the extent of admixture within individuals. Clustering pattern of<br />oat landraces based on SSR marker profiles were different from that of morphometric traits. So, based on the pooled<br />analysis at morphological and molecular level, the landraces IG-02-121, IG-02-129 and IG-02-113 were found superior for<br />morphological traits as well as most distant among all the landraces under study. Hence, these landraces could be used in for<br />future breeding programmes for genetic improvement in oats.<br /><br />
 
Publication, Distribution, Etc. Indian Journal of Traditional Knowledge (IJTK)
2019-07-18 15:58:02
 
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http://op.niscair.res.in/index.php/IJTK/article/view/26803
 
Data Source Entry Indian Journal of Traditional Knowledge (IJTK); ##issue.vol## 18, ##issue.no## 3 (2019): Indian Journal of Traditional Knowledge
 
Language Note en