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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2019, Volume : 7, Issue : 3
First page : (67) Last page : (73)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7122

Capturing the Genetic Diversity for Grain Quality Attributes in a Set of Temperate Rice (Oryza sativa L.) Germplasm by Cluster Analysis
and the Assessment of Wx gene Polymorphism

Arpit Gaur*, Ghulam Ahmad Parray, Asif Bashir Shikari and Sofi Najeeb

Division of Genetics and Plant Breeding
Sher-e-Kashmir University of Agricultural Sciences & Technology - Kashmir
Srinagar (190025), Jammu & Kashmir, India
*Corresponding Author E-mail: drarpitgaur@gmail.com
Received: 6.12.2018 | Revised: 11.01.2019 | Accepted: 20.01.2019  

 ABSTRACT

This study analysed the genetic diversity in a set of ninety elite genotypes of temperate rice on the basis of grain quality attributes and polymorphism in Wx gene. The UPGMA cluster analysis amalgamated the genotypes in five major cluster each having 8, 21, 36, 12 and 13 genotypes, respectively. The majority of genotypes were characterized with low amylose, soft gel consistency and intermediate gelatinization temperature. Two genotypes namely Mushkbudji and Kamad were registered as aromatic rice. The principal component analysis explained the contribution of each component to total variance.  First three components viz. KLBC, KLAC and KBBC were found to be contributing in 52.34% of variation. The assessment of the polymorphism in Wx gene was also done with the help tightly linked RM190 microsatellite. A total eight different types allele were produced in 76 genotypes by RM190 SSR marker. The RM190 was successful in explaining 40.23% of total phenotypic variations. The UPGMA dendrogram, drawn on the basis of genotypic data, further cluster the 76 genotypes in six major clusters.

Key words: Genotypes, Rice, Yield, Food, Grain.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Gaur, A., Parray, G. A., Shikari, A.B. and Najeeb, S., Capturing the Genetic Diversity for Grain Quality Attributes in a Set of Temperate Rice (Oryza sativa L.) Germplasm by Cluster Analysis and  the Assessment of Wx gene Polymorphism, Int. J. Pure App. Biosci.7(3): 67-73 (2019). doi: http://dx.doi.org/10.18782/2320-7051.7122