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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
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NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(9): 1749-1756
DOI: https://doi.org/10.20546/ijcmas.2017.609.216


Studies on Genetic Diverity in Rice (Oryza sativa L.)
C.A. Sowmiya* and M. Venkatesan
Department of Genetics & Plant Breeding, Faculty of Agriculture, Annamalai University, Annamalai Nagar – 608 002, Tamil Nadu, India
*Corresponding author
Abstract:

The present investigation was conducted at Plant Breeding Farm, Department of Genetics and Plant Breeding, Faculty of Agriculture, Annamalai University during 2015 – 2017. The experiment was carried out to explore the extent of divergence in 48 rice genotypes for nine characters. In D2 analysis, the 48 genotypes were grouped into nine clusters. The clustering pattern indicated that there was no parallelism between genetic diversity and geographical origin as the genotypes from different origins were included in same clusters and vice versa. The maximum intra cluster distance was registered in cluster VIII (35.87). The maximum inter cluster distance was found between Cluster VI and Cluster VIII (54.23) followed by Cluster VIII and IX (51.01), cluster V and VIII (50.26) and cluster III and VIII (45.60). Genetically distant parents from those clusters could be able to produce higher heterosis in progenies on hybridization. Grain yield per plant and thousand grain weight were the major contributors towards the total genetic divergence among the genotypes studied. Selection could be made based on grain yield per plant and thousand grain weight for the progenies identified.


Keywords: Divergence, D2 analysis, Intra cluster, Inter cluster and heterosis.
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How to cite this article:

Sowmiya C. A. and Venkatesan M. 2017. Studies on Genetic Diverity in Rice (Oryza Sativa L.).Int.J.Curr.Microbiol.App.Sci. 6(9): 1749-1756. doi: https://doi.org/10.20546/ijcmas.2017.609.216