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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 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - 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
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(2): 88-94
DOI: https://doi.org/10.20546/ijcmas.2020.902.011


Study of Genetic Divergence in Lowland Rice Genotypes of Bihar
Nitesh Kushwaha1*, Ravi Kant1, Rajesh Kumar1, Nilanjaya1, Ruchika Chhaya2,Naincy Sinha2, Digvijay Singh3 and Tushar Arun Mohanty3
Department of Plant Breeding and Genetics, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India
*Corresponding author
Abstract:

The present experimental work was carried out at Rice Breeding Section, Pusa, Samastipur, with twenty-two lowland genotypes which were shown in R.B.D. style and were analysed for genetic divergence with the help of Mahalanobis’s D2 statistics.Twenty-two genotypes of rice were grouped into six clusters using Tocher’s method. The cluster I consists of maximum number of genotypes forming the largest cluster followed by cluster VI having three genotypes. The intra cluster distance ranged from 0.00 to 84.45. The inter cluster distance ranged from 52. to 282.49.Thehighest intra cluster distance was observed in cluster VI (84.85) followed by Cluster Ι (67.75). Maximum inter cluster distance was observed between cluster ΙΙΙ and Cluster ΙV followed by cluster ΙΙΙ and cluster ΙV. Per cent contribution of 15 characters and towards total genetic divergence was found maximum for 1000 grain weight (35.5 per cent) followed by days to flowering (22.08 per cent), grain length (17.32 per cent). It was observed that 1000 grain weight ranked 1st maximum times (82) followed by days to flowering (51), grain length (40), plant height (36).The genotype in cluster III and cluster IV due to maximum inter cluster distance between them, exhibited high degree of genetic diversity and thus may be utilized in future for heterosis breeding programme for getting high yielding recombinants.


Keywords: Genetic divergence, Lowland rice, Genotypes, Tocher’s method
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How to cite this article:

Nitesh Kushwaha, Ravi Kant, Rajesh Kumar, Nilanjaya, Ruchika Chhaya, Naincy Sinha, Digvijay Singh and Tushar Arun Mohanty. 2020. Study of Genetic Divergence in Lowland Rice Genotypes of Bihar.Int.J.Curr.Microbiol.App.Sci. 9(2): 88-94. doi: https://doi.org/10.20546/ijcmas.2020.902.011