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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.2018.7(6): 3359-3366
DOI: https://doi.org/10.20546/ijcmas.2018.706.394


Exploration of Genetic Diversity in Traditional Landraces of Rice for Yield and Its Attributing Traits under Saline Stress Condition
P. Raghavendra1*, B. M. Dushyantha Kumar1, H. M. Sachin Kumar1, R. Madhuri1
S. Gangaprasad1, S. L. Krishna Murthy2, B. C. Dhananjaya3, B. I. Halingali4 and Shailaja Hittalmani5
1Department of Genetics and Plant breeding, UAHS, Shivamogga-577204, Karnataka, India
2Division of crop improvement, CSSRI, Karnal-132001, Haryana, India
3Department of Soil science and agriculture chemistry, UAHS, Shivamogga-577204, Karnataka, India
4Department of Agricultural statistics, UAHS, Shivamogga-577204, Karnataka, India
5Department of Genetics and Plant breeding, UAS, Bangalore-560065, Karnataka, India
*Corresponding author
Abstract:

Genetic divergence study of 144 rice landraces using Mahalanobis D2 statistics revealed the presence of considerable genetic diversity. The 144 diverse landraces were grouped into 13 clusters with the cluster VI consists of maximum of 17 landraces followed by cluster XII which has 16 landraces. The maximum intra cluster distance was recorded in cluster V (969.20) followed by cluster II (917.05) indicating that the landraces included in these cluster were relatively more diverse. Among the inter cluster distances highest was recorded for cluster V and XII (5989.69) followed by cluster XI and XII (5155.12). The inter cluster distance was higher than the intra cluster distance indicating wide genetic diversity among the genotypes of different groups. For grain yield per plant, the highest cluster mean was recorded in cluster X (49.50gm) and lowest (14.50gm) was recorded in cluster VIII. The highest contribution towards total divergence was recorded by plant height (52.37%) followed by spikelet per panicle (24.88%), grain yield /plant (11.05%). These characters are highly genetic variable and genotype having these characters in different cluster could be used in breeding programme to develop high yielding cultivars in rice under saline condition.


Keywords: Rice, D2 analysis, Genetic diversity analysis, Landraces and Salinity
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How to cite this article:

Raghavendra P., B. M. Dushyantha Kumar, H. M. Sachin Kumar, R. Madhuri, S. Gangaprasad, S. L. Krishna Murthy, B. C. Dhananjaya, B. I. Halingali and Shailaja Hittalmani. 2018. Exploration of Genetic Diversity in Traditional Landraces of Rice for Yield and Its Attributing Traits under Saline Stress Condition.Int.J.Curr.Microbiol.App.Sci. 7(6): 3359-3366. doi: https://doi.org/10.20546/ijcmas.2018.706.394