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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 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(12): 3451-3459
DOI: https://doi.org/10.20546/ijcmas.2017.612.401


Genetic Variability, Correlation and Leaf Blast Resistance Studies in Early Maturing Rice Genotypes under Hilly Conditions
G.N. Hosagoudar1*, Basavaraj S. Kovi2 and H.K. Sheela3
1Rice Pathologist and Head, AICRP on Rice, AHRS, Ponnampet, Karanataka, India
2Rice Breeder on contract basis, AHRS, Ponnampet, Karanataka, India
3Contract basis, AHRS, Ponnampet, Karanataka, India
*Corresponding author
Abstract:

An experiment was carried out to screen for the blast disease and to estimate the genetic variability parameters and correlation patterns of yield and yield attributed characters in 18 rice genotypes under hilly conditions. Analysis of variance (ANOVA) revealed the existence of significant differences among genotypes for all traits studied. Genotypic coefficient of variation played a major role for the expression of the traits and ranged from 14.10 (Days to 50% flowering) to 37.24 (grain yield/ha). Heritability ranged from 89.95 (grain yield/ha) to 98.91 (plant height). High genotypic variance and high heritability coupled with high genetic advance as percent of mean was found for number of panicles/plant (21.20, 92.17 and 41.92), number of panicles/m2 (21.20, 92.17 and 41.92) and grain yield/ha (37.24, 89.95 and 72.76) respectively, indicated that high response to selection for these traits. On the basis of mean performance, out of eighteen entries 7 entries found resistant and remaining 11 entries found moderately resistant. Out of 7 resistant entries one entry namely IET-25148 recorded highest grain yield (4562.27 Kg/ha) and it was found 14.20% superior in grain yield than local check Tunga (3101.42 Kg/ha) followed by the moderately resistant entries IET-25144 (4250.89 Kg/ha) and IET-25151 (4186.83 Kg/ha) which found 11.09% and 10.44% superior in grain yield respectively. Traits which were positively correlated viz. days to 50% flowering (0.47), number of panicles/plant (0.92) and plant height (0.26) could be used for their simultaneous improvement.


Keywords: Hilly rice, Heritability, Genetic advance, Correlation, Leaf blast.
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How to cite this article:

Hosagoudar, G.N., Basavaraj S. Kovi and Sheela, H.K. 2017. Genetic Variability, Correlation and Leaf Blast Resistance Studies in Early Maturing Rice Genotypes under Hilly Conditions.Int.J.Curr.Microbiol.App.Sci. 6(12): 3451-3459. doi: https://doi.org/10.20546/ijcmas.2017.612.401