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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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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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Original Research Articles

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): 2441-2450
DOI: https://doi.org/10.20546/ijcmas.2020.902.279


Genetic Variability and Association Studies on Bpt-5204 Based Rice Mutants under Saline Stress Soil
C. Prashanth1*, K. Mahantashivayogayya1, J. R. Diwan2, P. H. Kuchanur3 and J. Vishwanath1
1Agricultural Research Station, Gangavati, University of Agricultural Sciences, Raichur - 584104, India
2Department of Genetics and Plant Breeding, College of Agriculture,
 University of Agricultural Sciences, Raichur- 584104, India
3Department of Genetics and Plant Breeding, College of Agriculture, Bheemarayangudi, University of Agricultural Sciences, Raichur - 584104, India
*Corresponding author
Abstract:

Present investigation was carried out with 12 advanced (M7) mutants developed using gamma rays on two varieties i.e., BPT-5204 and RP Bio-226 along with checks (Gangavati Sona and CSR-22) at Agricultural Research Station Gangavati, Karnataka state, India during kharif 2018. Analysis of variance revealed highly significant differences among the mutant lines for all morpho-physiological characters under study viz., Days to 50 per cent flowering, Plant height, Panicle length, Number of grains per panicle, Panicle weight, Productive tillers per hill, Length of flag leaf and Grain yield per plant. Higher magnitude of heritability (broad sense) and genetic advance as percentage of mean were observed for number of grains per panicle, productive tillers per hill, spikelet sterility, test weight, grain yield per plant, grain yield per ha and Na+/K+ ratio indicating presence of additive gene action and fixation of genes. Correlation study revealed that grain yield per plant exhibited significant positive association with plant height, panicle length, number of grains per panicle and panicle weight at phenotypic level under saline stress condition. However, significant negative association was observed in case of days to fifty per cent flowering. Path analysis revealed that plant height, panicle length, panicle weight and length of flag leaf exhibited direct positive effect on grain yield per plant. Hence, it would be rewarding to lay stress on these characters in selection programme for increasing the yield and to screen for salinity tolerance.


Keywords: Variability, BPT-5204 mutants, Association, Salinity tolerance in rice
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How to cite this article:

Prashanth. C, K. Mahantashivayogayya, J. R. Diwan, P. H. Kuchanur and Vishwanath. J. 2020. Genetic Variability and Association Studies on Bpt-5204 Based Rice Mutants under Saline Stress Soil.Int.J.Curr.Microbiol.App.Sci. 9(2): 2441-2450. doi: https://doi.org/10.20546/ijcmas.2020.902.279