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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
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.2017.6(7): 2680-2687
DOI: https://doi.org/10.20546/ijcmas.2017.607.377


Path Coefficient Analysis for Yield and Yield Contributing Traits in Rice (Oryza sativa L.) Genotypes
B. Kalyan1*, K.V. Radha Krishna1 and L.V. Subba Rao2
1Department of Genetics and Plant Breeding, College of Agriculture, Rajendranagar,PJTSAU, Hyderabad-500030, Telangana, India
2Crop Improvement Section, Indian Institute of Rice Research, Rajendranagar,Hyderabad-500030, Telangana, India
*Corresponding author
Abstract:

Selection for yield is often difficult in crop breeding because yield is a complex inherited character controlled polygenically, contributed by several component traits. In the present investigation path coefficient analysis with direct and indirect effect for nine quantitative traits were studied using fifty genotypes. A critical analysis of the results by path analysis revealed that the traits viz., number of filled grains per panicle exerted the highest positive direct effect on grain yield followed by 1000 grain weight, number of tillers per plant, number of productive tillers per plant, plant height and days to fifty per cent flowering were directly influencing the grain yield per plant. A critical analysis of correlation and direct and indirect effects indicated that emphasis should be directed towards selection of parents having higher number of productive tillers per plant coupled with higher number of filled grains per panicle, 1000 grain weight, plant height, longer panicle length. As the yield component, filled grains per panicle is intern dependent on panicle length and plant height attention should be paid towards increasing the panicle length, maintaining optimum plant height. Thus, a plant with medium height, sturdy culm with increased panicle length, higher number of filled grains per panicle and productive tillers per plant would be more desirable for selection to realize higher yield.


Keywords: Rice, Correlation, Path coefficient, Yield.
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How to cite this article:

Kalyan, B., K.V. Radha Krishna and Subba Rao, L.V. 2017. Path Coefficient Analysis for Yield and Yield Contributing Traits in Rice (Oryza sativa L.) Genotypes.Int.J.Curr.Microbiol.App.Sci. 6(7): 2680-2687. doi: https://doi.org/10.20546/ijcmas.2017.607.377