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Greener Journal of Plant Breeding and Crop Science Vol. 6(3), pp. 15-25, 2018 ISSN: 2354-2292 Copyright ©2018, the copyright of this article is retained by the author(s) DOI Link: http://doi.org/10.15580/GJPBCS.2018.3.092818140 http://gjournals.org/GJPBCS |
Correlation and Path Coefficient Analysis for Yield and Yield Related Traits of Upland Rice (Oryza sativa L.) Genotypes in Northwestern, Ethiopia
Tewachew Atsedemariyam
Ethiopian Institute of Agricultural Research P.O.Box, 2003, Addis Ababa, Ethiopia. Pawe Agricultural Research center, P.O.Box, 25, Pawe, Ethiopia.
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ARTICLE INFO |
ABSTRACT |
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Article No.: 092818140 Type: Research DOI:10.15580/GJPBCS.2018.3.092818140
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This research was conducted with the objective of assessing the trait association and direct and indirect effects of yield related traits on grain yield of upland rice genotypes. A total of 23 rice genotypes evaluated in randomized complete block design with three replications in 2017 main cropping season at Pawe and Assosa. Grain yield exhibits highly significant (p ≤ 0.01) positive genotypic correlation with days to maturity (rg=0.61), kernel length (rg=0.55) and plant height (rg=0.59) at both locations, grain yield showed significant positive phenotypic correlations with plant height (rp=0.44) and thousand grain weight (rp=0.29). The genotypic path coefficient analysis at Pawe revealed that days to maturity, plant height and length width ratio exerted highest positive direct effect on grain yield and at Assosa thousand grain weight and panicle length exerted positive direct effect on grain yield at phenotypic level. The existence of strong positive correlation between grain yield and other traits helps in identifying traits that could be used for indirect selection for the improvement of grain yield. Therefore, to facilitate selection in breeding for high yield and other desirable traits, it is logical to examine various components and give more attention to those having the greatest influence on grain yield. |
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Submitted: 28/09/2018 Accepted: 09/10/2018 Published: 03/12/2018 |
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*Corresponding Author Atsedemariyam Tewachew E-mail: atsdemary21@ gmail.com |
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Keywords: Correlation, Direct effect, Indirect effect, Rice and Path coefficient analysis. |
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Post-Publication Peer-review Rundown View/get involved, click [Peer-review] |
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Cite this Article: Tewachew, A (2018). Correlation and Path Coefficient Analysis for Yield and Yield Related Traits of Upland Rice (Oryza sativa L.) Genotypes in Northwestern, Ethiopia. Greener Journal of Plant Breeding and Crop Science, 6(3), 15-25, http://doi.org/10.15580/GJPBCS.2018.3.092818140.
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