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You are here: Home>JBAR Journal​>JBAR Archive>Article Page: jbar-180118-187.html

​Journal of Bioscience and Agriculture Research

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J. Bios. Agric. Res. | Volume 18, Issue 02, 1521-1530| https://doi.org/10.18801/jbar.180218.187
​Article type: Research article, Received: 05.08.2018, Revised: 03.12.2018, Date of Publication: 14 December 2018.

Variability, correlation and path analysis in drought tolerant rice (Oryza sativa L.)

Shahadat Hossain (1), Md. Salim (2), Md. Golam Azam (1) and Shibly Noman (3)
 
1 Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Hathazari, Chittagong
2 Hill Tract Agricultural Research Station, Bangladesh Agricultural Research Institute, Ramgarh, Khagrachari
3 Krishi Gobeshona Foundation, Hill Agricultural Research Station, Bangladesh Agricultural Research Institute, Khagrachari, Bangladesh

Abstract
Yield contributing traits in thirty three rice genotypes were studied for variances, heritability, correlation (genotypic and phenotypic) and path coefficient analysis. The highest phenotypic variation (σ2p), was found for No. of grain per panicle and the lowest was observed in 100 grain wt. High genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) for No. of unfilled grains per panicle, No. of grains per panicle and grains yield per hill, indicated that selection of these traits would be effective. The high heritability estimates along with low genetic advance indicates that non-additive type of gene action and genotype-environment interaction plays a significant role in the expression of the traits as observed in days to 50% flowering, No. of tillers per hill days to harvesting and panicle length (cm). No. of grains per panicle with grains yield per hill as well as length showed significant and positive correlation but No. of tillers per hill showed highly significant and negative correlation with days to 50% flowering both at genotypic and phenotypic level. Path coefficient analysis showed that No. of grains per panicle had maximum direct effect on grain yield followed by No. of panicles per hill, and No. of tillers per hill. The lowest direct effect on grain yield was exhibited by No. of unfilled grains (0.0732) followed by plant height, No. of primary branches per panicles, and No. of secondary branches per panicles respectively.  Number of grains per panicle had maximum direct effect on grain yield followed by No. of panicles per hill and No. of tillers per hill. The results prescribed that there is a highly significant positive correlation with positive direct effect was observed in No. of grains per panicle, No. of panicles per hill, No. of unfilled grains per panicle, No. of primary branches and No. of secondary branches.

Key Words: Genetic variability, heritability, character association and path coefficient analysis
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Article Citations
​MLA.
Hossain, S. et al. "Variability, Correlation and Path Analysis in Drought Tolerant Rice (Oryza Sativa L.)." Journal of Bioscience and Agriculture Research 18(2) (2018): 1521-1530.
 
APA
Hossain, S., Salim, M., Azam, M. G., & Noman, S. (2018). Variability, correlation and path analysis in drought tolerant rice (Oryza sativa L.). Journal of Bioscience and Agriculture Research, 18(2), 1521-1530.
 
Chicago
Hossain, Shahadat, Md. Salim, Md. Golam Azam, and Shibly Noman. "Variability, correlation and path analysis in drought tolerant rice (Oryza sativa L.)." Journal of Bioscience and Agriculture Research no. 18(2) (2018): 1521-1530.
 
Harvard
Hossain, S, Salim, M, Azam, MG and Noman, S 2018. Variability, correlation and path analysis in drought tolerant rice (Oryza sativa L.). Journal of Bioscience and Agriculture Research, 18(2), pp. 1521-1530.
 
Vancouver
Hossain S, Salim M, Azam MG and Noman S. Variability, correlation and path analysis in drought tolerant rice (Oryza sativa L.). Journal of Bioscience and Agriculture Research. 2018 December 18(2): 1521-1530.

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© 2018 The Authors. This article is freely available for anyone to read, share, download, print, permitted for unrestricted use and build upon, provided that the original author(s) and publisher are given due credit. All Published articles are distributed under the Creative Commons Attribution 4.0 International License.
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