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J. Biosci. Agric. Res. | Volume 27, Issue 01, 2258-2266 | https://doi.org/10.18801/jbar.270121.275
​Article type: Research article | Received: 05.09.2019; Revised: 28.04.2021; First published online: 15 May, 2021.

Genetic variability analysis of different yield contributing characters of cultivated T. Aman rice (Oryza sativa) varieties​

A. K. M. H. Rahman 1, Md. Monirul Islam 2, Md. Kawsar Alam Nadim 2, Sayed Eshtiak Akter 3, S. M. Abdul Alim 4 and Md. Mahmud Al Noor 4
1 Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202.
2 Biotechnology Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2202, Bangladesh.
3 Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2202, Bangladesh.
4 Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202.

✉  Corresponding author: [email protected]  (Rahman, AKMH), Contact Number: +8801716733568.

Abstract
For any crop establishment research, it is compulsory to evaluate yield related characters with yield to determine the advancement of the subsisting best crop varieties. A field trial was carried out at the Genetics and Plant Breeding research farm at Bangladesh Agricultural University, Mymensingh, to assess yield and yield controlling characteristics for examining their variableness and varietal representation during Aman season. The experiment was disbursed with RCBD design with three replications. Variation due to genotypic coefficient was the maximum for grain yield/plant (53.20) succeeded by 50% flowering expressed in days (43.25), weight of 1000 seed (40.09), maturity expressed in days (33.05), plant height (32.41) and panicle number per plant (32.34). The coefficient of variation due to phenotype was the highest for the unfilled grain’s number (85.45) accompanied by grain’s yield (64.38), number of panicle per plant (47.49), 50% flowering expressed in days (46.52), weight of 1000 seed (41.31) and plant height (39.89). Maximum heritability was found at weight of 1000 seed (94.16), 50% flowering time (86.02 days), maturity expressed in days (85.68) and plant height (66.02). Considering the character association and variability analysis, filled grain’s number, weight of 1000 seed, unfilled grain’s number/panicle, panicle/plant and plant height are essential yield components in rice. Emphasis should be given on these characters' select genotypes for next breeding program to enhance yield in transplanted Aman rice.
 
Key Words: Genetic advance, Heritability, Genotypic variance and Co-efficient of variance.

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MLA
Rahman, A. K. M. H. et al. “Genetic variability analysis of different yield contributing characters of cultivated T. Aman rice (Oryza sativa) varieties”. Journal of Bioscience and Agriculture Research, 27(01), (2021): 2258-2266.
 
APA
Rahman, A. K. M. H., Islam, M. M., Nadim, M. K. A., Akter, S. E., Alim, S. M. A. and Noor, M. M. A. (2021). Genetic variability analysis of different yield contributing characters of cultivated T. Aman rice (Oryza sativa) varieties. Journal of Bioscience and Agriculture Research, 27(01), 2258-2266.
 
Chicago
Rahman, A. K. M. H., Islam, M. M., Nadim, M. K. A., Akter, S. E., Alim, S. M. A. and Noor, M. M. A. “Genetic variability analysis of different yield contributing characters of cultivated T. Aman rice (Oryza sativa) varieties”. Journal of Bioscience and Agriculture Research, 27(01), (2021): 2258-2266.
 
Harvard
Rahman, A. K. M. H., Islam, M. M., Nadim, M. K. A., Akter, S. E., Alim, S. M. A. and Noor, M. M. A. 2021. Genetic variability analysis of different yield contributing characters of cultivated T. Aman rice (Oryza sativa) varieties. Journal of Bioscience and Agriculture Research, 27(01), pp. 2258-2266.
 
Vancouver
Rahman, AKMH, Islam, MM, Nadim, MKA, Akter, SE, Alim, SMA and Noor, MMA. Genetic variability analysis of different yield contributing characters of cultivated T. Aman rice (Oryza sativa) varieties. Journal of Bioscience and Agriculture Research, 2021 May, 27(01): 2258-2266.

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