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Journal of Bioscience and Agriculture Research 

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Research article: 
Genetic study and selection in F4 generation of rice (Oryza sativa L.)
 
Pangkaj Kumar Rai (a), Uma Kanta Sarker (a), A. K. M. Sajjadul Islam (b), Md. Asif Rahman (a) and Monjur Hasan (c)
 
aDept. of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur
bHybrid Rice Division, BRAC Agricultural Research and Development Centre, Gazipur
cVegetable Division, BRAC Agricultural Research and Development Centre, Gazipur, Bangladesh

​J. bios. agric. res. | Volume 09, Issue 01, pp. 768-774 | Available online: 25 May 2016
DOI: http://dx.doi.org/10.18801/jbar.090116.92

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• Abstract
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Title: Genetic study and selection in F4 generation of rice (Oryza sativa L.)
​Abstract: An attempt was made to study the variability in 25 F4 generation of T. Aman rice. Highly significant variations were obtained for all the characters studied. The highest mean and range value was observed for grain yield per meter square followed by number of filled grains per panicle, spikelet sterility (%) and 1000-grain weight. Highest genotypic variance was observed for grain yield per meter square followed by plant height, number of filled grains per panicle and spikelet sterility (%) whereas the highest genotypic coefficient of variation was recorded for spikelet sterility (%) followed by grain yield per meter square, panicle weight and plant height. Phenotypic variance was close to the corresponding genotypic variance for all the traits studied except plant height, panicle size, weight and branching habit. On the other hand, all the characters showed close phenotypic and genotypic coefficient of variation except panicle weight and spikelet sterility (%) which indicated additive gene action for expression of the characters. Considering mean, range and all genetic parameters selection could be performed on the basis of number of tillers per hill, number of panicles per hill, panicle length, number of filled grains per panicle, spikelet sterility (%), 1000-grain weight and grain yield per square meter for significantly improvement of rice yield.
Key Words: Heritability, Variability, Selection, F4 Generation and Rice (Oryza sativa L.)

​APA (American Psychological Association)
Rai, P. K., Sarker, U. K., Islam, A. K. M. S., Rahman, M. A. & Hasan, M. (2016). Genetic study and selection in F4 generation of rice (Oryza sativa L.). Journal of Bioscience and Agriculture Research, 09(01), 768-774.

MLA (Modern Language Association) 
Rai, P. K., Sarker, U. K., Islam, A. K. M. S., Rahman, M. A. & Hasan, M. "Genetic study and selection in F4 generation of rice (Oryza sativa L.)." Journal of Bioscience and Agriculture Research, 09.01 (2016), 768-774.

Chicago/Turabian
Rai, P. K., Sarker, U. K., Islam, A. K. M. S., Rahman, M. A. & Hasan, M. Genetic study and selection in F4 generation of rice (Oryza sativa L.). Journal of Bioscience and Agriculture Research, 09, no. 01 (2016), 768-774.

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