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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (870) Last page : (878)
Article doi: http://dx.doi.org/10.18782/2320-7051.6055

Generation Mean Analysis for Yield and Quality Traits in Aromatic Genotypes of Rice (Oryza sativa L.)

Dilruba A. Bano1*, Sheo P. Singh1 and Showkat A. Waza2
1Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, BHU, Varanasi-221005
2Division of Genetics and Plant Breeding, MRCFC Khudwani, SKUAST-Kashmir
*Corresponding Author E-mail: dabgpb@gmail.com
Received: 1.12.2017  |  Revised: 26.12.2017   |  Accepted: 29.12.2017  


The present investigation in aromatic rice (Oryza sativa L.) was undertaken for studying the magnitude of gene action in three cross combination  for eight yield and nine quality traits  deploying generation mean analysis following six parameter model for parents (P1 and P2), F1, F2, BC1 and BC2 generations during three crop season. The results of the scaling tests revealed that the additive-dominance model was inadequate for all of the characters evaluated in all of the three crosses, suggested the existence of epistasis in the inheritance of these characters. Mean values of all the crosses revealed significant. Additive gene effect [d] had significant  contribution in all the crosses except Pusa Sugandh-5 × Type-3  for  days to maturity and main panicle length where as dominance [h] genetic effects was significant for all of the characters in three crosses except Kasturi Basmati × Type-3 for main panicle length and amylose content. Major contribution of duplicate epistasis was revealed by all the three crosses, for most of the character. Few crosses revealed complementary epistasis for the traits. The present study demonstrates the importance of additive, dominance and epistatic gene effects for the inheritance of almost all the yield as well as quality characters studied.

Key words: Rice, Scaling test, Generation mean, Quality traits

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Bano, D.A., Singh, S.P. and Waza, S.A., Generation Mean Analysis for Yield and Quality Traits in Aromatic Genotypes of Rice (Oryza sativa L.), Int. J. Pure App. Biosci.5(6): 870-878 (2017). doi: http://dx.doi.org/10.18782/2320-7051.6055