GENE ACTION OF AGRONOMIC TRAITS IN RICE (Oryza sativa L.)

Authors

  • P. S. Biswas Plant Breeding Division Bangladesh Rice Research Institute Gazipur-1701
  • M. Enamul Haque Plant Breeding Division Bangladesh Rice Research Institute Gazipur-1701

DOI:

https://doi.org/10.3329/bjpbg.v20i2.17033

Keywords:

Rice (Oryza sativa L), Vr –Wr, gene action, agronomic traits, yield

Abstract

Six parent diallel cross without reciprocal was studied to investigate the genetic behavior of different agronomic traits in rice. The analysis of Wr-Vr graph showed that panicle length, thousand grain weight and grain yield per plant did not follow the additive-dominance model indicating epistatic gene action responsible for the expression of these traits. All other traits under the study were conditioned by overdominance gene action except grains per panicle, which was controlled by partial dominance. The Yr? (Vr + Wr)? graph revealed random distribution of dominant and recessive gene in expressing different traits in different parent, while correlation between parental mean and parental order of dominance indicated increasing effect of dominant gene for all the traits except days to heading and % spikelet sterility.

DOI: http://dx.doi.org/10.3329/bjpbg.v20i2.17033

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Published

2007-12-31

How to Cite

Biswas, P. S., & Haque, M. E. (2007). GENE ACTION OF AGRONOMIC TRAITS IN RICE (Oryza sativa L.). Bangladesh Journal of Plant Breeding and Genetics, 20(2), 31–36. https://doi.org/10.3329/bjpbg.v20i2.17033

Issue

Vol. 20 No. 2 (2007)

Section

Articles

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