INHERITANCE OF PROTEIN PER GRAIN IN RICE

Published on Feb 09, 2020 12:03 PM

Genetic control of the protein per grain (PPG) in rice (Oryza sativa 1.) was investigated
through nine-parent half-dialld analysis. Overall partial dominance of high PPG over the
low was noted. However, at an individual loci, both the magnitude and the direction of
dominance were inconsistent due to unequal distribution of dominant and recessive
alleles,as well as the alleles with increasing and decreasing effects, in the parents. The
dominant alleles were in excess of recessive, and a separate study had indicated that only
the parents with the shikimatedehydrogenase-1 2 (Sdh.12) allozyme had an excess of alleles
with increasing effects on PPG. Due to insignificant environmental variance recorded and
the additive genetic component being larger than the dominance component, the
heritabiltiy estimates both in broad sense (0.97) and narrow sense (0.71) were high,
suggesting usefulness of early generation selection for the genetic improvement of PPG.

Keywords: Oryza sativa, diallel analysis, seed protein content, protein per grain, heritability.

Info

Year: 1991
Volume: 51
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

V. V. SHENOY, D. V. SESHU AND J. K. S. SACHAN

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