Indian Society of Genetics & Plant Breeding

GENETICS OF RATOONING ABILITY IN RICE (ORYZA SATIVA L.)

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In the present investigation, 18 Fl hybrids in Oryza sativa L. were studied for their
ratooning ability. The results of scaling tests revealed the presence of epistasis. Partial
dominance was prevailing in majority of the crosses. Inbreeding depression was low.
Moderate to fairly high degree of heritability (50.2% to 81.2%) and genetic advance (9.30/.
to 29.8%) were observed. Most of the crosses showed additive (d) and additive Xadditive
(iHypes of gene effects. Thus, the ratooning ability is governed by additive gene action.
 

Keywords: Ratooning ability, heritability, additive genes, additive x additive gene .action.

Info

Year: 1996
Volume: 56
Issue: 4
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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