Indian Society of Genetics & Plant Breeding

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IDENTIFICATION AND UTILISATION OF WIDE COMPATIBILITY GENE IN RICE

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A set of indica and tropical japonica genotypes were screened for wide compatibility
by crossing them with suitable japonica and indica testers. The genotypes showed
variation for wide compatibility. Dular and 9314 Were found to be the ideal indica
and tropical japonica 'WC' lines respectively. Pusa 743 and 9313 failed to qualify
as wide compatible varieties. Wide compatible varieties when used as male parents
exhibited positive effects in their hybrids in respect of some traits like number of
spikelets and spikelet fertility. On account of many advantages, it is found desirable
to develop tropical japonica CMS lines and TGMS lines. To exploit the positive
effects of WC parents from male side, possibilities of developing both parents with
'WC' gene are suggested to develop heterotic indica Itropical japonica hybrids.
 

Keywords: Rice, wide compatibility, Heterosis, Inter sub-specific hybrids

Info

Year: 1999
Volume: 59
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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