Madras Agricultural Journal
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GENETIC POTENTIALITIES OF SOME MEDIUM DURATION RICE VARIETIES

Abstract

An investigation was carried out with five high yielding medium duration rice varieties and three gall midge resistant genotypes to evaluate for their combining ability by line X tester analysis so as to utilise them as parents in breeding programmes. The parents viz., Co 45, ADT 38, ACM 19 and W 1263 were found to be better than others based on mean and gca effects. These can be utilised in multiple crosses to isolate segregants combining all the desired economic traits. The cross combinations viz, ADT 38 X ACM 19, ADT 38 X W 1263 and Co 45 X W 1263 would be useful for recombination breeding.

Keywords: Rice, Combining Ability, Breeding Value

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Tamil Nadu Agricultural University
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Madras Agricultural Students Union
Tamil Nadu Agricultural University
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Tamil Nadu, India.

ISSN : 0024-9602
eISSN : 2582-5321

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