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Line x tester analysis of combining ability in new genotypes of bivoltine silkworm (Bombyx mori)

Indian Agricultural Research Journals

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Title Line x tester analysis of combining ability in new genotypes of bivoltine silkworm (Bombyx mori)
 
Creator RAJALAKSHMI, E
CHAUHAN, T P S
THIAGARAJAN, V
LAKSHMANAN, V
KAMBLE, C K
 
Subject hybrid, tester, bivoltine silkworm, Bombyx mori, cocoon characters
 
Description A line X tester analysis was carried out, involving 8 newly evolved genotypes, 2 testers and 16 hybrids of bivoltinesilkworm (Bombyx mori L.) for assessing the combining ability in respect of cocoon yield by number and weight, single-cocoon weight, single-shell weight, shell ratio (%) and filament length. All the characters studied were controlled byadditive but predominantly by non-additive gene action, 'CNR 14' with positive general combining ability (gca) effectfor all the 6 characters studied proved the best general combiner, followed by 'CNR 12' and 'CNR 13' for 5 characters,'CNR 15' for 4 characters and 'CNR 16' for 3 characters, 'CNR 13' and 'CNR 16' for single-cocoon weight, 'CNR 12', 'CNR 14' and 'CNR 16' for single-shell weight, 'CNR 12' and 'CNR 15' for shell ratio (%)and 'CNR 14' for filament length were found to be the best general combiners with highly significant positive gca effects. 'CNR 16' X 'NB 4D2' was considered the best hybrid, as it recorded signiticant effects of specific combining ability (sea) for 3 characters out of the 6 studied.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-05-17
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/29925
 
Source The Indian Journal of Agricultural Sciences; Vol 67, No 7 (1997)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/29925/13500
 
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