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Inheritance of high-density grain index in an upland rice (Oryza sativa) cross

Indian Agricultural Research Journals

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Title Inheritance of high-density grain index in an upland rice (Oryza sativa) cross
 
Creator CHAUHAN, J C
 
Subject high-density grain index, inheritance, Oryza sativa, upland rice
 
Description The components of gene effects for high-density grain index were studied in a cross 'Khaolo 33' x 'Kalinga III' of rice (Oryza sativa L.) following 5- parameter model of Hayman, utilizing means of P1, P2, F1, F2 and F3 generations. The high-density grain index showed high heterobeltiosis along with high inbreeding depression, indicating the role ofdominance gene action in the inheritance of this trait. The additive and dominance interactions were important, but thischaracter was largely governed by non-additive gene action. Complementary epistasis was prevalent. The preponderanceof dominance x dominance type of gene effect restricts the scope of early-generation selection. The progeny selection in F3 or F4 generation may be useful for the improvement of this character, whose association with grain weight, size and shape was not consistent in F2 and F3 generations.
 
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/30052
 
Source The Indian Journal of Agricultural Sciences; Vol 67, No 10 (1997)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/30052/13564
 
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