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Genetic base and coefficient of parentage of rice (Oryza sativa) varieties released in Kerala

Indian Agricultural Research Journals

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Title Genetic base and coefficient of parentage of rice (Oryza sativa) varieties released in Kerala
 
Creator SHIVKUMAR, SHIVKUMAR
RAO, L SUBBA
RAM, T
MAJUMDER, N D
PADMAVATHI, G
RAO, U PRASADA
KRISHNAIAH, K
 
Subject coetlicient of parentage, geoetic base, Kerala, Oryza sativa
 
Description An examination of the pedigrees of 29 rice (Oryza Sativa L.) varieties of hybrid origin, released in Kerala during'1966-95, revealed a narrow genetic base, as only 37 ancestors were used directly or indirectly in their developmentOut of 37 ancestors, 10 ancestors contributed 74.14% of the genetic base, Similarly. the cytoplasmic diversity wasalso limited, as 41.38% varieties could be 'traced back maternally to the same ancestor 'Ptb 10' ('Thekkancheera') and'thus probably carried its cYtoplasm, 'Dee Goo Woo Gen' (DGWG) was the most frequently appeared ancestor (96,55%)due to its dwarling gene (sdl), All the ,29 varieties except 'Kayamkulam I' were interrelated with an average coefficientof parentage of 0.137 for 406. combinations of 29 varieties.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-02-08
 
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/27145
 
Source The Indian Journal of Agricultural Sciences; Vol 68, No 1 (1998)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/27145/12354
 
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