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Genetic characterization of resistance to brown leaf spot caused by Drechslera oryzae in some wild rice (Oryza sativa) lines

Indian Agricultural Research Journals

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Title Genetic characterization of resistance to brown leaf spot caused by Drechslera oryzae in some wild rice (Oryza sativa) lines
 
Creator GOEL, R K
BALA, RITU
SINGH, KULDEEP
 
Subject Rice; Oryza sativa; Oryza nivara; Resistance; Drechslera oryzae; Brown leaf spot
 
Description Sources of resistance against Dreschlem or).:ae (Breda de Haan) Subram. and Jain (syn. Heb~i~?thosporirroant zne, Bipolaris otyne) causing brown leaf spot disease severely affecting both quality and yield in the cultivated rice 01y:a sarivn L. (AA genome ) are rare. Hence 4 wild rice lines, namely 'CR 100117', 'CR 100140', 'CR 100142' and 'CR 100142 A' belonging to Oryza nivarn Sharma et Shastry (AA genome) consistently resistant to brown leaf spot in Ludhiana (Punjab) were genetically characterized under artificial epiphytotic conditions in the field. Analysis of brown leaf spot reaction of different segregating populations of the crosses of 2 susceptible commercial 0, sntiva cultivars 'PR 114' and 'Pusa 44' with the above 4 0. nivara revealed quantitative nature of inheritance of this trait. Additive, dominant as well as epistatic gene interactions were observed. Both fixable and non-fixable gene effects were important for the expression of brown leaf spot resistance. For the development of rice cultivars with durable resistance to brown leaf spot, the marker assisted selection (MAS) for the accumulation of polygenes is suggested. 
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2011-01-10
 
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/3314
 
Source The Indian Journal of Agricultural Sciences; Vol 76, No 11 (2006)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/3314/1346
 
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