Record Details

Genetic analysis of resistance to late leaf spot in interspecific groundnuts

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/6632/
http://dx.doi.org/10.1007/s10681-013-0881-7
 
Title Genetic analysis of resistance to late leaf spot in interspecific groundnuts
 
Creator Janila, P
Ramaiah, V
Rathore, A
Rupakula, A
Kanaka Reddy, R
Waliyar, F
Nigam, S N
 
Subject Groundnut
 
Description Late leaf spot (LLS), caused by Phaeoisariopsis personata, is an important foliar fungal disease of groundnut (Arachis hypogaea L.), which causes significant economic losses globally to the crop. Inheritance of resistance to LLS disease was studied in three crosses and their reciprocals involving two resistant interspecific derivatives and a susceptible cultivar to refine strategy for LLS resistance breeding. The traits associated with LLS resistance, measured both in the field and under controlled conditions were studied following generation mean analysis. Results suggested that resistance to LLS is controlled by a combination of both, nuclear and maternal gene effects. Among nuclear gene effects, additive effect controlled majority of the variation. In JL 24 × ICG 11337 cross and its reciprocal only additive effects were important, while in JL 24 × ICG 13919 cross and its reciprocal, both additive and dominance effects contributed to the variation. Among digenic epistatic effects, additive × dominance interactions were significant. Additive–maternal effects were significant in both the crosses, while dominance–maternal effects also contributed to the variation in the crosses between the parents, JL 24 and ICG 13919. Due to significant contribution of additive effects of both nuclear and maternal inheritance to resistance to LLS, the parent, ICG 11337 would be a good donor in breeding programs. It would be worthwhile to use the resistance donor as female parent to tap maternal effects of resistance to LLS. Disease score is the best selection criterion in the field for use in breeding programs because of its high heritability and ease in measurement.
 
Publisher Springer
 
Date 2013
 
Type Article
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
Rights —
—
 
Identifier http://oar.icrisat.org/6632/7/Janila_P_etal_2013.pdf
http://oar.icrisat.org/6632/13/Euphytica_193_13%E2%80%9325_2013.pdf
Janila, P and Ramaiah, V and Rathore, A and Rupakula, A and Kanaka Reddy, R and Waliyar, F and Nigam, S N (2013) Genetic analysis of resistance to late leaf spot in interspecific groundnuts. Euphytica, 193 (1). pp. 13-25. ISSN 1573-5060