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G × E interactions in QTL introgression lines of Spanish-type groundnut (Arachis hypogaea L.)

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Relation http://oar.icrisat.org/11534/
https://doi.org/10.1007/s10681-020-02613-x
doi:10.1007/s10681-020-02613-x
 
Title G × E interactions in QTL introgression lines of Spanish-type groundnut (Arachis hypogaea L.)
 
Creator Rathnakumar, A L
Manohar, S S
Nadaf, H L
Patil, S C
Deshmukh, M P
Thirumalaisamy, P P
Kumar, N
Lalwani, H B
Nagaraju, P
Yenagi, B
Patil, S S
Suryawanshi, J
Khatod, J
Kumbhar, C T
Kathmale, D K
Naik, K S S
Rajesh, P
Vemana, K
Sundaravadana, S
Premalatha, N
Variath, M T
Chaudhari, S
Radhakrishnan, T
Pandey, M K
Varshney, R K
Janila, P
 
Subject Groundnut
Genetics and Genomics
Legume Crops
 
Description Multi-environment testing at five locations
for rust and late leaf spot (LLS) resistance with
41 introgressed lines (ILs) bred using marker-assisted
backcross breeding in the genetic background Spanish-
type groundnut varieties identified significant
genotype, and genotype 9 environment interactions
(GEI) for LLS disease resistance and yield parameters.
Significant GEI effects suggest the need to identify location specific breeding lines to achieve gains in pod
yield and LLS resistance. The observed variable LLS
disease reaction among the ILs in part suggests
influence of background genotype on the level of
resistance. A breeding scheme with early generation
selection using molecular markers followed by phenotyping
for LLS, and multi-location testing of fixed
breeding lines was optimized to enhance selection
intensity and accuracy in groundnut breeding. The ILs,
ICGVs 14431, 14436 and 14438 with pooled LLS
score at 90 DAS of 3.5–3.7 were superior to respective
recurrent parent for pod yield, with early maturing
similar to recurrent parents. The pod yield advantage in ILs is attributed by more number of pods, besides
resistance to LLS that contributes to better filling.
 
Publisher Springer Verlag
 
Date 2020-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11534/1/2020-Rathnakumar%2C%20GEInteractionsInQTLIntrogressi.pdf
Rathnakumar, A L and Manohar, S S and Nadaf, H L and Patil, S C and Deshmukh, M P and Thirumalaisamy, P P and Kumar, N and Lalwani, H B and Nagaraju, P and Yenagi, B and Patil, S S and Suryawanshi, J and Khatod, J and Kumbhar, C T and Kathmale, D K and Naik, K S S and Rajesh, P and Vemana, K and Sundaravadana, S and Premalatha, N and Variath, M T and Chaudhari, S and Radhakrishnan, T and Pandey, M K and Varshney, R K and Janila, P (2020) G × E interactions in QTL introgression lines of Spanish-type groundnut (Arachis hypogaea L.). Euphytica (TSI), 216 (6). pp. 1-20. ISSN 0014-2336