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Genotype-by-environment interactions for grain yield of Valencia groundnut genotypes in East and Southern Africa

OAR@ICRISAT

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Relation http://oar.icrisat.org/11368/
https://doi.org/10.21475/ajcs.19.13.12.p2039
doi:10.21475/ajcs.19.13.12.p2039
 
Title Genotype-by-environment interactions for grain yield of Valencia groundnut genotypes in East and Southern Africa
 
Creator Okori, P
Charlie, H J
Mwololo, J K
Munthali, T W
Kachulu, L
Monyo, E
Muitia, A
Mponda, O
Okello, D K
Makweti, L
Siambi, M
 
Subject Plant Breeding
Crop Yield
Groundnut
Genetics and Genomics
Legume Crops
Southern Africa
East Africa
 
Description Grain yield is a quantitatively inherited trait in groundnut (Arachis hypogea L.) and subject to genotype by environment interactions. Groundnut varieties show wide variation in grain yield across different agro-ecologies. The objectives of this study were to evaluate Valencia groundnut genotypes for yield stability and classify environments to devise appropriate breeding strategies. Seventeen multi-location trials were conducted in six countries, viz., Malawi, Tanzania, Uganda, Zimbabwe, Mozambique and Zambia, from 2013 to 2016. The experiments were laid out following a resolvable incomplete block design, with two replications at each location (hereafter referred to as ‘environments’) using 14 test lines and two standard checks. The additive main effects and multiplicative interaction (AMMI) analysis was conducted. Variation attributable to environments, genotypes and genotype × environment interaction for grain yield was highly significant (P
 
Date 2019-12
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11368/1/mwololo_13_12_2019_2030_2037.pdf
Okori, P and Charlie, H J and Mwololo, J K and Munthali, T W and Kachulu, L and Monyo, E and Muitia, A and Mponda, O and Okello, D K and Makweti, L and Siambi, M (2019) Genotype-by-environment interactions for grain yield of Valencia groundnut genotypes in East and Southern Africa. Australian Journal of Crop Science (13(12)). pp. 2030-2037. ISSN 1835-2707