AUTHOR=Esan Vincent Ishola , Oke Grace Oluwasikemi , Ogunbode Timothy Oyebamiji , Obisesan Idowu Arinola 

TITLE=AMMI and GGE biplot analyses of Bambara groundnut [Vigna subterranea (L.) Verdc.] for agronomic performances under three environmental conditions

JOURNAL=Frontiers in Plant Science

VOLUME=Volume 13 - 2022

YEAR=2023

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2022.997429

DOI=10.3389/fpls.2022.997429

ISSN=1664-462X

ABSTRACT=The two most accustomed styles to analyze genotype by environment interaction (GEI) and estimate genotypes are AMMI and GGE Biplot. Therefore, the aim of this study was to find the winning genotype(s) under three locations, as well as to investigate the nature and extent of genotype × environment interaction (GEI) effects on Bambara groundnut (BGN) production. The experimentation was carried out in three environments with 15 BGN accessions using the randomized complete block design (RCBD) with three replications each in Ibadan, Osun and Odeda. Yield per plant, fresh seed weight, total number of pods per plant, hundred seeds weight, length of seeds and width of seeds were estimated. According to the combined analysis of variance over environments, genotypes and GEI both had a significant (p<0.001) impact on BGN yield. This result revealed that BGN accessions performed differently in the three locations. A two- dimensional GGE biplot was generated using the first two principal component analyses for the pattern of the interaction components with the genotype and genotype × environment interaction (GEI). The first two PCAs for yield per plant reckoned for59.9 in PC1 and40.1 in PC2. The genotypes that performed best in each environment based on the “which- won where” polygon were G8, G3, G2, G11, G6 and G4. They were also the vertex genotypes for each environment. Based on the ranking of genotypes, the ideal genotypes were G2 and G6 for YPP; G1, and G5 for FPW; G15 and G13 for TNPP; G3 and GG7 for HSW; G7 and G12 for LOS and G10 and G7 for WOS. G8 was recorded as the topmost yielding genotype. G8, G4, G7 and G13 were the high yielding and most stable across the environments, G11, G14 and G9 were unstable but they yielded above average performance while G14, G12, G15 and G1 were unstable and poorly yielded as their performances were below average. In Bowen was the most discriminating and representative environment and is classified as the superior environment. The above stable and high yielding accessions are recommended for farmers in the locations and as parental lines in breeding programs.