GENOTYPE BY ENVIRONMENT INTERACTION AND YIELD STABILITY OF MAIZE HYBRIDS EVALUATED IN CAMEROON

Liliane Ngoune TANDZI; Vernon GRACEN; Eddy NGONKEU; Martin YEBOAH

Volume : IV, Issue : XI, November - 2015

GENOTYPE BY ENVIRONMENT INTERACTION AND YIELD STABILITY OF MAIZE HYBRIDS EVALUATED IN CAMEROON

Liliane Ngoune Tandzi, Vernon Gracen, Eddy Ngonkeu, Martin Yeboah

Abstract :

The objectives of this study were to determine the genotype by environment effect on yield of 121 maize hyids evaluated in nine environments, isolate the mega–environments and identify the most high–yielding and stable maize hyids across the nine environments. The results indicate that the genotypes contributed 4.03% to the variance partition from the total sum of square while the combination of the IPCA 1 and IPCA 2 explained 69.76% of the G x E interactions. The study environments were grouped into three mega–environments. Eight most stable hyids out–yielded the best hyid check by 20% and could be potential hyids to be released after on farm trials.