Application of AMMI model for analysis of genotype-environment interactions of rapeseed thousand seed weight

Abstract

Genetic potential of rapeseed for reaching high seed and oil yield can be jeopardized by multiple environmental factors that shape rapeseed performance and stability at different growing sites. A combination of high temperatures and drought during sowing make the germination and initial plant growth critical phases for successful rapeseed production in Serbia. Thousand seed weight is related to seed size, which affects seeding rate as well as speed of germination and emergence and is important to achieve high yield potential. The goal of this study was to study changes in thousand seed weight of rapeseed in response to different environments. Furthermore, we sought to determine genotypes that had high and stable thousand seed weight values. Additional goal was to implement additive main effects and multiplicative interaction model (AMMI) to partition genotype × environment interactions.