Assessing the performance stability of new CMS lines through AMMI and GGE methods in sunflower

This study evaluated the stability of 21 CMS lines of sunflower across six environmental conditions. The genotype × environment interaction component accounted for the largest proportion of variation in seed yield, oil content, and other morphological traits. The first two interaction principal components accounted for the majority of variation, explaining days to 50% flowering (94.8%), days to maturity (90.7%), seed yield per plant (89.7%) and oil content (88.6%). The GGE biplot indicated that NDLA 21 for seed yield per plant and NDLA 6, NDLA 13 and NDLA 19 for oil content performed above average across the testing environments. The E3 and E5 environments are relatively discriminating for identifying stable lines in the study. Considering all the quantitative traits, the NDLA 21, NDLA 9, NDLA 17, NDLA 22, NDLA 5 and NDLA 20 CMS lines were identified as stable and can be used in the development of potential hybrids in sunflower.

Keywords:
CMS line × Environment interaction; AMMI; GGE; G × E; stability