ANALYSIS OF GENOTYPE X ENVIRONMENT INTERACTION IN TRITICALE LINES WITH AMMI AND PCA
2023
Hristo STOYANOV | Valentin BAYCHEV
In order to determine to what degree the different conditions affected the stability of certain triticale genotypes and towhat extent they determined the effect of the genotype x environment interaction, 12 lines of winter hexaploid triticalewere studied under contrasting growing periods. The results from the AMMI-analysis showed that the GxE interactionaccounted for 14.8% of the total variation of yield, while four significant principal components could explain 96% of itsvariance. The PCA analysis demonstrate that the first component related to the action of the meteorological conditionsduring 2015/2016 and 2019/2020 growing periods, and had the highest effect on the interaction. The AMMI-basedbiplot graphs revealed that the behavior of the local check Kolorit and lines G2 and G7 was the most stable accordingto the different periods affecting the genotype x environment interaction, while G1, G6 and G11 also had lowerinteraction with the conditions of the environment, but only during certain periods. Such characteristics allowedinvolving these lines in testing under the varied soil and climatic conditions of Bulgaria.
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