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GENOTYPE-BY-ENVIRONMENT INTERACTION FOR SEED YIELD PER PLANT IN FABA BEAN: COMPARISON OF DIFFERENT STATISTICAL APPROACHES

Research Authors
M.B. Ali and H.S. Abbas
Research Abstract

Faba bean (Vicia faba L.) is an indispensable food in Egypt. Expected heat events during growing season diminishes both yield and quality. Hence, identifying stable genotypes is paramount for faba bean breeders. Seed yield per plant for a set of sixteen-faba bean genotypes were evaluated under favorable, heat and drought conditions in two locations across two growing seasons. We used various statistical approaches to detect stable genotypes across diverse environmental conditions. The broad-sense heritability showed moderate value (0.44) for seed yield per plant. Environment, genotype and genotype-by-environment interaction explained 66%, 9% and 25% of the treatment sum of squares, respectively. According to additive main effects and multiplicative interaction (AMMI) stability value, the two genotypes 11 and 5 were stable and yielded more than the average of all genotypes. Based on sites regression analysis (SREG) stability value, genotype 11 and 7 were stable and yielded more than the average. Genotype 8 showed the most stable performance and yielded lower than the average of all genotypes. The Spearman’s rank correlations among different stability parameters were variable. The current study might be beneficial to faba bean breeders to detect stable and high yielding genotypes. These genotypes can be used in the breeding programs to develop superior varieties that can stand against diverse environmental conditions.

Research Department
Research Journal
Egypt. J. Plant Breed. 22(5):1047– 1073 (2018)
Research Member
Research Publisher
Egypt. J. Plant Breed (Cairo uni)
Research Rank
2
Research Vol
22(5)
Research Website
NULL
Research Year
2018
Research Pages
1047– 1073