Abstract:

The stability of variety yield traits is an important factor in the process of castor variety breeding and promotion. The general linear regression equation can only explain a small part of the interaction due to the interaction between genotype of variety and environment. Addition main effects and multiplication interaction (AMMI) model not only response interaction variance, but also accurately analyze the stability of varieties. The yield stability of four castor varieties was analyzed with AMMI model and biplot using data from multi-point tests in 2008-2009, and then evaluated stability and adaptability of varieties.