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前言高产稳产是优良品种必具的重要特性。品种的生产能力是基因型(品种)在环境条件作用下的表现。生产实践中常常由于基因型与环境的互作,引起品种生产能力差异,互作效应越大,品种稳定性越低,反之品种稳定性越高。本文旨在用S·A·Ebornart和W·L·Ru-~ssell(1966)提出的估计品种稳定性参数的模式rij=μi+βiIj+δij,具体为:(一)、bi=(品种在环境作用下的回归系数)若bi=1品种比较稳定。bit>1表示低于平均稳定性。bi<1表示高于平均稳定性。(二)、对(品种的离回
Preface High and stable yield is an important feature that an excellent variety must possess. Variety production capacity is the genotype (variety) under the environmental conditions of the performance. In production practice, genotypes and the environment often interact with each other, causing differences in the production capacity of varieties. The greater the interaction effect, the lower the stability of varieties, and the higher the stability of varieties. The purpose of this paper is to use the model rij = μi + βiIj + δij for estimating the stability of breeds proposed by SA Ebornart and WL Rusellsell (1966), specifically: (1), bi = Regression coefficient under the action of environment) If bi = 1, the variety is stable. bit> 1 means below average stability. bi <1 means above average stability. (B), right (breed back