品种区域试验主要决选指标及其参数的研究——Ⅲ.适应性与稳定性

Study on the Main Decision Selection Criteria and its Parameters in Cultivar Reglinal Tests Adaptability and Stability

文章讨论了适应性与稳定性的概念划分,认为前者内涵较广,应包涵后者,而决不是相反。对品种区域试验中反映的品种适应性,本文提出至少可分解为适应类型、适应范围、适应程度三个层次;稳定性是后一层次内容之一。本文建议:1.以信息内涵丰富,与环境值(?)的回归系数b表述适应类型,并作为适应性的主要表述参数;2.借助(?)估算,用对照品种的。两环境界值(?)～(?)表述适应范围;3.对能部分说明适应程度的稳定性,用互作变异系数CV_(vu)CV_(vw),或产量变异系数CV表述。为此,并对多种稳定性表述参数的优选进行了相应论证。

The concept distinctness of adaptability and sr(?)lity were discussed in the present paper, it is considered that the sense of the former one is broader than the latter one, the latter one should be contained in the former one, it is not on the contrary. The varietal adaptability in the varietal regional test can be analyzed at least the three parts, i, e, adaptive type, adaptive range, and adaptive degree, the stability is the one of the content of the last one. It is suggest in the present paper that 1. The adaptive type can be described by regression coefficient b of environment value (?)j, which is rich in information content, and act as main described parameter of adaptability; 2. Depend on the evaluation Y, the adaptive range can be described by two enviromental boundary value (?)j_1～(?)j_2 of check variety; 3: The stability '…which may be used to explain partially to…' adaptive degree can be described by interaction variability coefficient CV_(vu) and CV_(vw), or Yield variability coefficient CV. Hence, the corresponding argument was carried on optimization of the described parameters in several stabilities.