高产粳稻品种源库特征及评价体系的研究

Studies on Characteristics and Evaluation of Source-Sink in High-Yield Japonica Rice

本研究对76个高产粳稻品种的叶面积指数等13项生理指标进行测定,研究高产粳稻品种的源库特征及评价体系。利用主成分分析从13个性状中确定了5个关键指标。采用动态聚类分析方法将76个水稻品种划分为源库互作型、增库增产型、增源增产型和源库饱和型4种库源类型。利用判别函数分析方法以5个关键性状作为变量建立了高产水稻品种源库种质资源评价体系,通过检验发现该判别函数的判别精度达到98.9%。该结果为今后高产粳稻品种源库类型的评价提供了理论依据。

In order to study source-sink characteristics and establish standardized evaluation system of source-sink type for high-yield rice varieties, thirteen physiological indices of 76 high-yielding rice varieties were measured.Five key indices were identified from 13 traits by principal component analysis. Using dynamic clustering method,76 rice varieties were classified into four types, including source-sink interaction type, increase production by increase sink type, improving production by increasing source type, and saturated source-sink type. The discriminant function for evaluating the source and sink of high-yield rice varieties was established with five key indicators as variables. Through verification, it is found that the discriminant accuracy of the discriminant function is 98.9%. The results provide a theoretical basis for the evaluation of source-sink types of high-yielding japonica rice varieties.