【摘要】 本文选用1982年的60个太湖流域水稻常用杂交亲本品种(系)的7个主要农艺性状计算了多元相似系数,进行系统的数量聚类分析,分为7个类群。结果表明,类间差异较类内为大,利用类间差异大的浙江改良品种同江苏改良品种配组杂交,可望育成高产、稳产、优质的新品种。还采用不同品种在不同年份的资料,按秩序判别法判定和评价了新引入品种(系)的归属,是一种简便易行的方法。更多还原

【Abstract】 The coefficients of multivarite correlation were estimated in seven main agronomic characters of 60 usual crossing parents from the Taihu Valley. According to the similarity of phenotypic responses by systematic cluster analysis, these parents were classified into 7 types. Greater resemblance in the similar type was seen than between two different types. It is possible to select and breed the new varieties of high and stable yield and excellent quality with crossing between Jiangsu and Zhejiang improved vari-etes.In addition, all new kinds of the parents with the data of the different years were discriminated for the above types, by a simple but significant method.更多还原