枇杷品种资源的数量分类

对我国及日本的共50个枇杷品种,采用100个形态学及生理生化指标,这些指标分三个等级,给以不同的权重进行数量分类计算,当权重为6∶3∶1时,分类结果最佳.50个品种被聚成三大类群:一、果实较小,肉色偏淡,以江苏品种为主,浙江部分品种.二、果中等大,肉色偏深,以安徽品种为主,部分为浙、闽品种.三、福建产大果形品种,色深.从日本引入3个品种分别被划在第一、二群中.

A Numerical Taxonomy of Loquat Variety Germplasm

Total 50 varieties of Eriobotrya japonica Lindl,were classified using the numerical taxo-nomic method.The experimental materials and data were collected from Chinese five areas ofproducing loquat and research institute(Yuhang and Huangyian counties in Zhejiangprovince,Wuxian county in Jiangsu province,Shexian county in Anhui province,and FujianAgricultural Institute at Fuzhou city),and three varieties of them were introduced fromJapan and cultured in Huangyian county.The 100 characters selected by 10 specialists wereseparated into three degrees and were as the numerical taxonomic data.The different ratio ofweighted value of three degrees were calculated,the results indicated that it was best whenthe ratio was 6:3:1.Classified results was that 50 varieties were clustered into three marjor groups.The firstgroup was charactered by smaller fruit and lighter colour,mainly consisting of varieties ofWuxian county in Jiangsu province and most parts of varieties in Zhejiang province.The sec-ond group consisted of middle-sized fruit and darker colour varieties,including most parts ofvarieties in Anhui province,part varieties in Fujian province,and a smaller part varieties inZhejiang province.The third group,with large fruit and darker colour,these varieties grewand were cultured in Fujian province.Three varieties introduced from Japan were classifiedinto the first and second groups,respectively.