甘蔗不同品种光合特性比较及其聚类分析

 利用CI-301PS光合作用测定系统测定152个甘蔗品种资源的光合参数。结果表明，甘蔗品种间光合性状存在较大差异。进一步对152个甘蔗品种资源的光合性状进行聚类和判别分析，将152个品种分为7大类，在聚类分析基础上用判别分析选出对甘蔗光合性状数值分类有显著影响的3个光合参数，建立了7个判别能力较高的判别模型。

Comparison and Cluster Analysis of Photosynthetic Characters of Different Sugarcane Varieties

By using CI-301PS photosynthesis system, the main photosynthetic parameters of 152 sugarcane genotypes were measured. The results showed that differences of photosynthetic characters among the tested varieties were extreme significant. Cluster and discrimination analysis techniques were used to study photosynthetic characters of 152 different varieties of sugarcane. Cluster analysis was used to classify the photosynthetic characters of sugarcane varieties and 152 different genotypic varieties of sugarcane were classified into 7 groups according to these indexes, then by means of discrimination analysis, photosynthetic character indexes (Pn, E, WUE) had significant effects on classification were selected and 7 discrimination models with better distinguishing abilities were established.