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Phenetic Classification for Photosynthetic Characters of Different Sugarcane Varieties

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF APPLIED & ENVIRONMENTAL BIOLOGY
Issue:
4
DOI:
10.3321/j.issn:1006-687x.2007.04.004
Key Word:
甘蔗;光合特性;数值分类;判别分析

Abstract: 对30个甘蔗基因型光合性状进行数值分类、主成分、聚类和判别分析研究认为,甘蔗基因型间光合性状存在较大差异;利用主成分分析选出3个主成分,方差累计贡献率达到98.5%,蒸腾速率、气孔导度为第一主成分的主导因子,而净光合速率和气孔导度分别为二、三主成分的主导因子;经系统聚类将30个基因型分为三大类,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4个光合参数,建立3个判别能力较高的判别模型.表5图1参22

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