| 酸模叶蓼性状变异式样的统计分析及分类处理 |
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| 引用本文： | 杨继,汪劲武.酸模叶蓼性状变异式样的统计分析及分类处理[J].中国科学院研究生院学报,1991,29(3):258-263. |
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| 作者姓名： | 杨继 汪劲武 |
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| 摘 要： | 本文采用统计分析的方法，结合引种栽培试验，对酸模叶蓼(Polygonum lapathifolium L．)性状变异的实质和规律进行了研究，证明酸模叶寥植株的高度和节部膨大程度明显受环境条件影响，且两者的变异是独立的，没有相关性，因而不宜作为分类的依据。根据对原始文献和大量标本的考证，作者提出将酸模叶蓼与节蓼(P. nodosum Pers．)归并，并取消变种绵毛酸模叶蓼(P.lapathifolium var. salicifolium Sibth．)。
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| 关 键 词： | 酸模叶蓼 节蓼 性状分析 |
A Taxometric Analysis of Characters of Polygonum lapathifolium L. |
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| Yang Ji,Wang Jin-Wu.A Taxometric Analysis of Characters of Polygonum lapathifolium L.[J].Journal of the Graduate School of the Chinese Academy of Sciences,1991,29(3):258-263. |
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| Authors: | Yang Ji Wang Jin-Wu |
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| Abstract: | Polygonum lapathifolium L. is a morphologically variable and taxonomically com-
plicated group. The height of plants and the degree of nodal expansion greatly vary in differ-
ent habitats. In this work field observation and mass collection in different habitats of this
species were made. By means of biometric techniques, principal component analysis,
discriminant analysis, scatter diagram and histogram, supplemented by transplantation ex-
periment, it is revealed that the height of plants and the degree of nodal expansion of P.
lapathifolium are evidently affected by environmental conditions, and these two variables are
not correlated with, but independent from, each other. The results also show that the
indumentum on the lower leaf surface is not constant. Therefore all the characters are not re-
liable diagnostic ones and any taxonomic treatment based on these characters is not reasona-
ble. In this paper, P. nodosum Pers. is reduced as a synonym of P. lapathifolium L. and P.lapathifolium var. salicifolium Sibth. is also eliminated. |
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| Keywords: | Polygonum lapathifolium L P nodosum Pers Character analysis |
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