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采用表型性状变异分析和聚类分析,对国内外不同地理来源的456份割手密资源13个性状进行评价,初步了解其遗传多样性特点,为解决种质创新与品种改良遗传基础狭窄问题提供思路。结果表明,456份割手密在株高、叶长、叶宽、锤度等多个性状都表现出了极高的遗传变异,多样性指数介于0.97～7.92之间;对嵌纹病、眼点病的抗病性及对金龟子的抗虫性变异范围广;国内外不同地理来源的割手密群间的遗传变异较大,以云南割手密群体多样性最丰富。聚类分析结果表明,国内外割手密资源聚成三大不同类群,云南独自为一大类,国外割手密被归为第二大类,其他为第三大类。各类群在植株生长特性及锤度方面具有极显著差异。
Based on the analysis of variance and cluster analysis of phenotypic traits, we evaluated the traits of 45 traits collected from 456 domestic and overseas geographically provenances and evaluated their genetic diversity. In order to solve the problem of narrow genetic basis for germplasm innovation and breed improvement Provide ideas. The results showed that there were extremely high genetic variation in 456 seedlings in plant height, leaf length, leaf width, brix and other traits, the diversity index ranged from 0.97 to 7.92. The disease resistance of eupatorium and the wide range of variation of insect pest resistance to beetle were found. The genetic variation among the cuttings of different geographical origins at home and abroad was larger, and the population diversity of the cut mouthed in Yunnan was the most abundant. The results of cluster analysis show that there are three different groups of domestic and international resources, with Yunnan being the largest category and the second one being the second category with the other being the third category. Each group has very significant differences in plant growth characteristics and brix.