山东主要分布区香椿种质资源种实性状差异性分析
Analysis on the Seed Traits Variation of Toona sinensis Roam Germplasm Resources in Main Distribution Areas of Shandong Province

DOI: 10.12677/BR.2020.93019, PP. 156-162

Keywords: 香椿，种质资源，表型性状，种实性状，差异性分析
Toona sinensis, Germplasm Resources, Phenotypic Character, Seed Traits, Variation Analysis

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Abstract:

为了解香椿种质资源在山东省各分布区之间的差异及其规律性，对山东省内各地的香椿进行实地考察和收集，利用针叶/种子扫描系统对香椿种实进行扫描测定、统计分析。研究结果表明：山东主要分布区香椿种实的表型性状在种源间具有差异显著性。种仁长、蒴果长的平均变异系数分别为13.5%、12.6%，种仁宽、蒴果宽的平均变异系数分别为11.4%、11.7%。香椿的蒴果长与宽、种仁长与种子宽是香椿表型性状呈现多样性的重要原因。香椿种仁的变异差异高于蒴果。聚类分析将山东省11个群体分成五个大类。与发芽试验的相关性分析表明，其发芽率、发芽势与蒴果长具有负相关，相关系数分别为0.736，0.694。
In order to understand the differences and regularity of Toona sinensis germplasm resources in var-ious distribution areas in Shandong Province, field surveys and collections of them were conducted, and WinSEEDLE was used to scan and determine the Toona sinensis phenotype with statistic analysis. The results showed that the phenotypic characteristics of Toona sinensis fruits in the main distribution areas of Shandong were significantly different among provenances. The average variation coefficients of seed kernel length and capsule length were 13.5% and 12.6%, and the average variation coefficients of seed kernel width and capsule width were 11.4% and 11.7%, respectively. Capsule length and width, kernel length and seed width of Toona sinensis are important reasons for the diversity of their phenotypic traits. The variation of Toona sinensis kernels was higher than that of capsule. The cluster analysis divided 11 populations in Shandong Province into five broad categories. Correlation analysis with germination test showed that its germination rate and germination potential were negatively correlated with capsule length, with correlation coefficients of 0.736 and 0.694, respectively.

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