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沙棘果实和种子表型性状及变异分析

Analysis on Variation and Phenotypic Characters in Berries and Seeds of Hippophae rhamnoides

  • 摘要: 为探究辽西地区不同品种沙棘果实和种子的表型性状及其变异程度,采用描述性统计分析、差异显著性分析、相关性分析和聚类分析等方法对不同品种沙棘果实及种子表型性状进行分析。结果表明,20个品种沙棘果实百果重为27.08~73.18 g,果实纵径为6.51~14.07 mm,横径为6.81~9.16 mm,果柄长为2.00~4.77 mm;种子千粒重为10.84~22.77 g,种子长度、宽度、厚度分别为4.01~7.04 mm、1.99~2.87 mm、1.40~2.07 mm。11个性状指标变异系数为8.84%~26.56%,果实百果重和果实纵径、横径、果形指数、果柄长、种子千粒重、种子长度、宽度之间呈极显著或显著正相关关系。通过聚类分析可将20个沙棘品种划分为三大类,即小型果沙棘、中型果沙棘和大型果沙棘,又将大型果沙棘细分为大果型沙棘和大籽型沙棘。

     

    Abstract: To explore the phenotypic traits and their degree of variation of different varieties of Hippophae rhamnoides berries and seeds in the western Liaoning region, descriptive statistical analysis, significant difference analysis, correlation analysis, and cluster analysis were used to analyze phenotypic traits of different varieties of Hippophae rhamnoides berries and seeds. The results showed that the hundred berries mass was from 27.08 to 73.18 g, longitudinal diameter was from 6.51 to 14.07 mm, transverse diameter was from 6.81 to 9.16 mm, length of stalk was from 2.00 to 4.77 mm. The 1 000 seed weight was from 10.84 to 22.77 g, and the three indexes of seed length, width and thickness were from 4.01 to 7.04, from 1.99 to 2.87 and from 1.40 to 2.07 mm, respectively. The coefficient of variation of 11 personality indexes was from 8.84% to 26.56%. The hundred berries mass of Hippophae rhamnoides had extremely significant or significant positive correlation with longitudinal diameter, transverse diameter, berry shape index, stalk, 1 000-seed weight, seed length and seed width. Through cluster analysis, 20 Hippophae rhamnoides varieties could be divided into 3 categories, namely, small berry Hippophae rhamnoides, medium berry Hippophae rhamnoides and large berry Hippophae rhamnoides. The large berry Hippophae rhamnoides could be subdivided into large berry type seabuckthorn and large seed type of Hippophae rhamnoides.

     

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