女贞不同种源种子特性研究

为了了解女贞不同种源种子差异，为良种选育研究提供理论基础。笔者分别对女贞自然分布区14个种源种子的千粒重、干重、纵径、横径、含水量发芽指标等特性指标测定，并进行统计分析。结果表明：不同种源种子的表型性状、质量指标等差异显著，其中发芽率最高的种源为成都，达到83.67%，最低为南昌，仅有20.33%；千粒重最大的是桂林，为34.85 g，最小的是成都，为21.57 g；种子发芽率、发芽势分别与经度、年降水量呈显著负相关，种子干重、横径与年均相对湿度显著负相关，纵径与年均相对湿度呈极显著负相关，横径与纬度显著负相关，纵径与年均日照呈正相关。并利用种子特性聚类分析将种源初步划分为3个种源区。

Research on Seed Characteristics of Ligustrum lucidum Ait from Different Provenances

The study aims to get the information about seeds of Ligustrum lucidum Ait from different provenances and provide a theoretical basis for the selective improved variety. The author determined the seed characteristics of 14 provenances of Ligustrum lucidum Ait, and the results were statistically analyzed. The results showed that the seeds from different provenances were different greatly in phenotypic traits or quality indicators. The seeds of Chengdu had the highest percentage of germination, which reached 83.67%. Seeds of Nanchang had the lowest, only 20.33%. The thousand seed weight of Guilin reached the maximum of 34.85 g, while the smallest was seeds of Chengdu, only 21.57 g. What’ s more, there was a negative correlation between germination percent, germination potential and the longitude and annual precipitation of provenances. In addition, it showed a negative correlation of dry weight, width of seeds and annual average relative humidity, a negative correlation between seeds width and latitude as well, while a positive correlation between seed length and annual average sunshine duration. And on this basis, this paper divided provenances into 3 groups reliminarily with cluster analysis.