不同木瓜种质资源花期生物学性状及孢粉学研究  

Biological Characteristics and Pollen Morphology of Different Chaenomeles Species in Flowering Stage

作　　者：刘伟[1] 魏莹莹[1] 周洁[1] 王晓[1] 耿岩玲[1] 刘建华[1] 李圣波 

机构地区：[1]山东省分析测试中心/山东省科学院中药过程控制研究中心,山东济南250014 [2]山东亚特生态技术股份有限公司,山东临沂276017

出　　处：《中药材》2015年第6期1126-1130,共5页Journal of Chinese Medicinal Materials

摘　　要：目的：对不同木瓜种质资源花期生物学性状及孢粉学特征进行研究,为木瓜的种质资源鉴定以及新品种筛选提供理论基础。方法：采用田间生物统计与扫描电镜观察分析的方法对不同木瓜种质资源的生物学性状和孢粉学特性进行研究。结果：不同种的木瓜在花瓣的大小和雄蕊的数量上有显著差异。皱皮木瓜和日本木瓜花粉属于超长球形,极轴长与赤道轴长的比值〉2;光皮木瓜、毛叶木瓜和西藏木瓜极轴长与赤道轴长的比值为1.87~1.93,属于长球形;花粉粒极轴、赤道轴、极轴/赤道轴、表面纹饰和覆盖层穿孔等特征与木瓜种质亲缘关系密切。结论：木瓜植物学特征结合其孢粉学性状可作为鉴别不同种木瓜及木瓜变异品种归属的分类依据。Objective ：The biological characteristics and pollen morphology of different Chaenorneles species in the flowering stage were studied,in order to provide a theoretical basis to discriminate the germplasm resources and new cultivars selection. Methods：Field research and scanning electron were used for the research of the biological characteristics and pollen morphology of Chaenomeles species. Results ：The differences were significant both in the size of petal and the quantity of stamen in different kinds of Chaenomeles species. The pollen of Chaenomeles speciosa and Chaenomeles japonica were perprolate, and the ratio of the length between poles and di- ameter of the equator was more than two. The ratio of Chaenomeles sinensis, Chaenomeles cathayensis and Chaenomeles thibeticae ranged from 1.87 to 1.93 and they were prolate. The characteristics, such as the length between poles of pollen grain, diameter of the equator, the ratio of the length between poles and diameter of the equator, surface ornamentation and rectum perforation, had close genetic rela- tionship with Chaenomeles species. Conclusion：Biological characteristics and pollen morphology could be the value reference to identify different kinds of Chaenorneles species.

关 键 词：木瓜 种质资源 孢粉学 生物学性状 电镜 

分 类 号：R282.2[医药卫生—中药学]