目的 考察花果数量性状在地黄种质资源鉴定中的应用价值。方法 选用 7个典型的栽培品种,在相同条件下栽培,于花期和果期测量 11个性状的大小,并对测量数据进行统计学处理。结果 发现所选性状在品种间存在显著差异。在花冠和花萼长宽方面,邢疙瘩和千层叶与其他品种区别显著,邢疙瘩表现为宽而短,而千层叶则最为短小。经对 17类数据进行聚类分析发现,千层叶与其他品种相距最远;北京 1号与小黑英最为接近,二者与七顶葵比较相似。另外,还发现部分花果数量性状之间存在一定的相关关系。结论 花果数量性状在地黄种质资源鉴定中具有较大的应用价值,同时也揭示了地黄种质资源的遗传多样性。

Object To investigate the quantitative characters of flower and fruit and their significance in the identification of the germplasm of Rehmannia glutinosa Libosch.Methods Seven typical cultivars were planted in the same condition, and at efflorescence and fructescence 11 characters were measured.Results The characters were significantly different among cultivars according to the result of ANOVA.'Xinggeda' was distinguishable for its wider and shorter corolla and calyx.'Qiancengye' was unique for its smallest corolla and calyx.The result of hierarchical cluster analysis revealed that 'Qiancengye' was firstly distinguished from the other cultivars.'Beijing 1' and 'Xiaoheiying' most resembled each other, and both of them were similar to 'Qidingkui'.In addition, the correlation analysis indicated that some characters were linearly related to each other at P≤0.01 level.Conclusion The results suggested that the quantitative characters of flower and fruit were of great value in the identification of germplasm of R.glutinosa, and demonstrated the genetic diversity of the species at the same time.

国家自然科学基金重点项目(39930220)