管花肉苁蓉花序不同部位种子质量与有效积温的关系.pdfVIP

中国农学通报 2009,25(09):70-73 Chinese Agricultural Science Bulletin 管花肉苁蓉花序不同部位种子质量与 有效积温的关系 闫 妍，郭玉海 （中国农业大学农学与生物技术学院中药材研究中心，北京100193） 摘 要：为探讨有效积温对管花肉苁蓉花序不同部位种子质量的影响，测定了花序不同部位蒴果发育的 有效积温及其种子的大小、千粒重和萌发率。结果表明：管花肉苁蓉花序不同部位蒴果发育所需的有效 积温有显著差异，中部和基部有效积温显著高于上部；中部蒴果中直径≥0.7 mm 种子占总量的20.64% ， 显著高于基部和上部的15.67%和15.62% ；中部蒴果种子千粒重(0.0343 g)显著高于基部(0.0263 g)和上 部(0.0210 g) ；中部蒴果种子萌发率为78.88% ，而基部和上部种子萌发率仅为56.67%和42.22% 。因此， 不同的有效积温是导致管花肉苁蓉花序基部和中部种子质量高于上部种子质量的重要因素之一。 关键词：管花肉苁蓉；有效积温；种子；萌发率；千粒重 中图分类号：S567.9 文献标识码：A RelationshipbetweentheQualityofSeedfromDifferentPositionsontheCistanche tubulosa InflorescenceandtheEffectiveAccumulatedTemperature Yan Yan, Guo Yuhai (ChineseMedicinalHerbsResearchCenter,CollegeofAgronomyandBiotechnology, ChinaAgricultureUniversity, Beijing 100193) Abstract: To explore the effect of effective accumulated temperature on the quality of seed from different positions on the Cistanchetubulosainflorescence, the effective accumulated temperature of the development of capsule, weight per thousand seeds, size and germination of seed from different positions on the inflorescence were measured. The results indicated that it was different effective accumulated temperature of capsule from different positions on the inflorescence, the effective accumulated temperature of the middle and basal capsule was higher than that of the upper capsule. The ratio with the seed size bigger than 0.7 mm in the middle capsule was 20.64%, and it was significantly higher than that in basal (15.67%) and upper (15.62%) capsule. Weight per thousand seeds of the seed in m