摘要
目的:了解川贝母有性繁殖特性,为川贝母集约化良种繁育及品种选育奠定基础。方法:观测川贝母单花开花动态及雌、雄蕊发育过程;采用分期授粉方式与套袋实验测定柱头熟性和自然异交率。结果与结论:川贝母单花从现蕾至开花结束约需12d;花药散粉方式为纵裂式,散粉时间2~4d;雌蕊先成熟,中蕾期开花第3天柱头均有可授性,最佳授粉时期为花开放第2~3天;自然异交率为81.9%,属典型异花授粉植物。
Objective:To find the sexual reproduction characteristics and improve the seed propagation and new variety breed- ing of Fritillaria cirrhosa. Method: Flower, anther and pistil development were observed. Pollinating in different development period and bagging were used to measure stigma maturity situation and natural outcrossing rate. Results and Conclusion: It took 12 days from floral bud emergency to finished flowering. It was observed that anther opened in longitudinal direction and pollen was ejected for 2-4 days continuously. Pistil matured earlier,and chapiter could be fertilized from middle bud stage the third day after flowering, but the most suitable time was 2-3 day after the corolla opening. The natural outcrossing rate was 81.9%. F. cirrhosa is a typical xenial plant.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2010年第1期27-29,共3页
China Journal of Chinese Materia Medica
基金
国家高技术产业化专项(2005-1)
国家中医药管理局科技专项(2004ZX06-2)
关键词
川贝母
开花动态
授粉习性
Fritillaria cirrhosa
flowering behavior
pollination habit