摘要
运用单因素方差分析研究了巫山淫羊藿(Epimedium wushanense)开花时间对花蜜分泌、有效传粉者活动及结实性的影响。结果表明:(1)开花时间对巫山淫羊藿花蜜常备量和含糖量的影响极其显著。3个种群早期花蜜常备量较高,而花蜜含糖量在晚期较高。(2)开花时间对有效传粉者行为也具显著影响。一天中,有效传粉者的访花活动主要集中在中午;在整个花期进程中,晚期有效访花频率明显大于早期。(3)开花时间对巫山淫羊藿结实率、果实种子数及果实种子败育率的影响均显著,其中早期和中期的结实率和果实种子数大于晚期;而果实种子败育率则在晚期较高。因此,人工栽培巫山淫羊藿应注意花期调控,并选择早期果实进行实验或育种,其效果更好。
The effect of flowering time on nectar secretion, effective pollinators activities and fruit set in Epimedium wushanense were revealed by One-way ANOVA. Among the three stage of flowering, the differences in nectar stand- ing crop and sugar content of E. wushanense were very remarkable. In this three populations, the nectar standing crop in the initial stage was higher than that in other stages, but the sugar content of nectar was higher in the last stage. The results indicated that the activities of effective pollinators were influenced by the flowering time significantly. During a day, the activities of effective pollinators were mainly concentrated in the noon. At the same time the visiting frequency of effective pollinators in last stage was higher than that in the initial and middle stage. It was also indicated that the fruit set, the seed number and percentage of seed abortion per fruit of E. wushanense were in- fluenced by the flowering time significantly. During the initial and the middle stage of flowering, the fruit set and the seed number per fruit were bigger than that in the last stage of flowering. But the percentage of seed abortion per fruit was higher in the last stage. So, in order to make work more effective, we should choose the fruits of E. wushanense in the initial of flowering stage for experiments and breeding, and pay attention to the flowering regulation in artificial cultivation.
出处
《植物分类与资源学报》
CAS
CSCD
北大核心
2012年第5期471-477,共7页
Plant Diversity
基金
四川省科技厅应用基础研究项目(2008JY01580)
重点实验室开放基金项目(XNYB09-04)
四川省重点学科项目(SZD0420)
西华师范大学科研启动项目(11B016)
关键词
巫山淫羊藿
开花时间
花蜜分泌
有效传粉者
结实
Epimedium wushanense
Flowering time
Nectar secretion
Effective pollinators
Fruit set
