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当前位置: 首页 > 文章 > 天台山云锦杜鹃的开花与结实特性 园艺学报 2006,33 (1) 101-104
Position: Home > Articles > The Flowering and Fruit Set Features of Rhododendron fortunei in Tiantai Mountains Acta Horticulturae Sinica 2006,33 (1) 101-104

天台山云锦杜鹃的开花与结实特性

作  者：
边才苗;金则新
单  位：
台州学院生命科学与医药化工学院
关键词：
云锦杜鹃;种群;花生命周期;结实
摘  要：
对天台山云锦杜鹃3个种群的花芽发育、花部形态、花生命周期及结实状况等进行野外定位观测,结果显示:云锦杜鹃于5月初开花,花期接近25 d,花生命周期6 d左右,其中黄山松林中的云锦杜鹃种群花生命周期最短,平均为5.8 d,主要原因是光照时间长,湿度相对较低,花形态较小。云锦杜鹃的结实率不高,结籽率很低,观云洞种群、黄经洞种群和永字亭种群的平均结籽率分别为35.05%、32.51%和31.93%,且花生命周期与结实率及结籽率呈显著负相关。另外,由于光照和湿度等环境因素的差异,种群间的结籽率也有显著差异。
译  名：
The Flowering and Fruit Set Features of Rhododendron fortunei in Tiantai Mountains
作  者：
Bian Caimiao and Jin Zexin(School of Life Sciences and Pharmaceutical and Chemical Engineering,Taizhou College,Linhai 317000,China)
关键词：
Rhododendron fortunei;Population;Life span of flower;Fruit set
摘  要：
Flowering and fruit set features are important to understanding the reproduction of plants.This paper,by observing the characteristics of florescence and fruit set of three populations of Rhododendron fortunei in Tiantai Mountains,studied the flower bud developing,morphology of flower,flowering dynamics,life span of flower,the fruit set ratio and seed set ratio and their influenced factors.The results were as follows: The flower buds,formed after flowering,get its shape after a fast development from August to September,and remain through all the winter,the overwintering buds resurrect in the April of next year and form cyme-botrys,containing 6 to 12 flowers.The flowering phase of three populations of R.fortunei is about 25 days with a 6-day life span of each flower.Affected by a strong illumination and a high air humidity,R.fortunei in Pinus taiwanensis forest got a smaller flower and a shorter life span of 5.8 days averaged than the others.The fruit set ratio and seed set ratio of R.fortunei,populations in Guanyundong,Huangjingdong and Yongziting,are very low.Both the fruit set ratio,65.84%,62.64% and 62.17% respectively,and the seed set ratio,35.05%,32.51% and 31.93% respectively,are notably infected by the life span of flower.The shorter the life span,the higher the fruit set ratio and seed set ratio.Also the seed set ratio was affected by(illumination) and air humidity and resulted in a notable difference in the three populations.

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