香港木兰开花生物学研究  

Floral Biology and Pollen Germination of Magnolia championii

作　　者：刘坤良[1] 王亚玲[1,2] 张寿洲[3] 

机构地区：[1]棕榈园林股份有限公司,广东广州510627 [2]陕西省西安植物园,陕西西安710061 [3]深圳市中国科学院仙湖植物园,广东深圳518004

出　　处：《亚热带植物科学》2013年第4期293-296,共4页Subtropical Plant Science

基　　金：国家自然科学基金项目(30970180);国家星火计划项目(2010GA780012);陕西省科学院科技推广项目(2009K-05)

摘　　要：对香港木兰的花果期物候、花朵结构、单花期、开花特性及花粉在离体培养和人工授粉条件下的萌发现象进行观察和研究。结果表明,该种的开花习性限制蜂类昆虫在其柱头可授期内进入花内传粉,为专一的甲虫传粉植物;花粉萌发时间长、开花不集中、花期适逢雨季都影响到昆虫的传粉活动和有效受精。The structure and floral biology were studied in this paper, among which the pollen germination was observed. When all bracts split and fall, stigmas were usually receptive while the flower was still closed. Once the outer tepals were open, the inter-tepals were enclosed so closely that few insects could get inside the flower for pollination. The blooming period were from June to July when it was rainy season in Shenzhen. Few blossoms at the same time could not attract enough pollinators. All of above reason led to the low seed set.

关 键 词：香港木兰 开花习性 花粉萌发 

分 类 号：Q944[生物学—植物学]