Deceit pollination and the effect of deforestation on reproduction in dioecious Schisandra sphenanthera (Schisandraceae) in central China
Deceit pollination and the effect of deforestation on reproduction in dioecious Schisandra sphenanthera (Schisandraceae) in central China
复制标题
中国中部地区雌雄异株华中五味子的欺骗授粉及森林砍伐对繁殖的影响
DOI：
10.1111/j.1759-6831.2011.00171.x
复制
发表时间：
2012-01-01
影响因子：
3.7
通讯作者：
Wang, Xiao-Fan
中科院分区：
文献类型：
--
作者：
Du, Wei;Huang, Lan-Jie;Wang, Xiao-Fan
五味子（Schisandra sphenanthera，雌雄异株）的果实被用来生产重要的中药南五味子。然而，长期的开发利用和栖息地的破坏使这些植物在自然界受到威胁。了解sphenanthera的生殖生物学对制定保护策略至关重要。在河南和湖北的鸡公山和金鸡谷进行了野外研究。分析了这些试验点的生殖生物学，包括种群结构、传粉、花形态和自然坐果。两个地点的11个种群均为男性偏倚。主要访花昆虫为瘿蚊（双翅目，瘿蚊科）和蓟马（黄蓟马，蓟马目）。花访客排斥实验和花粉负荷分析表明，瘿蚊是主要的传粉媒介。花粉是瘿蚊唯一的花奖励。雌花用欺骗来吸引传粉者。采伐迹地的自然坐果率显著低于采伐迹地，采伐迹地的坐果率明显低于采伐迹地，采伐迹地的坐果率明显低于采伐迹地。这表明，在受到干扰（或砍伐）的生境中，金凤花和传粉昆虫的生命周期是脆弱的。
The fruits of Schisandra sphenanthera (dioecious) are used to produce Nan-Wuweizi, an important Chinese medicine. However, long-term exploitation and habitat destruction have threatened these plants in nature. Knowledge of the reproductive biology of S. sphenanthera is essential to help formulate a conservation strategy for these plants. Field studies were conducted at Jigong Mountain (JGM) and Jinji Valley (JJV) in Henan and Hubei Provinces, China. The reproductive biology of S. sphenanthera was analyzed at these sites, including population structure, pollination, floral morphology, and natural fruit set. The 11 populations at two sites were male biased. The primary floral visitors were gall midges (Resseliella sp., Cecidomyiidae; Diptera) and thrips (Thrips flavidulus; Thysanoptera). Floral visitor exclusion experiments and pollen load analysis indicate that gall midges are the primary pollinators. Pollen was the only floral reward for the gall midges. Female flowers attracted pollinators using deceit. The natural fruit set ratio in the cut forest site (JJV) was significantly lower than that at the JGM site, where habitats of S. sphenanthera were well preserved. This indicates that the life cycles of S. sphenanthera and the pollinating insects are vulnerable in disturbed (or cut) habitats.