Effects of distinct pollinators on the mating system and reproductive success in Incarvillea sinensis, an annual with large floral displays
Effects of distinct pollinators on the mating system and reproductive success in Incarvillea sinensis, an annual with large floral displays
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不同传粉媒介对一年生大型花卉展示植物 Incarvillea sinensis 交配系统和繁殖成功率的影响
DOI：
10.1093/jpe/rty002
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发表时间：
2019-01
期刊：
影响因子：
--
通讯作者：
Bai Wei Ning
中科院分区：
文献类型：
--
作者：
Ma Yue;Yin Ge;Gao Jing;Luo Yi Bo;Bai Wei Ning
大多数开花植物与动物进行互惠，在个体之间移动花粉，并且预计传粉者在自交的进化中发挥重要作用，但很少有研究确定不同的传粉者类型如何影响植物的交配系统和繁殖成功差异。我们调查了两种不同的传粉者对角蒿繁殖成功的影响，角蒿是一种一年生植物，具有艳丽的昆虫授粉的一日花。方法对两种传粉昆虫（Bombus patagiatus和Amegilla quadrifasciata）进行单次访花标记，计算柱头上的花粉量、花药中的花粉量、结实率、异交率和亲子关系。重要的发现有没有显着差异的花粉粒沉积在柱头上的数量，或在两个传粉者之间的种子和果实设置在这两年。B去除花粉粒的平均数。patagiatus显著高于A.四带虫B授粉的花异交率。patagiatus授粉的花的花粉量显著高于A.四带虫B授粉花的亲子关系。patagiatus授粉的花的花粉量显著低于A.四带虫对我来说。sinensis，B. patagiatus可能表现出较大的花粉浪费，从而降低了植物的雄性繁殖成功率，但由于其较高的异交率和较低的亲子相关性，它导致较高的雌性繁殖成功率。我们的研究结果强调，不同的动物传粉者确实可以导致不同的交配系统和繁殖成功。
Aims Most flowering plants engage in mutualisms with animals to move pollen between individuals, and it is expected that pollinators play an essential role in the evolution of selfing, yet few studies have determined how distinct pollinator types affect a plant’s mating system and reproductive success differentially. We investigated the effect of two different pollinators on the reproductive success of Incarvillea sinensis, an annual with showy, insect-pollinated, one-day flowers. Methods We marked flowers after a single visit from both pollinator species (Bombus patagiatus and Amegilla quadrifasciata) and calculated the number of pollen grains deposited on the stigma and pollen left in the anthers, the fruit and seed set, the outcrossing rate and the correlations of paternity. Important Findings There was no significant difference in the number of pollen grains deposited on the stigma, or in the seed and fruit set between the two pollinators in both years. The mean number of pollen grains removed by B. patagiatus was significantly higher than that removed by A. quadrifasciata. The outcrossing rate of flowers pollinated by B. patagiatus was significantly higher than that of flowers pollinated by A. quadrifasciata. The correlation of paternity of flowers pollinated by B. patagiatus was significantly lower than that of flowers pollinated by A. quadrifasciata. For I. sinensis, B. patagiatus may exhibit larger pollen wastage, thus reducing the male reproductive success of the plant, but it causes higher female reproductive success because of its higher outcrossing rate and the lower correlation of paternity. Our findings highlighted that different animal pollinators could indeed cause differential mating systems and reproductive success.
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影响因子：
1.5
作者：
M. Johnston
通讯作者：
M. Johnston
影响因子：
3.3
作者：
C. J. Webb;K. Bawa
通讯作者：
C. J. Webb;K. Bawa
影响因子：
3
作者：
Gabriele Schmidt‐Adam;A. Young;B. Murray
通讯作者：
Gabriele Schmidt‐Adam;A. Young;B. Murray
影响因子：
2.3
作者：
Murakami, T;Ohkawara, K;Higashi, S
通讯作者：
Higashi, S
影响因子：
3.4
作者：
Ollerton, Jeff;Winfree, Rachael;Tarrant, Sam
通讯作者：
Tarrant, Sam