Bee pollination and fruit set of Coffea arabica and C-canephora (Rubiaceae)
Bee pollination and fruit set of Coffea arabica and C-canephora (Rubiaceae)
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DOI：
10.3732/ajb.90.1.153
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发表时间：
2003-01-01
影响因子：
3
通讯作者：
Tscharntke, T
中科院分区：
文献类型：
--
作者：
Klein, AM;Steffan-Dewenter, I;Tscharntke, T
自花不育的中粒咖啡和自花可育的小粒咖啡是许多热带国家的重要经济作物。我们研究了昆虫，风，和自发自花授粉的相对重要性和这两个咖啡品种在印度尼西亚的24个农林咖啡领域的自花受精的程度。在这两个物种，开放授粉和异花授粉的手导致最高的坐果。风媒授粉（包括自花授粉）比自由授粉的坐果率低16%，比自由授粉的坐果率低12.3%。阿拉伯咖啡。自花授粉的花和未处理的对照实现了极低的坐果率。自交不育种的不育率在10%以下，自交可育种的不育率分别为60%和48%。这些结果构成了实验证据，即蜜蜂的异花授粉不仅导致自交不育的咖啡种的坐果显著增加，而且还导致自交能育的咖啡种的坐果显著增加。实际的含义是，咖啡产量可以提高管理领域增加蜜蜂访花。
Self-sterile Coffea canephora and self-fertile C arabica are important cash crops in many tropical countries. We examined the relative importance of insect, wind, and spontaneous self-pollination and the degree of self-fertility of these two coffee species in 24 agroforestry coffee fields in Indonesia. In both species, open pollination and cross pollination by hand led to the highest fruit set. Wind pollination (including self-pollination) led to 16% lower fruit set than open pollination in C canephora and to 12.3% lower fruit set in C. arabica. Self-pollinated flowers and unmanipulated controls achieved an extremely low fruit set of. 10% or less in the self-sterile species, and of 60% and 48%, respectively in the self-fertile species. These results constitute experimental evidence that cross pollination by bees causes a significant increase in fruit set of not only the self-sterile, but also the self-fertile coffee species. The practical implication is that coffee yield may be improved by managing fields for increased flower visitation by bees.