Flower Volatiles, Crop Varieties and Bee Responses
Flower Volatiles, Crop Varieties and Bee Responses
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DOI：
10.1371/journal.pone.0072724
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发表时间：
2013-08-20
期刊：
影响因子：
3.7
通讯作者：
von Fragstein, Maximillian
中科院分区：
文献类型：
--
作者：
Klatt, Bjoern K.;Burmeister, Carina;von Fragstein, Maximillian
通过提高作物的产量和质量，Pollectin对全球粮食生产的贡献估计占三分之一。作物花朵释放的挥发性化合物介导植物-传粉者的相互作用，但作物品种之间的差异仍然很少探索。我们调查是否访问作物花是由品种特定的花挥发物使用草莓品种（草莓x ananassa Duchesne），以及这如何影响授粉服务的野生蜂壁蜂bicornis L。采用顶空收集法测定了3个草莓品种花的挥发性成分。气相色谱分析表明，三个草莓品种产生相同的挥发性化合物，但挥发性物质的总量和不同化合物之间的数量差异。触角电图记录显示，经验不足的双角壁蜂雌性触角对所有挥发性化合物的反应均高于对空气和石蜡油的反应，但不同化合物的反应不同。品种索纳塔被发现排放总的挥发性物质的水平较高，也较高的水平的大多数化合物，引起触角的反应相比，其他品种Honeoye和Darselect。索纳塔也收到了更多的花访问壁蜂bicornis女性在野外条件下，相比Honeoye。我们的研究结果表明，草莓品种之间的花挥发性化合物的排放差异介导其吸引力的女性壁蜂双角。由于可销售水果的质量和数量取决于最佳授粉，因此需要更好地了解花卉挥发物在作物生产中的作用，并应在作物品种育种中予以更密切的考虑。
Pollination contributes to an estimated one third of global food production, through both the improvement of the yield and the quality of crops. Volatile compounds emitted by crop flowers mediate plant-pollinator interactions, but differences between crop varieties are still little explored. We investigated whether the visitation of crop flowers is determined by variety-specific flower volatiles using strawberry varieties (Fragaria x ananassa Duchesne) and how this affects the pollination services of the wild bee Osmia bicornis L. Flower volatile compounds of three strawberry varieties were measured via headspace collection. Gas chromatography showed that the three strawberry varieties produced the same volatile compounds but with quantitative differences of the total amount of volatiles and between distinct compounds. Electroantennographic recordings showed that inexperienced females of Osmia bicornis had higher antennal responses to all volatile compounds than to controls of air and paraffin oil, however responses differed between compounds. The variety Sonata was found to emit a total higher level of volatiles and also higher levels of most of the compounds that evoked antennal responses compared with the other varieties Honeoye and Darselect. Sonata also received more flower visits from Osmia bicornis females under field conditions, compared with Honeoye. Our results suggest that differences in the emission of flower volatile compounds among strawberry varieties mediate their attractiveness to females of Osmia bicornis. Since quality and quantity of marketable fruits depend on optimal pollination, a better understanding of the role of flower volatiles in crop production is required and should be considered more closely in crop-variety breeding.