The contribution of pollinators varies among soybean cultivar traits

IF 3 2区环境科学与生态学 Q2 ECOLOGY

Basic and Applied Ecology Pub Date : 2024-10-09 DOI:10.1016/j.baae.2024.10.002

Natacha P. Chacoff , Julieta Carrasco , Silvio E. Castillo , A. Carolina Monmany Garzia , Lucía Zarbá , Roxana Aragón

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引用次数: 0

Abstract

Soybean is one of the most widely cultivated species worldwide. Empirical studies have shown that animal pollination can contribute between 0 and 50 % to soybean yields. However, the role of animal pollination in soybean production is often overlooked in management decisions. Understanding the factors driving variability in pollinator contribution can aid in developing effective management strategies. In this study, we experimentally assessed the contribution of both autonomous and animal pollination across nine widely cultivated soybean cultivars in the Chaco region of Argentina. Additionally, we explored whether specific traits of these cultivars could explain the observed variability in pollination contribution. We used field exclosure experiments to study cultivars that differed in flower color, genetic modifications, and maturity groups, and analyzed the variability in pollinators’ contributions across years and locations. We found that the overall reduction in production between open and bagged plants was, on average, 40 % (CI 25–51 %). The contribution of pollinators varied depending on flower color, maturity groups, and locations, but not across different years or genetic modifications. Cultivars with purple flowers showed greater differences between open and bagged plants compared to those with white flowers, indicating that flower color may influence the attractiveness of flowers to pollinators. Additionally, pollinators’ contribution varied across maturity groups, potentially due to the differential timing of the flowering affecting the local abundance of pollinators within the crop. Notably, the variable used to estimate pollinators’ contribution (i.e., seeds, pods, or yield) conditioned the results. Pollinators’ contribution can be highly variable, and traits associated with cultivars can help improve our understanding of such heterogeneity. Our results showed that the contribution of pollinators to soybean cultivars in the Chaco region of Argentina ranges from modest to high. This suggests that conserving pollinators and managing agricultural fields at plot and landscape scales can significantly impact soybean production.

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传粉媒介的贡献因大豆栽培品种特征而异

大豆是全球最广泛种植的物种之一。经验研究表明，动物授粉对大豆产量的贡献率在 0% 到 50% 之间。然而，动物授粉在大豆生产中的作用往往在管理决策中被忽视。了解授粉者贡献率变化的驱动因素有助于制定有效的管理策略。在本研究中，我们通过实验评估了阿根廷查科地区九种广泛种植的大豆品种的自主授粉和动物授粉的贡献。此外，我们还探讨了这些栽培品种的特定性状是否能解释所观察到的授粉贡献的差异性。我们利用田间封闭实验研究了在花色、基因修饰和成熟度组别方面存在差异的栽培品种，并分析了不同年份和地点传粉媒介贡献的变异性。我们发现，开放植株和袋装植株的总产量平均减少 40%（CI 25-51%）。传粉媒介的贡献因花朵颜色、成熟度组别和地点而异，但在不同年份或不同基因改良情况下并无差异。与白色花朵的品种相比，紫色花朵的品种在开放植株和袋栽植株之间的差异更大，这表明花朵的颜色可能会影响花朵对传粉媒介的吸引力。此外，授粉昆虫的贡献在不同成熟度组别之间存在差异，这可能是由于开花时间的不同影响了作物当地授粉昆虫的数量。值得注意的是，用于估算传粉昆虫贡献的变量（即种子、豆荚或产量）对结果产生了影响。传粉昆虫的贡献可能变化很大，而与栽培品种相关的性状有助于提高我们对这种异质性的认识。我们的研究结果表明，传粉昆虫对阿根廷查科地区大豆栽培品种的贡献率从低到高不等。这表明，保护传粉昆虫以及在地块和景观尺度上管理农田会对大豆产量产生重大影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Basic and Applied Ecology 环境科学-生态学

CiteScore

6.90

自引率

5.30%

发文量

103

审稿时长

10.6 weeks

期刊介绍： Basic and Applied Ecology provides a forum in which significant advances and ideas can be rapidly communicated to a wide audience. Basic and Applied Ecology publishes original contributions, perspectives and reviews from all areas of basic and applied ecology. Ecologists from all countries are invited to publish ecological research of international interest in its pages. There is no bias with regard to taxon or geographical area.