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首页> 外文期刊>Seed Science Research >On the use of fungicides in ecological seed burial studies.
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On the use of fungicides in ecological seed burial studies.

机译：关于在生态种子埋葬研究中使用杀真菌剂的研究。

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Evidence for effects of saprophytic fungi on buried seed demography is usually obtained from studies involving the simultaneous burial of fungicide-treated seeds and of untreated seeds. However, any potential influence of fungicide treatment on seed dormancy levels is generally ignored in these studies. Also, some studies assume that a combination of several fungicidal compounds provides better protection against a broader range of fungi, ignoring chemical interactions that may potentially occur between different compounds. To investigate these issues, we carried out a 6-month burial experiment using seeds of Anthriscus sylvestris (L.) Hoffm., Centaurea nigra L. and Daucus carota L., and three substrates differing in organic matter content. Three fungicidal compounds, captan, iprodione and mancozeb, were applied alone and in combination, including an untreated control. All fungicidal compounds and combinations thereof provided protection against fungal-induced seed mortality and, except for a low efficacy of iprodione in protecting seeds of Anthriscus, there were no pronounced differences in seed mortality between different fungicide treatments. Captan temporarily inhibited germination in Centaurea, whereas a similar inhibition in Daucus seeds caused by mancozeb was more long lasting, suggesting an induction of secondary dormancy. Organic matter content had only a negligible influence on these results. Our results suggest that the basic conclusions from most seed burial studies are robust with respect to their choice of fungicide. We conclude by discussing further implications of our findings for the design and interpretation of seed burial studies.
机译：腐生真菌对埋藏的种子人口的影响的证据通常是从同时埋葬经过杀真菌剂处理过的种子和未经处理的种子的研究中获得的。但是，这些研究通常忽略了杀菌剂处理对种子休眠水平的任何潜在影响。而且，一些研究假设几种杀真菌化合物的组合可提供更好的保护，以抵抗更广泛的真菌，而忽略了不同化合物之间可能发生的化学相互作用。为了调查这些问题，我们使用了 Anthriscus sylvestris （L.）Hoffm。， Centaurea nigra L.和 Daucus carota的种子进行了为期六个月的埋葬实验。 L.和三种底物的有机物含量不同。单独和组合使用三种杀真菌化合物，即captan，异丙隆和mancozeb，包括未处理的对照。所有杀真菌化合物及其组合均提供了针对真菌引起的种子死亡的保护作用，除了异丙洛酮在保护炭疽病种子方面的功效较低之外，不同杀真菌剂处理之间的种子死亡率没有明显差异。硫丹会暂时抑制矢车菊（centaurea）的发芽，而曼考昔对红豆（Daucus）种子的类似抑制作用则更持久，表明诱导了次级休眠。有机物含量对这些结果的影响可忽略不计。我们的结果表明，大多数种子埋葬研究的基本结论在选择杀真菌剂方面是可靠的。最后，我们讨论了研究结果对种子埋葬研究的设计和解释的进一步影响。

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