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首页> 外文期刊>Plant Pathology >Splash dispersal of Pseudocercosporella herpotrichoides spores in wheat monocrop and wheat-clover bicrop canopies from simulated rain.
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Splash dispersal of Pseudocercosporella herpotrichoides spores in wheat monocrop and wheat-clover bicrop canopies from simulated rain.

机译：模拟雨中小麦单作和小麦三叶草比目鱼冠层中Pseudocercosporella herpotrichoides孢子的飞溅散布。

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摘要

Simulated rain was allowed to fall onto spore suspensions of P. herpotrichoides. The splash droplets were collected on horizontal traps at the bottom of a canopy and at 12 cm above treatments comprising no-crop, wheat monocrop and a wheat-Trifoliumbicrop. The number of conidia collected on horizontal traps declined exponentially with distance from the inoculum source. The mean number of spores collected in the absence of any crop was twice that in a monocrop and in the monocrop it was twice than the bicrop. Both splash droplet and spore deposition gradients were steeper in the monocrop treatment than in no-crop, and shallower in bicrop than in monocrop. It is suggested that the clover canopy acted as a secondary source for the redistribution of previously dispersed droplets and spores.
机译：允许模拟雨落到P. herpotrichoides的孢子悬浮液上。将飞溅的液滴收集在冠层底部的水平阱上，并在包括非作物，小麦单季作物和小麦-三叶草的处理上方12厘米处的水平陷阱上收集。水平诱捕器上收集的分生孢子数量与距接种源的距离呈指数下降。在没有任何农作物的情况下收集的平均孢子数量是单作农作物的两倍，而单作农作物的平均孢子数量是单作农作物的两倍。单季作物处理中飞溅液滴和孢子沉积梯度均比非单季作物陡峭，而在双作物中则比单季作物浅。建议三叶草冠层充当先前分散的液滴和孢子的重新分布的次要来源。

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