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首页> 外文期刊>Journal of Plant Protection Research >Evaluation of influencing factors on the locationand displacement of Ostrinia nubilalis larvae in maize stalksmeasured by computed tomography
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Evaluation of influencing factors on the locationand displacement of Ostrinia nubilalis larvae in maize stalksmeasured by computed tomography

机译：计算断层扫描测量玉米秸秆中汤米芽孢杆菌幼虫地点和位移的影响因素评价

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摘要

Ecology and life characteristics of overwintering larvae of the European corn borer (Os-trinia nubilalis Hbn.) (Lep.: Crambidea) are partly unexplored due to their hidden lifestyle. In plant protection research the best way to study these phenomena isto apply less used, non-destructive, in vivo methods. The objective of our CT survey was to examine the factors influencing the location of the overwintering O. nubilalis larvae in maize stalks. The findings obtained by CT-analysis can be used for monitoring the presence and location of O. nubilalis larvae in the stalk, as well as both their displacement and movement. Our results showed that both the location and the distance from the brace root of O. nubilalis larvae were significantly influenced by the sampling time, the number of larvae per plant, the stalk diameter and finally the prevailing temperature. The location of the larvae situated nearest to the brace roots (first larvae) was significantly lower in stalks containing several larvae, than those where only a single larva was found in the stalk. The thickness of stalks was related to the simultaneous presence of more larvae, and to the ground level position of the first larvae. These overwintering larvae were located closer to the brace root(and to the soil), possibly because of having moved downwards inside the stalk, where the temperature is slightly milder than in the upper part of the stalk.
机译：欧洲玉米螟越冬幼虫的生态和生活特征（OS-Trinia Nubilalis HBN。）（LEP.: Crambidea）由于他们隐藏的生活方式是部分未开发的。在植物保护研究中，研究这些现象的最佳方式是在体内使用较少使用的，无损性。我们的CT调查的目的是检查影响玉米秸秆中牛头糖幼虫的左上方O. Nubilalis幼虫的因素。通过CT分析获得的发现可用于监测O. Nubilalis幼虫在茎秆中的存在和位置，以及它们的位移和运动。我们的研究结果表明，O. Nubilalis幼虫的括号根部的位置和距离受到取样时间的显着影响，每株植物的幼虫数量，茎直径和最终普遍的温度。位于Brace Roots（第一只幼虫）最近的幼虫的位置在含有几个幼虫的茎中显着降低，而不是在茎上发现单个幼虫的茎。秸秆的厚度与更多幼虫的同时存在有关，以及第一幼虫的地层位置。这些过冬的幼虫更靠近支撑根（和土壤），可能因为在茎中向下移动，温度比在茎的上部略微升高。

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