MOVEMENT OF EELWORMS V. OBSERVATIONS ON APHELENCHOIDES RITZEMA-BOSI (SCHWARTZ, 1912) STEINER, 1932 ON FLORISTS' CHRYSANTHEMUMS
MOVEMENT OF EELWORMS V. OBSERVATIONS ON APHELENCHOIDES RITZEMA-BOSI (SCHWARTZ, 1912) STEINER, 1932 ON FLORISTS' CHRYSANTHEMUMS
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DOI：
10.1111/j.1744-7348.1959.tb02550.x
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发表时间：
1959-06-01
影响因子：
2.6
通讯作者：
Wallace, H. R.
中科院分区：
文献类型：
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作者：
Wallace, H. R.
斜滑刃线虫成虫倾向于在静止水膜中沿着菊花植物的茎向上迁移，这可能是由于负向地性反应。沿着茎流下的水流阻碍了这种向上的运动。最大的流动性发生在表皮毛发高度集中的地方的厚水膜中，例如茎的顶部和叶子的下表面。厚膜和薄膜中运动的电影表明，这两种环境中的运动类型存在根本差异。观察了通过气孔侵入叶子并描述了运动方法。叶子中 A. ritzema-bosi 的存在似乎使表皮具有透水性。在干燥的天气里，叶子内部几乎没有运动，但降雨后，随着水进入叶子，活动就会增加。叶肉中线虫感染的传播发生在叶肉中并穿过叶脉，尽管最初这些起到了屏障的作用。通过气孔出现，主要在下表面。当叶子湿润时，大约 50% 的线虫会在第一个小时内出现。在潮湿的天气期间，许多线虫从叶子表面被发现，这表明线虫主要在这些条件下传播。
Adults of Aphelenchoides ritzema-bosi tend to migrate up the stems of chrysanthemum plants in stationary water films possibly by a negatively geotropic response. A current of water down the stem opposes such an upward movement. Greatest mobility occurred in thick films of water in places with a high concentration of epidermal hairs as at the top of the stem and on the undersurface of leaves. Cine films of movement in thick and thin films showed that there were fundamental differences in the type of locomotion in these two environments. Invasion of leaves via stomata was observed and the method of movement is described. The presence of A. ritzema-bosi in leaves appears to render the epidermis permeable to water. During dry weather there is little movement inside the leaf, but after rainfall activity increases as water enters the leaf. Spread of eelworm infestation in the leaf occurs in the mesophyll and across veins although initially these act as barriers. Emergence occurs via the stomata, chiefly on the undersurface. When the leaf is wet, about 50 % of the eelworms emerge in the first hour. During wet weather many eelworms were recovered from the surfaces of leaves and it is suggested that eelworms spread mostly under these conditions.