So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
Its tendrils curl around the stem of the host plant.
它的卷须缠绕在寄主植物的茎上。
Temperature and host plant were the main occurrence factors.
温度与寄主植物是影响其发生的主要因素。
Resistance induced by biological factors is very important to a host plant.
生物因子诱导的植物抗病性是增强寄主抗病性的重要方法。
The morphology life curcle host plant and habits of this insect are given in this paper in detail.
文章详述了这种害虫的形态、生活史、寄主和习性。
It indicated that E. graminicolum didn't make use of odor of preys and their host plant to search food.
草间小黑蛛对颜色不敏感，说明它们没有利用猎物的寄主植物的颜色进行猎物的搜索。
Finally, the effects of host plant on insecticide susceptibility applied in pest management were discussed.
最后，就寄主植物影响害虫对药剂敏感性在害虫治理中的应用作了探讨。
The sound of planthoppers and leafhoppers in Homoptera is a medium vibration that delivered by their host plant.
同翅目飞虱、叶蝉等小型昆虫的鸣声是由寄主植物传递为介质的振动。
Within the nodules the bacteria convert free nitrogen to nitrates, which the host plant USES for its development.
根瘤内的固氮菌将游离氮转化为硝酸盐，被宿主植物在发育中利用。
There are host plant, media insect and suitable reproduction environment in Beijing city, we should take it seriously.
北京市有松材线虫的寄主植物、媒介昆虫和适宜的定殖环境，应引起高度重视。
Research results in near years show that endophyte can produce some metabolites similar to those from the host plant.
近年来的研究表明，内生真菌可以产生与宿主相同或相似的代谢产物。
Rhus potaniinii Maxim is a fine nectar and pollen plant resource in the mountains and is a host plant of Chinese gall.
青麸杨是山区优良的蜜粉源植物资源，也是五倍子蚜虫的寄主植物。
The bacteria multiply rapidly within the tetraploid cells and become surrounded by a membrane synthesized by the host plant.
细菌在四倍体细胞中快速繁殖，并逐渐被宿主植物合成的膜所包围。
A plant which grows on another plant but gets its nourishment from the air and rainfall. They do no damage to the host plant.
附着在其它植物上，但从空气和雨水中获得营养，他们对主体植物不造成危害。
The results suggest that E. crusgalli is the most suitable host plant of SBPH, followed by japonica rice varieties and then wheat.
研究表明灰飞虱的适宜寄主植物依次为稗草、粳稻品种和小麦。
The lief cycle, life habits and host plant of CPB, as well as its harm and occurrence law in the potato planting areas were studied.
以马铃薯甲虫为供试材料，研究其在马铃薯种植区的生活史、生活习性、寄主、范围和田间消长规律等。
AM fungi is a kind useful microorganism that distributes in the soil system extensively; it can form symbiosis with host plant above 90%.
AM真菌是广泛存在于土壤生态系统中的一类有益微生物，能与90%以上的维管植物形成共生体。
The direct reason why the root-knot nematodes endanger autumnal celery is that Apium graveolens belongs to the host plant of M. lucknowica.
造成勒克瑙根结线虫危害秋芹生产的直接原因是，秋芹属于勒克瑙根结线虫的寄主植物。
Recent studies have shown that some pathogens can mimic the host plant ubiquitin / proteasome system components to achieve their own purposes.
近年的研究表明，某些病原菌能够模拟寄主植物泛素/蛋白酶体系统组分，从而达到利用该系统为病原菌服务的目的。
Our results indicate that sinalbin is an important indicative chemical or feeding stimulant in host plant part preference by the cabbage aphid.
因此，本实验的结果证明，白芥子苷是甘蓝蚜寄主部位选择的关键信号化学物质或取食促进剂。
It was suggested that X. sibiricum could be a suboptimal host plant as an alternative to optimal A. artemisiifolia for the leaf beetle O. communa.
研究结果说明，苍耳属植物可能是广聚萤叶甲除豚草外的另一潜在寄主植物。
If the original host plant was replaced by others, both these Frankia 'infective ability and nitrogenase activity in new symbiotic system were lower.
供试菌随寄主植物的改变，侵染能力及所建立的共生系统固氮活性有所降低。
Test probing is the key process for determining host plant selection, and the chemical composition of the leaf surface wax may play an important role.
试验性刺探是粉虱确定对宿主植物选择的关键过程，而叶表蜡层中的化学物质可能起重要作用。
De Moraes has been working with the weed, which attaches to its host plant "like a leech that will attach to the plant and then suck the nutrients out."
德莫里斯正致力于研究依附于作物的杂草。“就像水蛭一样依附植物，然后吸取其营养。”
These observations suggested that the growth of extraradical hyphae and metabolic activity of the AM fungi was regulated by the P status of the host plant.
宿主植物磷营养状况较好时，菌根真菌生长和代谢活性受到抑制，表明宿主植物的磷营养状况对AM真菌的生长和代谢活性具有调控作用。
Moreover, host plant can also affect the growth and development of AM fungi, and produce different infection rate, spore-bearing rate and mycorrhiza effect.
宿主植物也影响着AM真菌生长和发育，不同的宿主植物会影响AM真菌的侵染率、产孢量以及菌根效应。
The effective method is that ectomycorrhizal fungi are introduced just beside the callus of host plant, which can evidently upgrade the growth of the hyphae.
初步研究了一个较好的外生菌根菌菌丝体培养方法，即将宿主的愈伤组织与外生菌根共同培养，可以明显地促进真菌菌丝的萌发和生长。
The effective method is that ectomycorrhizal fungi are introduced just beside the callus of host plant, which can evidently upgrade the growth of the hyphae.
初步研究了一个较好的外生菌根菌菌丝体培养方法，即将宿主的愈伤组织与外生菌根共同培养，可以明显地促进真菌菌丝的萌发和生长。
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