查询词典 peach aphid

The dispersal rates of green peach aphid increased along with the passage of time after treatment.

且随着处理后时间的延长，桃蚜的扩散率上升。

Peach aphid (Homoptera: Aphididae), Myzus persicae, is one of the most economically important pests that result in decreasing of yield and quality of crops of agricultural and horticultural crops throughout the world.

桃蚜属同翅目，蚜科，瘤蚜属，是世界上分布最广、危害最大的蚜虫类害虫之一。

Coccinella septempunctata is a well-known natural enemies of pests, the adult may be preying on aphids, Aphis gossypii, Aphis Cassia, green peach aphid, scale insects, tick and other pests, can significantly reduce the trees, fruits and a variety of crop pests damage suffered by the people referred to as "living pesticide."

七星瓢虫是著名的害虫天敌，成虫可捕食麦蚜、棉蚜、槐蚜、桃蚜、介壳虫、壁虱等害虫，可大大减轻树木、瓜果及各种农作物遭受害虫的损害，被人们称为&活农药&。

Among three microsatellite primers usually used in the aphid and three primers used in the study of the Aedes japonicus (Diptera:Culicidae), finally four primers were selected to amplify the different samples of the green peach aphid. The result showed that DNA samples could be well amplified.

在三条常用的蚜虫微卫星引物和三条用于对日本伊蚊Aedes japonicus 研究所用的引物中，最终选取了33.15 核心序列、4、8G、8G 四条引物对桃蚜的不同样本进行扩增，结果表明扩增效果较好。

Five potato lines were selected for peach aphid resistanceidentification, and the result showed that the effect of insect-resistance was apparent.

通过对转GNA马铃薯进行抗蚜虫鉴定，结果证明转GNA马铃薯对桃蚜具有显著的抗性作用。

The results from insect bioassay with peach aphid showed that the transgenic plants of pBI121AVA-GUS and pBI121AVAc-GUS were aphid resistant, evidenced by a 60.81%~50.63 reduction in insect population density, some plants were more than 97%.

抗蚜实验表明含内含子和无内含子的AVA基因在转基因烟草中的抗蚜能力不同，转AVA和AVAc烟草对蚜虫的抑制率分别为60.81%和50.63%，有的植株高达97%。

As the development of resistance, the green peach aphid showed strong tolerance to pirimicarb and fenvalerate, so these two insecticides were not suitable for control the aphid in field for the risks to the natural enemy.

而抗蚜威和氰戊菊酯由于害虫抗药性或缺乏对天敌的安全性，已不宜用于桃蚜的化学防治。

Among them multi-types of body colour and special types of hosts are the most universal phenomena. In our experiment, methods of microsatellite primer PCR molecular marker and partial gene sequence analysis of mitochondrial DNA COⅠ-Ⅱwere used to analyze genetic diversity of two body colour bio-types (red bio-type and green bio-type) of green peach aphid from different plants and relationship between green peach aphid and host plants by separately selecting individuals of aphid from rape, Chinese cabbage and tobacco. The main results as follows: 1. Selecting An Ruisheng'method of extracting DNA from small sized insect, using this method can extract DNA well and steadily.

本文采用微卫星引物PCR 分子标记和线粒体COⅠ-Ⅱ部分序列分析的方法，分别选取十字花科植物中的甘蓝和油菜，茄科植物中的烟草，对不同寄主上桃蚜的红色和绿色两种体色生物型的遗传多态性及其与寄主植物的关系进行了研究，取得的主要结果如下： 1、选取安瑞生(2002)小型昆虫DNA 提取方法，能很好且比较稳定的提取桃蚜基因组DNA。

It is seen from grafting Aphid test that green peach aphid can feed on green cabbage,spinach and lettuce,and reproduce on them,furthermore,it shows the different viability between on the tested hosts.

通过接种试验看出，桃蚜接种在青菜、菠菜、莴苣等蔬菜上均能取食繁殖，而且相互间可以接种，桃蚜接种在青菜上繁殖生长最快，萝卜蚜和桃蚜接种在番茄上则不能生活，青菜上的萝卜蚜和桃蚜接种在烟草上，其结果萝卜蚜不能生活，而桃蚜经过短期适应取食后，仍可生长、繁殖，为害烟草。

Grandis adult on peach aphid increased with the increment of peach aphid density when peach aphids were in 20 - 120 heads/dish, reached maximum （83.889 heads） and decreased when peach aphids were more than 120heads/dish.

方法在放有1头大突肩瓢虫成虫的培养皿中分别放20、40、60、80、100、120、140、160、180头无翅桃蚜，室内自然条件下饲养，研究大突肩瓢虫成虫对桃蚜的捕食作用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐