棉花苗期棉蚜捕食性天敌优势种的评定   总被引：1，自引：0，他引：1  

邹运鼎  王弘法  张永熙  赵昌平 《安徽农业大学学报》1989,(1)

通过1983—1986年5—6月份棉田定点系统调查,1986年6月天敌与棉蚜空间格局动态的研究以及室内饲养功能反应的测定,根据作者(邹运鼎1986)提出的标准,从天敌、害虫两者数量、时间、空间三个方面关系综合评定、得出龟纹瓢虫是棉花苗期棉蚜的捕食性天敌优势种。  相似文献   

龟纹瓢虫成虫对棉蚜的搜索行为及棉蚜的应激反应     

邹运鼎  唐世湖  陈高潮  王勇  徐光财 《安徽农业大学学报》1991,(1)

用NAKAMUTA(1982)的装置研究了龟纹瓢虫成虫对棉蚜的搜索行为和棉蚜的应激反应,得出:1、搜索摄食棉蚜前的搜索轨迹弯曲角度小,搜索活动速度快,搜索摄食棉蚜后的0—15秒期间搜索轨迹弯曲角度大,搜索活动速度慢。2、棉蚜受到龟纹瓢虫成虫攻击前后4分钟内触角摆动频率差异显著,攻击后大于攻击前。3、棉蚜利用保护色逃避龟纹瓢虫成虫捕食的作用不明显。4、龟纹瓢虫成虫对聚集格局棉蚜的搜索是聚集搜索,而对随机格局和均匀格局棉蚜的搜索是均匀搜索,以此提高搜索效率。5、空间分布结果表明龟纹瓢虫对棉蚜在生活小环境上有追随关系。  相似文献   

蚜虫的寄主选择与取食行为   总被引：3，自引：0，他引：3  

苏建亚  夏基康 《南京农业大学学报》1987,(2)

本文综述了作为植物病毒主要介体蚜虫的寄主选择和取食行为。蚜虫对寄主的选择主要为有翅蚜。有翅蚜的活动可分为4个行为阶段:停息相、迁飞相,进攻相和定居相。蚜虫的寄主选择主要在迁飞相和进攻相,并按一定的行为序列进行。决定蚜虫寄主选择行为序列执行的因素主要是食物源刺激,蚜虫在活动中若得到适当的正向刺激,就开始取食。由于大多数蚜虫吸食韧皮部,因此对蚜虫的口针导向机制进行了解释。  相似文献   

Representation of Potato Virus Y Control Strategies in Current and Past Extension Literature     

Thomas F. Döring  Joachim Schrader  Christian Schüler 《Potato Research》2006,49(3):225-239

The aphid-vectored Potato virus Y (PVY) is currently seen as an important limiting factor in the production of potatoes in many countries. Using a content-analysis approach, we investigated the German extension literature for recommendations regarding the control of PVY. Media included articles from periodicals addressing farmers and agricultural textbooks published in the last five decades (1955–2004). In the current literature (1995–2004), the clearly dominating strategy was found to be insecticidal control, although this strategy has been subject to some criticism in the scientific literature. Over the last five decades we also found a strongly increasing representation of insecticidal strategies. Furthermore, over this period of time, information diversity, measured as the number of different strategies proposed per article or per textbook, decreased consistently. Electronic supplementary material The online version of this article () contains supplementary material that is available to authorized users.  相似文献   

蚜虫的防治技术及应用新进展   总被引：9，自引：0，他引：9  

马国兰  柏连阳 《安徽农业科学》2006,34(14):3406-3408

从培育抗虫品种、化学防治、生物防治3个方面对蚜虫的防治技术进行了综述。  相似文献   

转IPT基因油菜提高抗蚜虫能力     

李海林  赵德刚 《分子植物育种》2011,9(3):343-349

本研究利用农杆菌介导IPT(isopentenyl-transferases,异戊烯基转移酶)基因转化喀斯特特有甘蓝型油菜自交品种S65,在无激素的筛选培养基中获得再生植株14株,PCR检测12株外源基因整合入油菜基因组中.对其中5株转基因植株及5株野生型植株人工接种蚜虫试验,研究超量表达IPT基因油菜对蚜虫的抗性.结...  相似文献   

中国东北抗蚜野生大豆重复鉴定的研究   总被引：1，自引：0，他引：1  

杨振宇  本多健一郎  王曙明  马晓萍 《吉林农业科学》2004,29(5):3-6

对3份野生大豆85-32、85-39和85-1在人工气候箱内进行抗蚜重复鉴定。结果表明,85-32为抗(R)大豆蚜虫,而85-39、85-1为感蚜材料(S),抗级与栽培大豆吉林35无明显差异。研究结果对大豆抗蚜育种及遗传研究中抗源材料的应用提供了保障。  相似文献   

雪花莲外源凝集素基因在大白菜中的表达和抗蚜性遗传分析   总被引：14，自引：1，他引：14  

杨广东  朱祯  李燕娥  朱祝军  上官晓霞  吴霞 《园艺学报》2003,30(3):341-342

 通过农杆菌介导法将雪花莲外源凝集素基因(gna)导入了大白菜自交系282。分子检测和抗虫试验表明gna基因已整合进大白菜基因组，转基因植株较非转化对照植株有一定的抗蚜虫能力，抗虫性好的植株可以检测到较强的gna基因转录产物；后代遗传分析表明外源基因在转基因大白菜植株282-3和282-9的T₁代呈3:1的孟德尔分离比例。  相似文献   

蚜虫与蔬菜病毒流行的关系及阻断蚜虫传毒的途径     

罗华元  濮祖芹 《云南农业大学学报(自然科学版)》1991,6(4):235-240

 在田间多数蔬菜病毒都以蚜虫为媒介进行传播,蚜虫与蔬菜病毒流行关系密切,了解这些关系对有效防治蚜传蔬菜病毒病有重要意义。为此,本文综述了蔬菜上主要蚜传病毒及传毒蚜虫种类;蚜虫传播蔬菜病毒病的特点;有翅蚜迁飞与蔬菜病毒流行的关系及阻断蚜虫传毒的途径等问题。  相似文献   

Preliminary Study on Metabolic Resistance Mechanism of Aphis craccivora in Intercropping Field of Cotton and Peanut to Imidacloprid     

Yang Yuanxue  Li Zhuo  Duan Ailing  Xue Chao  Xu Zhiping  Zhao Ming 《棉花学报》2013,32(2):151-157

[Objective] This study aims to explore the difference of imidacloprid resistance between Aphid gossypii and Aphid craccivora in intercropping field of cotton and peanut, and the mechanism of imidacloprid resistance to A. craccivora, so as to scientifically control these pests and to effectively avoid the rapid development of the resistance to imidacloprid. [Method] Two A. gossypii field populations and two A. craccivora field populations were collected from intercropping field of cotton and peanut in Juye and Linqing county of Shandong province, China. The bioassay experiment with two A. gossypii field populations, the bioassay and synergism experiment in two A. craccivora field populations were performed by the leaf dipping method. In addition, the activities of carboxylesterase (CarE), glutathione S-transferase (GST) and cytochrome P450 monooxygenase (P450) were assayed in the susceptible strain and two field populations of A. craccivora. [Result] Two A. gossypii field populations from Linqing and Juye exhibited moderate levels of resistance to imidacloprid, with the resistance ratios of 43.2- and 54.6-fold, while two A. craccivora field populations from Linqing and Juye showed susceptible and low level of resistance to imidacloprid, with the resistance ratio of 3.7- and 8.3-fold, respectively. According to the synergistic experiments, PBO and DEM significantly synergized imidacloprid in A. gossypii field population of Juye with the synergistic ratio of 3.63- and 1.95-fold, respectively, and TPP had no effect on imidacloprid toxicity. In A. craccivora field population of Linqing, PBO significantly synergized imidacloprid with the synergistic ratio of 3.05-fold, and DEM and TPP had no effect on imidacloprid. Further enzyme activity tests revealed that the activities of P450 and GST in Juye A. craccivora population were significantly higher than susceptible strain, and the activity of CarE had no significant difference between Juye A. craccivora population and susceptible strain. However, the activity of P450 in Linqing A. craccivora population was higher than susceptible strain, and the activities of CarE and GST had no significant differences. [Conclusion] Sensitivity of the two aphids in intercropping field of cotton and peanut to imidacloprid were greatly different, and P450 and GST may play an important role in resistance of A. craccivora to imidacloprid. The results are valuable for reasonable use of pesticides to delay the development of pesticide resistance of two aphids.  相似文献