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1.
植物次生代谢物质和害虫防治   总被引:3,自引:0,他引:3  
植物次生代谢物质从其生物合成途径可以将次生物质分成酚类、类萜、含氮化合物和其他次生物质4大类。 植物次生代谢物质对害虫有忌避和毒杀作用,引诱害虫在寄主上产卵,使其后代有较好生存环境。植物次生物质吸 引传粉昆虫繁衍后代,同时也吸引某些共生生物。植物次生代谢物质在昆虫和植物协同进化中具有信号转递功能。  相似文献   

2.
Journal of Plant Diseases and Protection - Plant diseases are the major factor behind production loss in agriculture. The traditional manual methods for disease detection in plants involve expert...  相似文献   

3.
European Journal of Plant Pathology - Plant antimicrobial peptides (AMPs) as a part of plant defense responses, are small soluble defense molecules which can inhibit the growth of pathogens. This...  相似文献   

4.
2018年我国内蒙古、黑龙江、吉林三省交界处草地螟突发高密度种群,导致年度发生面积和发生程度为近10年以来最高。2018年草地螟各世代的发生特点为越冬代成虫发生面积大、内蒙古、黑龙江蛾量高,1代幼虫在内蒙古中东部重发,1代成虫在内蒙古东北部和河北局部种群数量高,2代幼虫仅零星发生。分析了我国东北局部种群数量突增的原因,即越冬代成虫异地大量迁入,且重发区域空中风场和天气条件有利于成虫降落和产卵。  相似文献   

5.
Data on the occurrence and spread of pests has been supplied by the Hungarian Plant Protection Organization for over 40 years. Since the 1970s, this service has been operated by the central station and the 20 county stations of the Plant Protection Organization. Data recorded on pest occurrence and developmental stage of pests and plants has been used to run a forecasting system at local and national levels. However, because of significant staff reductions in the Plant Protection Organization and the disappearance of independent forecasting groups, the reliability of the system, which was based on very specific data, has decreased. It has become necessary to develop a more reliable and flexible computer‐aided system (Plant Protection Information System, PPIS), better adjusted to the political and economic changes that have occurred. A major element of the new system, introduced in 1997, is that excessively detailed recording was replaced by a more practical general approach with fewer subjective errors. Specialists from the county stations of the Plant Protection Organization monitor infestation levels of 73 pests in 20 crops using five qualification categories. The results obtained are input into the PPIS program, which processes them into user‐friendly charts and maps showing the plant health situation in each county and in the country as a whole, as a basis for taking decisions on plant protection measures.  相似文献   

6.
Never before has the need for accurate distribution data for plant pests been so important. CAB International (CABI) and EPPO are international organizations with a long history and strong involvement in collating and disseminating information on the global distribution of plant pests. Distribution Maps of Plant Pests and Distribution Maps of Plant Diseases, first published in 1951 and 1942, respectively, are respected, referenced sources of such data, expertly compiled and validated and used by plant health organizations around the world. They have been joint CABI/EPPO publications since 1997, and provide an essential complement to expanding knowledge on plant pest distribution. The Distribution Maps continue to be the most authoritative sources of information on the presence and extent of specific plant pests, sourced from the 4.5 million records in CAB Abstracts as a basis and numerous other sources. They also feed directly into CABI's Crop Protection Compendium (CPC) and EPPO's Plant Quarantine Data Retrieval System (PQR) databases. Their history, compilation and value are discussed.  相似文献   

7.
Book reviews     
《Plant pathology》1983,32(1):101-107
Book reviewed in this articles:
Effects of Disease on the Physiology of the Growing Plant , edited by P. G. Ayres.
Fungal Wilt Diseases of Plants , edited by M. E. Mace, A. A. Bell and C. H. Beckman.
Field and Laboratory Guide to Tree Pathology , by R. O. Blanchard and T. A. Tattar.
Pathogens, Vectors and Plant Diseases: Approaches to Control , edited by K. F. Harris and K. Maramorosch.
Plant Virology (2nd Ed.), by R. E. F. Matthews.
Plant Pathology and Plant Pathogens (2nd Ed.), by C. H. Dickinson and J. A. Lucas.
Biology of the Plant Rusts: an Introduction , by Larry J. Littlefield.  相似文献   

8.
Research in the various crop protection disciplines is carried out at the Central Norwegian Plant Protection Institute near Oslo: it includes studies on pesticide efficacy, problems of uptake, breakdown and residues. This agency is further in charge of the extension of practical knowledge and has a supervising capacity for the Plant Inspection Service. Some of the various problems which are of major concern for Norway are reviewed and ways for a proper integration of chemical and alternative methods studied.  相似文献   

9.
P. J. LIMA 《EPPO Bulletin》1992,22(3):475-478
Today, as managers of plant pest control programs seek more and more alternatives to chemical pesticides, the demand for biological control organisms in the USA has increased significantly in volume and variety. There is a corresponding increase in the numbers of permit requests for biological control agents from foreign sources. Environmentalists, Federal and State plant regulatory agencies in the USA are concerned over the long-term effects of these ‘beneficials’ on the target hosts, non-target organisms, codependency of flora and fauna, and on the general environment. Within the Animal and Plant Health Inspection Service (APHIS) of USDA, Plant Protection and Quarantine (PPQ) protects US agriculture from the introduction and dispersal of harmful plant pests. It does this with the help of a network of Plant Quarantine Officers. PPQ strongly supports biological control strategies and the importation of more effective agents by accommodating the needs of agribusiness under appropriate safeguards. Although most biological control organisms are not plant pests, certain precautions are in order prior to release since shipments may contain unwanted pests, other contaminants and prohibited plant material.  相似文献   

10.
科尔沁沙地景观梯度带上植被的空间分布格局研究   总被引:1,自引:0,他引:1  
根据 1 997— 1 998年对科尔沁沙地沙丘植被的实地调查 ,本文依据植物地理学、植物生态学的方法 ,对不同景观梯度带上沙丘植被的植物组成及其重要值等进行了分析 ,从而研究出该地区现阶段在风力水力侵蚀胁迫下的退化草原植被的空间分布格局 ,同时也说明植被的分布与大气降水所制约的水分梯度和风力侵蚀发展的沙漠化梯度有直接的关系。  相似文献   

11.
Book reviews     
《Plant pathology》1983,32(4):473-475
Book reviews in this article
Advances in Plant Pathology, Volume 1, edited by D. S. Ingram and P. H. Williams.
Suppressive Soils and Plant Disease, edited by R. W. Schneider.
Microbial Control of Plant Pests and Diseases, by J. W. Deacon.  相似文献   

12.
Journal of Plant Diseases and Protection - Plant diseases heavily reduce crop yields in developing countries and tropical ecosystems. Lack of capacity to manage the diseases makes these countries...  相似文献   

13.
以夏季采自河南省洛阳市、郑州市的实蝇幼虫、成虫为研究材料,采用DNA条形码技术,通过测定、比对线粒体DNA细胞色素氧化酶I(COI)基因片段序列,对其进行种类鉴定。结果表明,检测的实蝇样品种类为橘小实蝇(Bactrocera dorsalis)、具条实蝇(Zeugodacus scutellatus)和三点棍腹实蝇(Dacus trimacula),与相关种已知序列的相似度均在99.39%以上,其系统发育树明显与我国其他常见实蝇近缘种区分开。  相似文献   

14.
European Journal of Plant Pathology - Grapefruit cultivars (Citrus paradisi Macfad.) are extremely sensitive to Citrus tristeza virus (CTV) infections and are pre-immunized with mild-strain...  相似文献   

15.
European Journal of Plant Pathology - Fruit rot diseases are the serious problem in durian production for domestic consumption and export. Fungicides are commonly applied to reduce postharvest loss...  相似文献   

16.
8种农药对草地贪夜蛾的田间防治效果   总被引:4,自引:0,他引:4  
利用前期室内筛选得到的对草地贪夜蛾有较高防效的5种化学农药和3种生物农药在云南省普洱市江城县开展了对玉米上草地贪夜蛾田间药效试验研究。结果表明,化学农药60 g/L乙基多杀菌素SC、5%甲氨基阿维菌素苯甲酸盐ME、200 g/L氯虫苯甲酰胺SC、5%氯虫苯甲酰胺UL和75%乙酰甲胺磷SP施药7 d后对草地贪夜蛾的防效达到81.42%~92.59%,施药15 d后对玉米叶片的保护率达到82%~95%。3%氟虫腈ME施药7 d后的防效为46.90%,施药15 d后对玉米叶片的保护率仅为18.75%。生物农药10%多杀霉素WG、8 000 IU/μL苏云金杆菌SC和80亿孢子/g球孢白僵菌OD施药7 d后的防效分别为73.62%、60.78%~64.01%和29.12%,施药15 d后对叶片保护率分别为57.50%、25.63%~36.25%和26.25%。本研究结果表明,乙基多杀菌素、甲维盐、氯虫苯甲酰胺、乙酰甲胺磷及抗生素类农药多杀霉素等新型高效低毒农药是草地贪夜蛾应急防控的首选农药,而苏云金芽孢杆菌和球孢白僵菌对该虫防治效果相对较低,适用于低密度种群的预防性控制用药。  相似文献   

17.
The global sustainability agenda is increasing the demand for reduction in inputs into agricultural production while maintaining profitable yield of quality products. Plant diseases are a major constraint for both yield and product quality, but often tools for their control are ineffective or lacking. Biological control using antagonistic microorganisms has long been a subject of research resulting in a wide range of products that are now available and marketed in specific territories around the world. These preparations are often niche products with narrow uses. The research effort is intense both to develop new biological control agents (BCAs) and to obtain knowledge of the mechanisms underlying biological disease control. The prospects for biological control are promising. As a minimum, BCAs supplement other sustainable disease management practices such as disease resistance, and present opportunities for controlling diseases for which other approaches are ineffective or unavailable. We can realistically expect increasing use of BCAs to control crop diseases in ways that will benefit the environment. This review paper arose from a webinar held by the British Society for Plant Pathology as part of the International Year of Plant Heath (IYPH2020), at which many of the 300 participants posed or discussed interesting questions. This review is based on that input and the panel members at the webinar are all included as co-authors in this review.  相似文献   

18.
Preventing the introduction of dangerous organisms into new countries and regions requires an international approach. The article reviews the most dangerous organisms for different continents, and describes in particular the procedures developed in Europe for assessing quarantine risks, through international cooperation within the European and Mediterranean Plant Protection Organization. The activities of EPPO are reviewed, and also those of the ISHS Plant Protection Commission, especially in relation to fruit-tree viruses. The implementation of international cooperation within the European Community, and specifically in Denmark, is described.  相似文献   

19.
Book reviews     
《Plant pathology》1990,39(1):208-210
Book reviews in this article:
Spatial Components of Plant Disease Epidemics , edited by M. J. Jeger.
Bacteria as Plant Pathogens , by Eve Billing.
Bacteria as Plant Pathogens , by Eve Billing.
Viruses with Fungal Vectors , edited by J. I. Cooper and M. J. C. Asher.  相似文献   

20.
Journal of Plant Diseases and Protection - Phytoplasmas are intracellular plant pathogens originated from a single lineage derived from Gram-positive bacteria and belong to the class Mollicutes....  相似文献   

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