Current status of virulence to different rice varieties in brown planthopper, Nilaparvata lugens (St

来源 :14th International Auchenorrhyncha Congress and 8th Internat | 被引量 : 0次 | 上传用户:jasonlau999
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The brown planthopper (BPH), Nilaparvata lugens (St(a)l) (Hemiptera: Delphacidae) is the most serious pest of rice throughout Asia.Many resistant rice varieties were developed and released against BPH since 1973 by the Intemational Rice Research Institute (IRRI) and other countries (Khush 1979).Wide-scale monoculture of rice varieties with monogenic resistance to the BPH resulted in the development of a new biotype of BPH that evaded the resistance of rice to the BPH in the Philippines, Indonesia, Viemam and the Solomon Islands during 1974-1977, soon after the introduction of resistant varieties (Khush 1979; Gallagher et al.1994).Changes in BPH biotypes are a continued threat to increased rice production in Asia.
其他文献
提升陕西农技推广能力要重视发挥各地老科协的作用;更要在创新农技推广(包括推广机制、推广手段、推广模式、推广体系)上下功夫;培养壮大农技推广队伍及选拔评比农技推广秀与培训新型职业农民;研发、集成、推广高新农业技术,提升陕西农业技术推广能力大有希望.
陕西省农民实用技术培训中心是全省大型民办培训机构之一.2000年6月经省教育厅批准成立以来,培训中心就按照"高效实用服务"的要求,组成了以省市、厅局老领导为顾问,以有种养加专业特长的高级职称30多名专家组成的专家组和精干的服务队伍.这些人对农民感情深、实践经验多、技术层次高、知识面比较广.在不断派专家队伍下乡到田间,面对面对农村干部群众进行种养加实用技术培训同时,还充分利用现代信息技术,对全省各县
Previous to this study, Biza Walker, 1858 comprised nine valid species, including the type-species Biza crocea Walker, 1858, distributed from southern Mexico to Central-Westem Brazil (Walker 1858; Kra
会议
Gyponini St(a)l, 1870 is one of the largest tribes of Cicadellidae, comprising 53 genera and approximately 1,080 species (Freytag & Sharkey 2002) with distribution restricted to the New World, with 75
会议
Mesozoic Cicadomorpha found in northeastem China present high diversity, including abounded froghoppers, leafhoppers, planthoppers and their relatives (hoppers), which provide important evidence for s
会议
The aim of this project is the creation of exact reference data on the status quo of "bioindicator" species, so that-in future decades-one may use these data to quantify effects of climate change on t
会议
Introduction The phenomenon of coating brochosomes on the body surface has been found across all of the subfamilies and major tribes of Cicadellidae (Rakitov 2009).The excreted brochosome fluids are f
会议
Peloridiidae, or moss bugs, are the only recent members of the infraorder Coleorrhyncha.Bacterial endosymbionts, widely spread throughout Auchenorrhyncha, Sternorrhyncha and Heteroptera, have been kno
会议
The insect family Delphacidae (Hemiptera: Fulgoroidea) includes approximately 2100 described species and is the most speciose and economically important of the ~20 planthopper families (Urban et al.20
会议
The leafhopper genus Chiasmodolon was described by Dietrich, in Dietrich & McKamey (1990), for the species C bhangwandorum Dietrich.Lozada (2001) added six species to the genus.Three of these were one
会议