贵州木薯种质资源圃花叶病发病与烟粉虱调查  

Survey of Mosaic Disease and Bemisia Tabaci in Cassava Nursery Garden of Guizhou

作　　者：饶萍 罗春芳[1] 欧珍贵[1] 谢恩俊 班秀芝[1] 杨龙[1] RAO Ping;LUO Chunfang;OU Zhengui;XIE Enjun;BAN Xiuzhi;YANG Long(Guizhou Institute of Subtropics Crops,Xingyi,China 562400)

机构地区：[1]贵州省亚热带作物研究所,贵州兴义562400

出　　处：《热带农业科学》2022年第1期56-60,共5页Chinese Journal of Tropical Agriculture

基　　金：贵州省科技计划项目“饲用木薯品种鉴选及饲用技术研究”(No.黔科合支撑[2019]2358号);“两江一河”热带(亚热带)精品果树产业发展(No.黔农科院精品水果产业专项[2020]01号);滇桂黔石漠化地区特色作物产业发展关键技术集成示范项目(No.SMH2019-2021)。

摘　　要：木薯花叶病(CMD)是由双生病毒引起的,是木薯的主要病害之一,可由烟粉虱携带病毒传播。作者于2019年和2020年采用踩踏调查和五点取样法,对贵州望谟的国家木薯种质资源圃(贵州)备份基地的木薯种质资源进行木薯花叶病发病率、病情指数和烟粉虱种群数量调查。结果表明,2019年共计12个发病种质,平均发病率在8%~55.73%,病情指数在4~14;2020年共计22份发病种质,发病率在2.08%~55%,病情指数在1.67~39.67。木薯花叶病发病高峰多集中于7月,烟粉虱种群数量高峰集中于9月,发病率和烟粉虱数量均随温度降低而下降。Cassava mosaic disease(CMD)is one of the main diseases that damage cassava,which was caused by begomoviruses and can be transmitted by whitefly.From 2019 to 2020,the one-the-spot survey and five-point sampling was made to the cassava germplasm resources of the National Cassava Germplasm Resources Nursery(Guizhou)Backup Base in Wangmo,the survey included the incidence of cassava mosaic disease,disease index and whitefly abundance.The results showed that there were 12 germplasms were infected in 2019,with an average incidence of 8%~55.73%,and disease index of 4-14.In 2020,a total of 22 germplasms were infected,with an incidence of 2.08%~55%,and disease index of 1.67~39.67;The peak incidence of cassava mosaic disease was mostly concentrated in July,and the population peak of whitefly population was concentrated in September.Both the incidence rate and the number of whitefly decreased with the decreasing of temperature.

关 键 词：木薯 木薯花叶病 病情指数 烟粉虱 种群数量 

分 类 号：S533[农业科学—作物学]