甘蔗新品种黔糖5号抗病性分子鉴定与综合评价  

Molecular Identification and Comprehensive Evaluation of Disease Resistance in New Released Sugarcane Variety, Qiantang 5

作　　者：付瑜华[1] 雷石富[1] 卢加举[1] 李文凤[2] 黄应昆 雷朝云[1] 

机构地区：[1]贵州省亚热带作物研究所,兴义562400 [2]云南省农业科学院甘蔗研究所,云南省甘蔗遗传改良重点实验室,开远661699

出　　处：《分子植物育种》2014年第6期1243-1250,共8页Molecular Plant Breeding

基　　金：黔糖5号果蔗新品种示范推广(黔科合成字[2011]5022);现代农业产业技术体系建设专项资金(nycytx-024-01-09)共同资助

摘　　要：抗病性是甘蔗品种选育的目标之一。了解和掌握新育成的优良品种的抗病性,对于合理布局抗病品种,有效利用抗病基因进行科学防控甘蔗病害具有重要意义。本研究以老品种黔糖3号为对照品种,通过症状诊断、病原菌形态特征观察、RT-PCR检测和人工接种等技术对新品种黔糖5号的抗病性进行了系统鉴定与评价。结果表明,新品种黔糖5号免疫甘蔗条纹花叶病毒病(SCSMV),高抗甘蔗褐条病、甘蔗眼斑病、甘蔗花叶病毒病(SCMV)和高粱花叶病毒病(Sr MV);抗甘蔗黑穗病。研究结果为新品种黔糖5号的合理布局和推广应用提供了科学依据。Disease resistance is one of the goals in sugarcane breeding program. Understanding the diseases resistance of new released varieties is significant for promotion of resistant varieties and effective utilization of disease genes to scientifically control sugarcane diseases. This study aimed to systematically identify and evaluate the disease resistance of new variety Qiantang 5 through symptomatic diagnosis, observation of pathogen morphology, RT-PCR and artificial inoculation by using Qiantang 3 as a reference. The results showed Qiantang 5 is immune to SCSMV, highly resistant to sugarcane brown streak, sugarcane eye spot, SCMV and SrMV and resistant to sugarcane smut as well. The present results provided powerful evidence for reasonable promotion and extensive annlication_

关 键 词：甘蔗 黔糖5号 抗病性鉴定 

分 类 号：S566.1[农业科学—作物学]