南方农业学报2017，Vol.48Issue(12)：2182-2189,8.DOI:10.3969/j.issn.2095-1191.2017.12.11
不同木薯品种对朱砂叶螨抗性分析
Resistance of different cassava varieties to Tetranychus Cinnabarinus
摘要
Abstract
[Objective]Resistance of different cassava varieties to Tetranychus cinnabarinus was studied to provide reference for promoting cassava varieties with fine comprehensive traits,high yield and strong mite resistance.[Method]Six cassava varieties(XX048,SC205,SC8,GR4,D346 and F50)were taken as the materials.The damage degrees of different cassava varieties at the first T.cinnabarinus hazard peak were investigated and their mite resistances were also de-tected.Nutrient components in leaves of different cassava varieties and their leaf morphological characters were determi-nated,and the relations between each index and mite damage degree were analyzed to investigate resistance mechanism of cassava to T.cinnabarinus.During the harvest stage,yields and related traits of six cassava varieties to select the ones with fine comprehensive traits,high yield and strong mite resistance.[Result]Results of the trial indicated that XX048, D346 and F50 were moderate resistant(MR)varieties with mite resistance index being 56.11%-61.41%,SC8,SC205 and GR4 were susceptible(S)varieties with mite resistance index being 74.26%-84.07%.Mite damage indexes had significant positive correlation(P<0.05)with soluble sugar content,protein content,proline content,soluble,water content and leaf thickness.Besides,the indexes had extremely significant positive correlation with free amino acids content(P<0.01).But the relations between mites damage indexes and SPAD,wax content,length of the biggest lobed leaf and width of the big-gest lobed leaf were not significant(P>0.05,the same below).Mite damage indexes had negative correlation with yield and related traits,but the correlation was not significant.[Conclusion]Among the six varieties,XX048 has the strongest mite resistance,its yield related traits are fine,and the yield is the highest among them all.Therefore,it can be promoted in planting areas where T.cinnabarinus hazards occur frequently.Soluble sugar,soluble protein,proline,water content,free amino acids and leaf thickness can be used as important identification index for the resistance of cassava to T.cinnabarinus.关键词
木薯/朱砂叶螨/抗性/产量Key words
cassava/Tetranychus cinnabarinus/resistance/yield分类
农业科技引用本文复制引用
韦婉羚,罗兴录,王天亮,周信良,吴昊..不同木薯品种对朱砂叶螨抗性分析[J].南方农业学报,2017,48(12):2182-2189,8.基金项目
广西科学研究与技术开发计划项目(桂科重14121005-2-1) （桂科重14121005-2-1）
国家现代农业产业技术体系广西薯类产业创新团队项目(nycytxgxcxtd-03-11-2) （nycytxgxcxtd-03-11-2）
南宁市科学研究与技术开发计划项目(201109044B) （201109044B）
亚热带农业生物资源保护与利用国家重点实验室开放基金项目(SKLCOSA-b201609) （SKLCOSA-b201609）
