木薯种质对朱砂叶螨的抗性评价  

Evaluation of Cassava Germplasms for Resistance to Spider Mite Tetranychus cinnabarinus(Acari: Tetranychidae)

作　　者：李迁[1,2] 卢芙萍[2] 陈青[2] 卢辉[2] 徐雪莲[2] 经福林[2] 李开绵[3] 叶剑秋[3] 

机构地区：[1]海南大学环境与植物保护学院,海南海口570228 [2]中国热带农业科学院环境与植物保护研究所农业部热带作物有害生物综合治理重点实验室海南省热带作物病虫害生物防治工程技术研究中心海南省热带农业有害生物监测与控制重点实验室,海南海口571101 [3]中国热带农业科学院热带作物品种资源研究所,海南儋州571737

出　　处：《热带作物学报》2015年第1期143-151,共9页Chinese Journal of Tropical Crops

基　　金：现代农业产业技术体系建设专项资金(No.CARS-12-hncq);中央级公益性科研院所基本科研业务费专项(No.2011hzs1J014)

摘　　要：在建立切实可行的木薯抗螨性评级标准的基础上,对国家木薯种质资源圃227份核心木薯种质进行抗朱砂叶螨的抗性评价,并探讨抗、感性稳定的8份木薯种质对朱砂叶螨生长发育与繁殖的影响。结果表明:227份被评价的核心木薯种质中对朱砂叶螨高抗的种质2份,抗性种质4份,中抗种质116份,感性种质87份,高感种质18份;抗性木薯种质对朱砂叶螨的发育与繁殖具有显著的影响,取食高抗种质C1115和缅甸种叶片后朱砂叶螨雌雄成螨均不能存活,与取食高感种质ZM9066、CM1210-10、瑞士F21和BRA900相比,取食抗性种质哥伦比亚4D和PII167后,朱砂叶螨的发育历期显著延长,平均每雌螨产卵量显著减少,后代卵的孵化率显著降低,雌、雄成螨寿命均显著缩短。本研究结果为深入开展木薯抗螨性机理、抗螨种质的挖掘及其利用研究提供了理论基础。Tetranychus cinnabarinus （Boisduval）is one of the most important cassava pest mites. For a long time, the control of the mite was mainly depended on chemical acaricide. However, the question of environmental pollution and ＂3R＂ has also become more and more serious. The planting of resistance variety to mite is the most effective and direct way to control the spider mite. In the study, on the basis of establishing a feasible cassava mite resistance rating standard, we evaluated the resistance of 227 cassava germplasms to T. cinnabarinus and investigated the influence of 8 resistant and susceptible germplasms to the development and reproduction of T. cinnabarinus. The results showed that： The proposed resistance classification of the 227 cassava germplasms was 2 high resistance（HR）, 4 resistant（R）, 116 moderately resistant（MR）, 87 susceptible（S）and 18 highly susceptible（HS）; The resistance and susceptible cassava germplasms had significant effect on the development and reproduction of T. cinnabarinus. The mites could not survive on the resistance cassava germplasms of Cl115 and Myanmar. In compared with the mites on susceptible cassava germplasms（ZM9066, CM1210-10, SwissF21 and BRA900） , the developmental duration significantly prolonged（larva, protonymph and deutonymph prolonged 15 h, 40 h and 40 h, respectively）, the eggs production（decreased 9-22 eggs per female） and the hatchability（decreased 35%-73%）decreased significantly, and the female and male adults lifespan shortened significantly on resistance germplasms （shorten 4-16 d）. It suggested that the resistance cassava germplasms inhibited the development and reproduction of T. cinnabarinus. The results laid a theoretical foundation for further study on the resistance mechanism of cassava germplasms to spider mites as well as the mining and innovative use of resistance cassava germplasms to spider mites.

关 键 词：木薯种质 朱砂叶螨 抗螨性 鉴定 评价 

分 类 号：S533[农业科学—作物学]