梨品种资源果实轮纹病抗性的评价  

Evaluation of Resistance to Fruit Ring Rot for Pear Cultivars

作　　者：田路明[1] 董星光[1] 曹玉芬[1] 周宗山[1] 吴玉星[1] 

机构地区：[1]中国农业科学院果树研究所/农业部果树种质资源利用重点开放实验室,辽宁兴城125100

出　　处：《植物遗传资源学报》2011年第5期796-800,共5页Journal of Plant Genetic Resources

基　　金：国家梨产业技术体系建设专项(nycytx-29-2);公益性行业(农业)科研专项(nyhyzx07-026)

摘　　要：采用田间人工接种的方法,2009-2010年连续两年对保存于国家梨种质资源更新圃的6种梨的182个品种进行果实轮纹病抗性评价。结果表明:砂梨、白梨、秋子梨、种间杂交梨、西洋梨和新疆梨两年平均发病率分别为6.15%、7.20%、7.43%、12.66%、17.00%、18.93%,各种梨及其品种间对轮纹病抗性存在差异,不同条件下多数品种轮纹病发病率有差异。依据两年平均发病率进行抗性评价分级,72个品种为高抗、63个品种为抗、25个品种为中抗、14个品种为低抗、8个品种为不抗。Resistance of 182 pear cultivars to ring rot were evaluated by inoculation during 2009-2010. The resuits showed that average ratios of infected ring-rot dots of Pyrus pyrifolia（ Burn. f. ）Nakai ,P. bretschneideri Rehd. , P. ussuriensis Maxim, P. hybrid, P. communis L. and P. sinkiangensis Yti were 6.15 % , 7.20% , 7.43 % , 12.66% , 17.00% , 18.93% , respectively, and the ring-rot resistance among cultivars was different. The ratios of infected ring- rot dots in most cuhivars were different under the dissimilar condition. The ring-rot resistance were graded by average ratios of infected ring-rot dots,72 cultivars as high resistance,63 cuhivars as resistance,25 cuhivars as moderate resistance,14 cultivars as susceptive and 8 cuhivars as high susceptive.

关 键 词：梨 果实 轮纹病 抗性 

分 类 号：S661.2[农业科学—果树学]