梨不同砧穗组合对梨衰退病的影响  

Effect of Different Rootstock/Variety Combinations on Pear Decline

作　　者：赵海静[1] 王璐[1] 孟利峰[1] 韩玉虎[1] 郭黄萍[1] ZHAO Haijing;WANG Lu;MEN GLifeng;HAN Yuhu;GUO Huangping(Ins titute of Pomology,Shanxi Academy of Agricultural Sciences,Taiyuan 030031,China)

机构地区：[1]山西省农业科学院果树研究所,山西太原030031

出　　处：《山西农业科学》2018年第6期1013-1015,1056,共4页Journal of Shanxi Agricultural Sciences

基　　金：国家现代梨产业技术体系太谷综合试验站(CARS-28-28)

摘　　要：2010—2013年对10个亚洲梨品种和2个梨砧木(杜梨(Pyrus betulaefolia)和梨实生砧)共计20个组合120个单株进行了梨树衰退病(pear decline,PD)抗性研究。在春夏季调查不同砧穗组合(6株/组合)感染PD症状,在秋季分子检测植原体感染情况。结果表明,梨树衰退病在春夏季集中暴发,但大多数植株随感病症状消失而很快复原。用限制性片段长度多态性(RFLP)法进行分子检测,部分组合可检测到植原体(苹果增殖病类群(16Sr X)C亚组),表明梨树砧穗之间的互作效应对PD发病症状有明显的影响。大多数参试砧穗组合属于耐PD感染组,其中,黄金梨/实生砧、秋黄/实生砧组合耐病性强,而晋酥/实生砧属于PD敏感组合;杜梨组合跨越抗病/敏感2个区域,黄金梨/杜梨和玉露香/杜梨属于特抗PD组合,而晋蜜梨/杜梨属于PD敏感组合。A study on pear decline disease（PD）resistance was conducted in 2010-2013 to 120 plants from 20 combination of10 Asian pear varieties and Duli（Pyrus betulaefolia）（D） and pear seedlings（PS）. PD infection symptoms of 6 plants from each combination was investigated in the spring and summer, and molecular detection conducted in the autumn as well. The results showed that PD outbroke in spring and summer, most plants recovered during the course of study, and converted into asymptomatic in the end.Nevertheless, the phytoplasma identified by restriction fragment length polymorphism（RFLP）analysis belonged to the apple proliferation group（16 Sr X）, subgroup C. The interaction effect between pear rootstock and varieity had obvious influence on PD symptoms. Most of the combinations tested were resistant to PD infection, among which, the combinations of golden pear/seedling and autumn yellow/seedling were pretty tolerant to PD, while the Jinsu/seedlings belonged to PD sensitive combination. The combination of Duli spans across the range of resistance and sensitivity, especially, the combination of golden pear/Duli and Yuluxiang pear/Duli belonged to the strong PD resistant group, while Jinmi pear/Duli combination was PD sensitive combination.

关 键 词：梨树衰退病 亚洲梨品种 砧木 杜梨 梨实生砧 植原体 

分 类 号：S436.612.1[农业科学—农业昆虫与害虫防治]