中国北方4省区杜梨古树等种质资源调查  

Investigation of germplasm resources of Pyrus betulifolia in north region of China

作　　者：李承秀[1] 燕语 程甜甜[1] 孙忠奎 乔谦 张林[1] Li Chengxiu;Yan Yu;Cheng Tiantian;Sun Zhongkui;Qiao Qian;Zhang Lin(Taishan Forestry Science Institute,Tai’an 271000,China;Tai’an Shidai Technology Development Company Limited,Tai’an 271000,China;Shandong Institute of Pomology, Tai’an 271000,China)

机构地区：[1]泰安市泰山林业科学研究院,山东泰安271000 [2]泰安时代园林科技开发有限公司,山东泰安271000 [3]山东省果树研究所,山东泰安271000

出　　处：《江苏林业科技》2021年第4期45-48,共4页Journal of Jiangsu Forestry Science & Technology

基　　金：山东省农业良种工程项目“杜梨优良种质资源收集及高效繁育技术研究”(2019LZGC009-3);泰安市科技发展计划(引导计划)项目“杜梨古树种质资源收集及保存”(2019NS073)。

摘　　要：为深入了解我国杜梨生存现状,做好种质资源收集保存工作,调查组于2020年9月至11月,前往北方4省区12个县、区,调查杜梨单株26株(其中18株为古树),收集种质资源25份。调查发现杜梨树龄大都百年以上,最大为700 a;各单株间性状差异显著,树高为2.5—20 m,胸围为9—353 cm;26株单株中17株长势旺盛,占所调查总数的65.4%,8株长势一般,占30.8%,1株死亡占3.8%。该文调查了杜梨种质资源类型,为其良种繁育提供了原始材料,推动了种质资源收集保存进程,有利于创制杜梨新品种。In order to comprehend better the survival status of Pyrus betulifolia germplasm resources in China,the investigation team got 12 counties and districts in 4 provinces in North of China,sampled 26 trees(of which,18 are ancient trees)and obtained 25 germplasm resources from September to November,2020.Most of the investigated tree species are aged over 100,with the oldest trees aged over 700 years.There were significant differences between individual trees,as tree height ranging from 2.5 to 20 m and DBH ranging from 3 to 112.4 cm.In terms of tree vigor,most of the 26 individuals were flourishing,accounting for 65.4%of the surveyed trees,30.8%with moderate growth vigor,but 3.8%dead.The investigation provided the original stuff for enriching the germplasm resources types and breeding P.betulifolia.

关 键 词：中国北方地区 杜梨 古树 种质资源 调查 

分 类 号：S602.4[农业科学—园艺学] S661.2