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当前位置: 首页 > 文章 > 梨属矮生资源的发现及主要性状评价 园艺学报 2015,42 (11) 2253-2260
Position: Home > Articles > The Discovery of Natural Dwarf Mutant of Pyrus and the Evaluation of the Main Characters Acta Horticulturae Sinica 2015,42 (11) 2253-2260

梨属矮生资源的发现及主要性状评价

作  者：
马春晖;王然;宋健坤;李鼎立;杨英杰
单  位：
青岛农业大学园艺学院
关键词：
梨属;矮生变异;性状评价
摘  要：
2009年在山东沂蒙山区梨野生资源调查中发现梨属矮生型变异株系,通过枝接方式嫁接在青岛农业大学试验站6年生豆梨砧木成年大树上。多年实地调查以及对转接材料植物学性状和生物学习性观察结果表明:该变异株树形紧凑,枝条节间极短,与普通杜梨差异明显;在连续转接多次后矮生性状能够稳定保持,病毒学检测无明显异常;除节间短外,在枝条的绒毛、果实形状、叶片等方面与杜梨和豆梨存在明显差异,并依据田间调查编号命名为‘PY-9'。这一梨属矮生资源材料的发现,为今后梨矮生机制研究及砧木矮化育种提供了宝贵的优异种质材料。
译  名：
The Discovery of Natural Dwarf Mutant of Pyrus and the Evaluation of the Main Characters
作  者：
MA Chun-hui;WANG Ran;SONG Jian-kun;LI Ding-li;YANG Ying-jie;College of Horticulture,Qingdao Agricultural University;
关键词：
Pyrus;;dwarf mutant;;evaluation
摘  要：
Dwarf mutant type was discovered during the investigation of wild pear resources in the Yimeng Mountain Area,and the mutant shoots were grafted on adult trees in the experimental station of Qingdao Agricultural University in 2009.The botanical characteristics,biological habits and the heritable stability of dwarf property were observed.The results showed that the mutant tree was compact with very short internodes of shoots,and obviously different from the general Pyrus betulaefolia.Moreover,the dwarf property kept stable after transfer grafting for many times on the adult trees,and virology test showed no obvious abnormality.Besides internodes,the villi of shoots,fruit shape,leaf,etc were obvious difference as comparison with P.betulaefolia and P.calleryana,and preliminary could be confirmed as a natural dwarf mutant type of the genus Pyrus,and named as 'PY-9' on the basis of field investigation number.The discovery of this resource material,provided special genetic resources for the future research on the pear dwarf mechanism and dwarf rootstock breeding.

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