邢丽敏;槐心体;张新忠;王忆;韩振海;

• 1:中国农业大学农学与生物技术学院园艺植物研究所

摘要(Abstract)：

【目的】为了解苹果实生砧木资源重要砧木性状的种间、居群间和株系间差异及株系内性状分离,【方法】搜集了7个种21份苹果资源的种子,建立实生群体,播种当年调查实生苗株高、干粗、叶形指数和分枝数等形态性状,当年秋芽接富士和金冠品种,第2年调查实生苗越冬抽条率、耐盐性、嫁接芽萌芽率、抽梢率和成苗率。通过接种鉴定评价腐烂病和轮纹病的抗病性。【结果】形态性状种间差异显著,平邑甜茶形态一致性好。1 a生实生苗耐越冬抽条能力种间差异大。栽培品种实生苗耐抽条能力差,且易感苹果轮纹病。八棱海棠和平顶海棠耐盐碱性较强,山定子耐盐碱性差,且居群间差异极显著。腐烂病和轮纹病的抗病性均存在种间、居群间或株系间差异及严重的株系内性状分离。平邑甜茶和小金海棠的嫁接芽抽梢率和秋季成苗率均低。【结论】多数性状不仅种间、居群间或株系间差异显著,株系内性状也严重分离。选育、应用苹果无性系砧木是迫切需求。

关键词(KeyWords)： 苹果;实生砧木;种质资源;遗传多样性

Abstract:

Keywords:

基金项目(Foundation): 国家公益性行业(农业)科研专项(201203075);; 国家苹果产业技术体系;; 国家现代苹果产业技术体系;; 农业部园艺作物营养与生理重点实验室;; 农业科研杰出人才及其创新团队项目

作者(Author): 邢丽敏;槐心体;张新忠;王忆;韩振海;

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