苹果矮生型杂交后代筛选  

Screening of Apple Dwarf Hybrids

作　　者：鄢新民[1] 王献革[1] 李学营[1] 郝婕[1] 冯建忠[1] 

机构地区：[1]河北省农林科学院石家庄果树研究所,河北石家庄050061

出　　处：《河北农业科学》2012年第1期69-71,共3页Journal of Hebei Agricultural Sciences

基　　金：国家苹果现代农业产业技术体系项目(CARS-28);河北省科技支撑项目(11220104D-1)

摘　　要：矮化密植栽培是世界苹果生产的发展趋势,利用矮化砧木或矮生型品种是实现苹果矮化密植栽培的主要途径。在矮化苹果育种中,矮生性能的预测技术非常关键,直接影响着育种效率。本研究以16个苹果杂交组合共计4000余株苹果杂交后代为材料,选择节间长度、枝条电阻值和枝皮率等作为树体矮生评价指标,对杂交后代进行了测定。结果表明:初步筛选出节间较短(节间长度<1.55 cm)的实生后代个体200株;在此基础上,又筛选出电阻值较小(电阻值<211.3 kΩ)的个体105株;进一步又筛选出枝皮率较高的矮生型个体(枝皮率>17%)43株。有望通过复选实现突破,为苹果生产提供可用于矮化栽培的苹果(或砧木)优系。Dwarf and close planting is the development trend of world apple production. The use of dwarfing rootstocks or dwarf varieties is the main way to realize the dwarf and close planting. The prediction technique for dwarf performance is critical, which directly impacts on the breeding efficiency. More than 4 000 apple hybrids from 16 combinations were selected, the internode length, the branch resistance value and the ratio of wood to bark are determined. The results show that 200 hybrids are screened primarily with the internode length less than 1.55 cm, frrom which 105 hybrids are screened with the resistance value less than 211.3 kΩ, then 43 hybrids are further screened with the ratio of wood to bark more than 17%. The dwarf strains or rootstocks are hopeful to be selected for apple production.

关 键 词：苹果 实生后代 矮生型 节间长度 电阻值 枝皮率 

分 类 号：S661.1[农业科学—果树学]