攀枝花市核桃品种园无性系幼树期前期生长研究初报  

A Study of the Early Growth of Clonal Saplings in the Walnut Variety Orchard in Panzhihua

作　　者：李恒[1] 顾国栋[1] 刀丽平 唐平[1] 张春花[1] 

机构地区：[1]攀枝花市农林科学研究院,四川攀枝花617000

出　　处：《四川林业科技》2013年第4期5-9,共5页Journal of Sichuan Forestry Science and Technology

基　　金：攀枝花市科技计划项目"攀枝花市核桃产业发展关键技术研究"(2009CY-N-1(3))

摘　　要：攀枝花市农林科学研究院从云南省大理州引进当地核桃无性系18个,并收集本地核桃栽培无性系10个,选用嫁接繁殖方式在普威镇建成核桃品种收集园。通过品种无性系幼树期树高、接穗直径和分枝量等指标的测定分析,结果表明:树高重复力为0.57,接穗平均直径重复力为0.72,分枝数重复力为0.65。经多重比较,无性系MH1、RH1、YH1、YH10、YH17、YH18、YH9、YH7和YH16,这9个无性系的三个生长量指标都显著优于其它无性系,其接穗直径或分枝数显著高于该指标的平均值,且变异系数较小,初步筛选出的这9个无性系将其作为核桃优良无性系重点研究与选育对象。Panzhihua Academy of Agriculture and Forestry Sciences introduced 18 local walnut clones and collected 10 local walnut planting clones from Dali of Yunnan province, then a collection orchard of wal- nut varieties was established in Puwei town by use of the grafting propagation mode. Through analysis of clonal saplings＇ tree height, diameter and branching of scion, the results showed that tree height repeat- ability was 0. 57, the average diameter of scion repeatability was 0. 72, the number of branches repeatabili- ty was 0. 65. By multiple comparison, clones MH1, RH1, YH1, YH10, YH17, YH18, YH9, YH7 and YH16,their three growth indexes were significantly better than the other clones, the scion diameter or number of branches of them were significantly higher than the average of the index value, and the coeffi- cient of variation was small. The initially screened 9 clones would be selected as the focus research and breeding objects of fine walnut clones.

关 键 词：核桃 无性系 幼树期 重复力 

分 类 号：S664.1[农业科学—果树学]