美国山核桃矮化砧的筛选

勒栋梁; 李永荣; 彭方仁; 王克春; 何海洋; 李小飞

doi:10.3969/j.issn.1000-2006.2015.04.003

美国山核桃矮化砧的筛选

勒栋梁,李永荣,彭方仁,王克春,何海洋,李小飞

南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (04) : 13-18.

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南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (04) : 13-18. DOI: 10.3969/j.issn.1000-2006.2015.04.003

专题报道

美国山核桃矮化砧的筛选

勒栋梁^1,2,李永荣²,彭方仁^1*,王克春¹,何海洋¹,李小飞¹

作者信息 +

The selection of dwarfing rootstock of Carya illinoensis

LE Dongliang^1,2,LI Yongrong²,PENG fangren^1*,WANG Kechun¹,HE Haiyang¹,LI Xiaofei¹

Author information +

文章历史 +

摘要

以美国山核桃9株自由授粉结果母树的种子分家系播种的1年生实生苗和未知亲本的野生混合种子播种的1年生实生苗为材料,研究了美国山核桃半同胞家系苗期生长状态和遗传特性; 依据株高表型对苗圃的1年生实生苗进行了矮化苗选择,并对筛选苗进行了集中移栽养护、调查和复选。结果表明:不同美国山核桃半同胞家系1年生实生苗的苗高和茎粗有差异,且茎粗和苗高呈显著正相关; 半同胞家系及其混合群体子代苗的茎粗和苗高均呈正态分布的特点; 茎粗和苗高受遗传因素影响均较大,遗传力分别为0.88和0.89。在苗圃中筛选出嫁接未剪砧矮化苗499株和矮化实生苗531株,经移栽和1个生长季的养护,得健壮嫁接未剪砧矮化苗280株,矮化实生苗382株; 经复选,获得极矮化美国山核桃已嫁接单株10个和实生单株12个。

Abstract

We used one year old seedlings propagated by open pollinated seeds from nine parent trees and other seeds from unknown parent tress of pecan(Carya illinoensis)as testing materials. The pecan seedling growth and genetic characteristics of half-sib families were studied. Dwarfing rootstock were selected based on the height phenotype, and then transplanted and investigated.The results showed that the height and stem diameter of different half-sib family seedlings were different, and stem diameter and height were significantly correlated. Stem diameter and height of half-sib progeny and a mixed population of seedlings showed a normal distribution characteristics. Stem diameter and height were highly influenced by genetic factors The heritability of stem diameter and height were 0.88 and 0.89, respectively. 499 grafted but not stumped plants and 531 dwarfing seedlings were selected in the nursery. After one season’s maintenance, 280 strong grafted but not stumped plants and 382 dwarfing seedlings were preserved. Ten grafting plants and twelve dwarfing seedlings were selected in the second round selection.

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勒栋梁,李永荣,彭方仁,王克春,何海洋,李小飞. 美国山核桃矮化砧的筛选[J]. 南京林业大学学报（自然科学版）. 2015, 39(04): 13-18 https://doi.org/10.3969/j.issn.1000-2006.2015.04.003

LE Dongliang,LI Yongrong,PENG fangren,WANG Kechun,HE Haiyang,LI Xiaofei. The selection of dwarfing rootstock of Carya illinoensis[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2015, 39(04): 13-18 https://doi.org/10.3969/j.issn.1000-2006.2015.04.003

中图分类号： S723

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基金

收稿日期:2015-03-02 修回日期:2015-05-17基金项目:国家林业公益性行业科研专项项目(201304711); 江苏省林业三新工程项目 [lysx2014(047)] 第一作者:勒栋梁,博士生。*通信作者:彭方仁,教授。E-mail: frpeng@ njfu.edu.cn。引文格式:勒栋梁,李永荣,彭方仁,等. 美国山核桃矮化砧的筛选[J]. 南京林业大学学报:自然科学版,2015,39(4):13-18.