摘要
以梓属的滇楸、黄金树、灰楸、楸树、梓树5个树种共81个不同无性系楸树为试材,采用嫩枝扦插生根的方法,研究了不同树种、不同来源地对楸树扦插生根的影响。结果表明：5个树种生根率、单株生根数和单株最长根长差异极显著,生根率变幅为10.06%-95.80%,单株生根数的变幅为1.00-16.40条,单株最长根长的变幅为1.50-16.80cm。经聚类分析将所有无性系分为生根差、生根中等、生根较优和易生根类四大类;同时根据来源地的差异,分析了63个楸树无性系的扦插生根能力,表明不同种源地树种生根率、生根数和单株最长根长的差异极显著（P〈0.01）。
The rooting experiment of softwood cuttings of 81 clones was conducted on Catalpa, including Catalpa duclouxii, C. speciosa,C, fargesii,C. bungei and C. ovata,the influnce of different species and different provenance on rooting were studied. The results showed that rooting rate, rooting number of single cutting and length of the longest root significantly differentiated within the species,in which the range of cutting rooting rate was 10. 06 %-95. 80% ,the range of rooting number was 1.00- 16. 40,the range of the longest rooting length was 1. 50-16.80 cm. Rooting capability of these clones could be divided into four categories as bad,medium,good and the easiest by cluster analysis. Based on different provenance, rooting ability of 63 clones showed significant difference among rooting rate, rooting number and length of the longest root（P〈0. 01）.
出处
《北方园艺》
CAS
北大核心
2014年第15期72-77,共6页
Northern Horticulture
基金
江苏省公益院所特色业务资助项目(BM2012058)
国家自然科学基金青年基金资助项目(31200509)
江苏省"六大人才高峰"资助项目
江苏省"333"人才资助项目
关键词
楸树
不定根
插穗
嫩枝扦插
Catalpa
adventitious root
cuttings
soft wood cuttings
