马褂木种源在南京的适应性评价  

The adaptability of Liriodendron chinense introduced from different provenances to Nanjing

作　　者：周琦[1] 徐立安[1] 王章荣[1] 惠利省[1] 

机构地区：[1]南京林业大学林木遗传与生物技术省部共建教育部重点实验室,南京210037

出　　处：《林业科技开发》2014年第4期72-75,共4页China Forestry Science and Technology

基　　金：江苏高校优势学科项目(PAPD);江苏高等学校协同创新计划(CIP)

摘　　要：利用栽培在南京林业大学树木园的13个地理种源马褂木植株,经连续5年的观测,研究各种源的适应竞争与生长表现。结果表明,各种源植株的保存率存在极显著差异,贵州黎平种源表现出较强的适应性,其保存率达72%,而福建柘荣种源适应性最差,保存率仅为8%。生长表现方面,种源间树高、胸径及年均树高生长量均存在极显著差异。对各种源的保存率和生长量进行综合比较,以贵州黎平、湖北鹤峰及浙江松阳3个种源表现较好,可作为南京地区的优良种源推广;而江西庐山、陕西汉中和云南金平3个种源则表现较差,不适宜在南京地区引种栽培。其中,福建柘荣种源在试验过程中个体大量死亡,原因在于该种源主要来于近交群体,近交衰退可能是存活率较低的主要原因。To study the adaptability of competition and the growth performance of seedlings among different provenances, the seedlings of Liriodendron chinense from 13 provenances cultivated in Nanjing region had been observed and investigated across five consecutive years. The results showed that： the conservative rates of the seedlings were significantly different. Liping provenance exhibited stronger adaptability with the preserving rate of 72% , while which of the Zherong provenance was merely 8%. According to the growth performance, the tree height, DBH （ diameter of breast-height） and annual height growth also presented the significant difference among different provenances. Considering comprehensive comparison of the preserving rate and the growth, Liping, Hefeng and Songyang provenances exhibited better, and they could be selected as superior provenances in Nanjing. However, Lushan, Hanzhong and Jinping provenances exhibited worse, which showed that they were not suitable for introduction and cuhivation in Nanjing. During the course of the experiments, great numbers of seedlings from Zherong provenances died. The cause lay in the fact that the individuals mainly came from inbreeding population, and the inbreeding depression might be the main factors influencing the lower preserving rate.

关 键 词：马褂木 种源试验 保存率 生长量 适应性 引种 

分 类 号：S7-4[农业科学—林学]