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13个奇楠沉香品系在广东潮州的早期生长分析
郑卓江1,2, 刘小金1, 张启雷1, 徐大平1, 李小飞1, 方小英1
1.中国林业科学研究院热带林业研究所;2.潮州市香林沉香种植科技有限公司
摘要:
为筛选适合广东潮州地区推广种植的优良奇楠沉香品系 Aquilaria sinensis‘Qi Nan’，选择已推 广种植的 13 个品系，测定定植 1 年后树高、地径、冠幅和保存率等生长指标。结果表明：不同奇楠沉香 品系间保存率差异达极显著水平（P<0.001），蓝宝石、金丝油、凹身对试验区的环境适应能力较强，保 存率较高，西瓜叶、波浪仔保存率较低，在该地适应能力较差。不同品系的树高、地径、冠幅和高径比 的差异均极显著（P<0.001）。通过系统聚类分析，可分为 3 个类群，A 类群为金丝油，生长速度较快，B 类群为红骨尖叶和波浪仔，生长缓慢，其他品系为 C 类，生长速度适中。综合早期生长性状，金丝油生 长速度快，保存率高，适应性强，适合在潮州地区推广种植；红骨尖叶和波浪仔，保存率低，生长速度 慢，不宜于潮州地区大面积推广种植。
关键词:  奇楠沉香  品系筛选  早期评价  聚类分析
DOI：
分类号:
基金项目:土沉香易结香新品种（棋楠沉香）种质资源收集和良种选育示范及推广（202102NY01）
Analysis on the Early Growth of 13 Aquilaria sinensis ‘Qi Nan’ Clones in Chaozhou, Guangdong Province
Zhengzhuojiang1,2, Liuxiaojin1, Zhangqilei1, Xudaping1, Lixiaofei1, Fangxiaoying1
1.Research Institute of Tropical Forestry, Chinese Academy of Forestry;2.Chaozhou Xianglin Aquilaria agallocha Planting Technology Co., Ltd
Abstract:
To screen out the excellent clones of Aquilaria sinensis‘Qi Nan’(QN) suitable for promotion and planting in Chaozhou, Guangdong province, 13 main clones that have been popularized and planted were selected, and the growth indexes such as tree height, ground diameter, crown width, and preserving rate were measured 1 year after planting. The results showed that there existed a significant difference in the preserving rate among the different clones (P<0.001). The QN03, QN05, and QN02 exhibited strong adaptability to the local environment, which showed a higher preserving rate, while the preserving rate of QN06 and QN12 were low, and the adaptability was poor. Great differences (P<0.001) in height, ground diameter, crown width as well as height diameter ratio of different clones were observed. Through cluster analysis, 13 clones can be divided into three groups. Group A was QN05, with a fast growth rate. Group B included QN11 and QN12, with slow growth. Other clones were summarized in group C, with a moderate growth rate. Based on the early growth performance, QN05 showed a fast growth rate, high preserving rate, and strong adaptability, which was suitable for popularization in Chaozhou. The QN11 and QN12 with a low preserving rate and slow growth rate, which was not suitable for large-scale popularization in Chaozhou.
Key words:  Aquilaria sinensis ‘Qi Nan’  clones screening  early evaluation  cluster analysis