【作者】 汪企明； 吴礼才； 冯沛熙； 许德钰； 李永忠； 余金柱； 孙玉林； 吴政民； 石有光；

【Author】 Wang Qiming wu Licai (Forestry Research Institute of Jiangsu) Feng Peixi Xu Deyu Li Yongzhong (Dongshanqiao Forest Farm,Jiangnin County) Yu Jingzhu Sun Yulin Wu Zhenming Shi Youguang (Forestry Research Institute of Laoshan Forest Farm)

【机构】 江苏省林业科学研究所； 江宁县东善桥林场； 南京市老山林场林科所；

【摘要】 对湿地松35个种源(来源于美国湿地松自然分布区的8个州,纬度N26°～34°30′)以及广东湿地松和2个对照树种(安徽火炬松和江苏马尾松),在江苏3个试验点进行了研究.试验从1980至1992年,不同种源和树种间生长、形态、适应性变异显著。有的变异与原产地地理、气候因子相关(如树高与纬度等),而大部分相关不显著,变异的随机性大,不同地理种源间差异显著,但种源×地点互作不显著.用生长、形态和适应性的8个变异因子对美国湿地松种源进行聚类,可划分为3个群体。在佛罗里达北部、佐治亚州和南卡州南部有一个优良种源分布区。在自然分布区以北的种源生长最差.其它的大部分种源都比较相似。广东台山湿地松与这次试验的美国种源差异较大.更多还原

【Abstract】 The provenance trial,with 35 seed sources of slash pine obtained from its natural range in USA（8 states and latitude from 26°to 34°30’） and including loblolly pine from Anhui and native masson pine,were carried out at 3 locations in Jiangsu from 1981 to 1991.Among different provenances, there are significant variations of growth,morphological character,adaptation. Some variations,such as tree hight and latitude,are related to geographic and climatic factors,but the main variations are not and appear to be random pattern.There is a great geographic variation,but the interaction between provenace and site is not significant.According to their growth,morphological characters,adaptation and other 5 factors,the USA provenances could be divided into 3 groups by cluster analysis:（1）"Optimum region"(1983,S₁₁, S₁₄,S₃;N.Fla.,S.Geo.,S.C.),（2）"Northern",which is out of the natural range,is the worst(1983,S₁₈,S₁₂).（3）"Others"（S.Fla.,Lou.,Ala., Miss.,N.C.）.There is a obvious difference between the slash pine fr（?）m Taishan Guangdong and the USA slash pine sources.更多还原