火炬松遗传资源林的生长表现

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2002-04-29
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华南农业大学学报
JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY
2001 Vol.22 No.1 P.12-17


钟伟华  石斌  周达  黄永权  张民兴  张民兴 

摘 要:对火炬松原产地耐寒与一般两类基因资源林的生长表现研究结果表明,前者保存率高,适应性强,生长均匀,差异不显著;后者则相反,保存率较低,生长优劣悬殊,差异显著,优于我国早年引入的种批,为重要的遗传改良资源,其中有10个编号较优良,它们多产自美国东南沿海,尤其是墨西哥湾各州.在31.3%入选率下,材积相对遗传增益大20.84%;2~5株小样求得的生长早-晚相关趋势与前人研究一致,唯确定程度略低.
关键词:火炬松;基因资源;生长表现;遗传增益;早-晚相关
分类号:S722.83 文献标识码:A

文章编号:1001-411X (2001) 01-0013-05

Growth Performance of the Loblolly Pine Genetic Resources

ZHONG Wei-huaCollege of Forestry, South China Agric. Univ., Guangzhou 510642, China) 
SHI BinCollege of Forestry, South China Agric. Univ., Guangzhou 510642, China) 
ZHOU DaCollege of Forestry, South China Agric. Univ., Guangzhou 510642, China) 
HUANG Yong-quanSeed and Seedling Station of the Department of Forestry, Guangdong Province, Guangzhou 510173, China) 
ZHANG Min-xingSeed and Seedling Station of the Department of Forestry, Guangdong Province, Guangzhou 510173, China) 
LI Yuan-qiuYingde Loblolly Pine Seed OrchardYingde 513000China) 

AbstractThis paper studied the growth performance of loblolly pine gene resources with in cold-hardy and regular provenances. The results indicated that the cold-hardy gene resources showed higher survival rate, better adaptability and uniformity in growth and without significant difference. The regular gene resources were the contrary, with lower survival rate, great variation in growth and significant difference among seed sources. The growth performance was superior to that of the early introduced loblolly pine seed lots in China. These provenances are the important genetic resources for tree improvement. Among these gene resources there were 10 superior numbers from the southeast coastal states in the U.S.A., especially those from the Mexican Bay States. Under 31.3% selection rate, the relative genetic gain was 20.84%. The juvenile-mature growth correlation trend derived from small samples of 25 trees, was in accordance with the former researches, only with a slightly lower the determination coefficient.
Keywords
loblolly pinegenetic resourcesgrowth performancegenetic gainjuvenile-mature growth correlation

基金项目:“七五”国家重点科技攻关(75-07-01-38);广东省科委重点课题;联合国发展计划署项目(CPR/91/153)
作者简介:钟伟华(1927-),男, 教授.
作者单位:钟伟华(华南农业大学林学院, 广东 广州 510642) 
     石斌(华南农业大学林学院, 广东 广州 510642) 
     周达(华南农业大学林学院, 广东 广州 510642) 
     黄永权(广东省林业厅种苗站, 广东 广州 510173) 
     张民兴(广东省林业厅种苗站, 广东 广州 510173) 
     李远球(英德市火炬松种子园, 广东 英德 513000) 

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收稿日期:2000年3月21日

出版日期:2001年1月1日


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