摘要
对云南、贵州、湖北等10～11个秃杉种源,57个单株子代的两次苗期试验研究表明,种源群体间和群体内(单株子代间)性状均存在明显的地理变异。变异与产地纬度、经度、海拔高度的线性关系不密切,但有经向相关强于纬向相关的趋势。产地日照和温度是产生变异的主要作用因子。经度偏东的贵州种源比偏西的云南种源种子质量好,生长最高,生物最大,成苗数多,封顶早,寒害轻,适应性强,湖北利用种源适应性优于云南种源,生长与其相近。这些地理变异为秃杉选择育种提供了依据和基础。
Seedling tests twice appeared that there are quite different between pro-vinances community and inter-community (among 10 to 11 provinances, 57 individual offspring ) obtained from yunnan, Guizhou, and Hubei. Lineal correlation between local latitude, longitude, height over sea, is not obvious, Without a trend which correlation between longitude is bigger than that between latitude. The main factor causing variation is com-firmed to be local sunshine and temperature.Auther's address: Dongshanq iao, Nanjing, 211153, PRC
出处
《江苏林业科技》
1993年第2期1-8,共8页
Journal of Jiangsu Forestry Science & Technology
关键词
秃杉
种源
地理变异
Taiwania flousiana
provinance
geographic variation
