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作 者 ：涂忠虞 潘明建

期 刊 ：林业科学 1984年 20卷 1期 页码：26-34

关键词：柳树；

摘 要 ：对10种柳树20个无性系的一年生扦插苗的苗高(H)、单叶面积(a),单株叶面积(A)、侧枝长(L)、侧枝干重(l)、苗干干重(h),净光合速率(t)和单株干物质生产速率(T)等性状进行了测定。应用方差分析、相关分析和通径分径的方法,研究其光合特性的遗传变异和相关。结果表明:柳树种间及无性系间光合特性的遗传变异是很显著的,单株叶面积对苗高直接影响最大,其P_(H.A)=11.3338,苗高与光合性状相关系数组分中,也都明显反映出单株叶面积强烈的正向作用。因此,增加单株叶面积是培育用材柳树的关键。

Abstract:Plant height (H), leaf area (a), total leaf areas of individual plant (A), length of branch (L), dry weight of stem (h), net photosynthetic rate (t) and dry matter productivity of each plant (T), etc. were measured in annual cuttings of 20 clones of 10 willow species. Genetic variations and correlations of photosynthetic characteristics were studied by means of variance, correlation and path analysis. Results show that genetic variations of photosynthetic characteristics among species and clones varied considerablly. Direct influence of total leaf areas on plant height is greatest, that is P_(HA)=11.3838. The components of correlative coefficients between plant heigh and photosynthetic characteristics also show significantly positive effect of total leaf areas (A). Therefore the key factor for breeding willows for timber production is to increase total leaf areas of the individual plant.

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