榉树半同胞家系苗期性状变异的研究  

Studies on variation of seed and seedling characters of free loss of flower of families of Zelkova schneideriana Hand.-Mazz.

作　　者：黄利斌[1] 汪企明[1] 樊丛梅 李晓储[1] 周磊 

机构地区：[1]江苏省林业科学研究院,江苏南京211153 [2]南京市中山陵园管理局,江苏南京210014

出　　处：《江苏林业科技》2001年第6期1-3,共3页Journal of Jiangsu Forestry Science & Technology

基　　金：原南京市建设委员会科研项目"中山陵珍稀树种资源选育扩繁及造景技术"(2 0 0 0 2 9)研究内容之一

摘　　要：对榉树自由授粉的半同胞家系育苗及苗期变异研究结果表明 ,10个榉树家系间种子千粒重、发芽势、场圃发芽率、苗高、地径、1级侧枝数和秋季叶色变化等性状均有显著变异 ,其中 1号家系苗木生长量最大 ,红色叶植株比例高达 80 %。各个家系均含有红、红黄和黄色 3种叶色的植株 ,但不同叶色植株比例与母树秋叶叶色具有一定的相关性。同时 。The behaviors of ten families of free loss flower of Zelkova schneideriana were compared in Nanjing district ,China,during 1999 2000.The results showed that there were significant difference between progenies in 1 000 seed weight,seed germination energy after 8 d for sowing (the seed with stratification treatments in winter),seed germination rate,shoot length and diameter(ground),branch number,and leaves color in autumn(1 yr old).Variation ranged from 15 0% to 50 0% in seed germination rate,35 8 cm to 52 9 cm in shoot length(in plastic film tubes)among ten families,and 92 9 cm to 123 9 cm in shoot length(in nursery)among four families.No.1 family had a superior growth.In autumn,the seedlings leaves turned to red or orange or yellow,each family with no single color.But the seedling number ratio of different color family was related to mother trees.

关 键 词：榉树 家系 苗期生长 秋季叶色 变异 半同胞家系 育苗 

分 类 号：S792.159[农业科学—林木遗传育种] S723.1[农业科学—林学]