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林业科学 ›› 1997, Vol. 33 ›› Issue (3): 219-224.

• 论文及研究报告 • 上一篇    下一篇

马尾松人工群体交配系统研究

赖焕林,王明庥   

  1. 南京林业大学 南京 210037
  • 收稿日期:1996-03-11 出版日期:1997-05-25 发布日期:1997-05-25

RESEARCH ON MATING SYSTEMS IN MAN-MADE POPULATIONS OF MASSON PINE

Huanlin Lai,Mingxiu Wang   

  1. College of Forest Resources and Environment NaNjing Forestry University, Nanjing 210037
  • Received:1996-03-11 Online:1997-05-25 Published:1997-05-25

摘要:

借助水平淀粉凝胶电泳同工酶分析方法,研究了马尾松-无性系种子园,该种子园附近一人工林,马尾松一优树收集区的交配系统。研究结果表明,该种子园的多位点异交率为: 0.792 (SE=0.062),种子园中心区与边缘区的多位点异交率分别为: 0.801 (SE=0.075), 0.800 (SE=0.067);种子园附近人工林的多位点异交率为: 0.821 (SE=0. 188),优树收集区的多位点异交率为: 0.431 (SE=0.131)。说明该马尾松种子园的异交率较低,这可能成为影响种子园种子产量和种子质量的一个制约性因子。文章讨论了影响群体交配系统的主要因子,分析了马尾松异交率较低的可能原因,并对这一方面的进一-步研究提出了一些建议。

关键词: 马尾松, 人工群体, 交配系统

Abstract:

Mating systems in three populations of Masson pine (Pinus massonina Lamb.), including a clonal seed orchard, a plantation near the seed orchard and a clone bank were studied by isozyme analysis with the help of level starch gel electrophoresis. The results were as follows: the multi-locus estimate of outcrossing rate (tm) of the seed orchard was 0.792 (se=0.062) (standard errors in parenthesis); the outcrossing rates (tm) of clones in the central blocks and in the fringal blocks were 0.801 (se=0.075) and 0.800 (se=0.067), respectively; the estimate of tm for the plantation near the seed orchard was 0.821 (se=0.188), while in the clone bank the tm was 0.431 (se=0.131). It indicated that the outcrossing rates in this seed orchard were lower, which might be an important obstacle to increase the quantity and quality of seed. The paper discussed the main factors affecting the mating systems of populations. It analyzed the probable reasons for the low outcrossing rates of Masson pine and presented some suggestion for further studies in this area.

Key words: Pinus massoniana Lamb, Man-made population, Mating system