生物多样性 ›› 1999, Vol. 07 ›› Issue (1): 31-37.DOI: 10.17520/biods.1999006

• 论文 • 上一篇    下一篇

遗传多样性与濒危植物保护生物学研究进展

张大勇,姜新华   

  1. (北京师范大学生态学研究所,  北京 100875)
  • 收稿日期:1998-07-28 修回日期:1998-12-15 出版日期:1999-02-20 发布日期:1999-02-20

Progress in studies of genetic diversity and conservation biology of endangered plant species

ZHANG Da-Yong, JIANG Xin-Hua   

  1. Institute of Ecology , Beijing Normal University , Beijing  1000875
  • Received:1998-07-28 Revised:1998-12-15 Online:1999-02-20 Published:1999-02-20

摘要:

尽管对于濒危物种的遗传学人们已经进行了大量研究,但是种群遗传学在植物保护中的实际地位尚存在很大争议。濒危物种的遗传多样性可能会由于遗传漂变、近交的作用而丧失;但这种丧失更可能是濒危的结果而不是濒危的起因。遗传多样性水平与物种生存力之间没有任何必然的联系。但植物种群遗传结构如果由于自交不亲和等位基因的丧失和与亲缘种杂交造成的遗传同化而发生改变,那么它对物种生存力会产生明显负作用。

关键词: 天台山, 土壤类型, 微生物区系, 细菌生理群, 多样性

Abstract: Although there have been extensive studies on the genetics of endangered plant species , it is still highly debatable about the role of population genetics in rare plant conservation. The genetic diversity of endangered species may be lost due to genetic drift and inbreeding , but this loss is more likely to be a symptom of endangerment rather than its cause. There is no clear-cut relationship between the level of genetic diversity and species viability. Changes in the genetic structure of plant populations may exert negative influence on population persistence if this change involves loss of self2incompatibility alleles or genetic assimilation through hybridization with a reproductively compatible relative.

Key words: Tiantai Mountain, soil types, microbial flora, bacteria physiological groups, diversity