植物分类学报

• 研究论文 • 上一篇    下一篇

地黄属和崖白菜属等位酶的变异研究

1 2李晓东; 1李建强*; 1昝艳燕   

  1. 1(中国科学院武汉植物园 武汉 430074)
    2(中国科学院研究生院 北京 100049)
  • 收稿日期:2006-03-20 修回日期:2007-03-16 出版日期:2007-07-18 发布日期:2007-07-18
  • 通讯作者: 李建强 E-mail:lijq@rose.whiob.ac.cnlu

Allozymic variability in Rehmannia and Triaenophora (Scrophulariaceae)

1 2LI Xiao-Dong, 1LI Jian-Qiang*, 1ZAN Yan-Yan   

  1. 1(Wuhan Botanical Garden, the Chinese Academy of Sciences, Wuhan 430074, China)
    2(Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2006-03-20 Revised:2007-03-16 Online:2007-07-18 Published:2007-07-18
  • Contact: LI Jian-Qiang< E-mail:lijq@rose.whiob.ac.cnlu

Abstract: Fifty-two plant samples from six species of Rehmannia and two species of
Triaenophora of Scrophulariaceae were investigated using ultra-thin slab IEF-PAGE in this
study. The results showed that forty-five alleles of eighteen loci were present in seven
enzymatic systems, and seventeen of eighteen loci were polymorphic. The data further
determined by Biosys-1 indicated that individuals of the same species exhibited relatively
strong genetic homogeneity, while individuals of different species showed statistically
significant genetic heterogeneity. We also found that among the eight species, except R. elata
and R. piasezkii, six showed relatively obvious statistically significant genetic differentiation.
Moreover, the eight species could be placed into two groups according to cluster analysis; one
group consists of T. shennongjiaensis and T. rupestris, and the other consists of R. glutinosa,
R. solanifolia, R. chingii, R. henryi, R. elata, and R. piasezkii. The results also showed that in
Rehmannia, R. elata and R. piasezkii were most genetically related to each other, while R.
glutinosa and R. piasezkii were least genetically related. Allozyme study suggested that R.
elata and R. piasezkii should not be regarded as two distinct species. Rehmannia and
Triaenophora shared highly genetic identity with many similar characteristics in their
morphology and life history, indicating their divergence time might not be very long.

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