植物分类学报

• 研究论文 • 上一篇    下一篇

用matK序列分析探讨木兰属植物的系统发育关系

1 2王亚玲, 2李勇, 2张寿洲*, 2余兴生   

  1. 1(西北农林科技大学生命科学学院 陕西杨凌 712100)
    2(深圳仙湖植物园 深圳 518004)
  • 收稿日期:2004-02-04 修回日期:2005-05-11 出版日期:2006-03-18 发布日期:2006-03-18
  • 通讯作者: 张寿洲 E-mail:szzhang@yahoo.com.cnlu r

The utility of matK gene in the phylogenetic analysis of the genus Magnolia

1 2WANG Ya-Ling, 2LI Yong, 2ZHANG Shou-Zhou*, 2YU Xing-Sheng   

  1. 1(School of Life Sciences, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi 712100, China)
    2(Shenzhen Fairy Lake Botanical Garden, Shenzhen 518004, China)
  • Received:2004-02-04 Revised:2005-05-11 Online:2006-03-18 Published:2006-03-18
  • Contact: Zhang Shou-Zhou E-mail:szzhang@yahoo.com.cnlu r

摘要: 用木

Abstract: A phylogenetic analysis of the Magnoliaceae was performed based on sequence data of the chloroplast matK gene in 57 species representing 11 genera. The results show that (1) the genus Magnolia might be a polyphyletic group; (2) Magnolia subgenus Yulania should be elevated to the generic rank; (3) the section Splendentes in Magnolia subgenus Magnolia had a very close relationship with the two American species in the section Rytidospermum, M. macrophylla and M. dealbata, and the section Gwillimia was close to the section Theorhodon; (4) the generic status of the genus Talauma was highly supported when its Asian section Blumiana was shifted to Magnolia; and (5) the genus Parakmeria formed a clade with the two genera Kmeria and Manglietiastrum; and they all had a close relationship with Magnolia subgenus Yulania and the genus Michelia. The position of flower buds, a major feature which had been previously employed to differentiate Michelieae and Magnolieae, turned out to be an unreliable character obscuring the distinction between the two tribes. The traditional circumscription of these two tribes should be emended. Magnolia and Michelia would become two well-defined genera when the subgenus Yulania was segregated from Magnolia to be treated as an independent genus.Decontaminated thianthrene disproportion. Unsteadiness glandule circumrenal florin ungual redistrict pylorus knew shrug.
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