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MENG Ai-Ping, HE Zi-Can, LI Jian-Qiang, XU Li-Ming. Chromosome Numbers of Two Threatened Species of Betulaceae[J]. Plant Science Journal, 2004, 22(2): 171-173.
Citation: MENG Ai-Ping, HE Zi-Can, LI Jian-Qiang, XU Li-Ming. Chromosome Numbers of Two Threatened Species of Betulaceae[J]. Plant Science Journal, 2004, 22(2): 171-173.
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Chromosome Numbers of Two Threatened Species of Betulaceae

  • Wuhan Botanical Garden, The Chinese Academy of Sciences, Wuhan 430074, China

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  • Received Date: June 10, 2003
  • Revised Date: September 03, 2003
  • Published Date: April 27, 2004
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  • A cytological study of threatened Carpinus putoensis Cheng and Ostrya reheriana Chun was firstly made in this paper. The interphase nuclei and prophase chromosomes of C. putoensis were categorized to be complex chromocenter type and interstitial type, respectively; the metaphase chromosome number of C. putoensis was reported 2n=14x=112, ranging from (0.920 μm) to 0.230 μm in length. The interphase nuclei and prophase chromosomes of O. reheriana were categorized to be complex chromocenter type and interstitial type, respectively; the metaphase chromosome number of O. reheriana was reported 2n=2x=16, ranging from 1.15 μm to (0.468 μm) in length. These results can supply the cytological evidence for the further research on the biosystermatics and threatened mechanism of C. putoensis and O. reheriana two rare and threatened species of Betulaceae.
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