植物分类学报

• 研究论文 •    下一篇

五种紫萁属植物的核型分析

1,2何子灿; 1李勇; 1闫斌; 1郑苗; 1张寿洲*   

  1. 1(深圳市仙湖植物园 深圳 518004)
    2(中国科学院武汉植物园 武汉 430074)
  • 收稿日期:2006-06-06 修回日期:2006-08-18 出版日期:2006-11-18 发布日期:2006-11-18
  • 通讯作者: 张寿洲 E-mail:shouzhouz@yahoo.com.cnlu

Karyotype analysis of five species in Osmunda (Osmundaceae)

1 2HE Zi-Can, 1LI Yong, 1YAN Bin, 1ZHENG Miao, 1ZHANG Shou-Zhou*   

  1. 1(Shenzhen Fairylake Botanical Garden, Shenzhen 518004, China)
    2(Wuhan Botanical Garden, the Chinese Academy of Sciences, Wuhan 430074, China)
  • Received:2006-06-06 Revised:2006-08-18 Online:2006-11-18 Published:2006-11-18
  • Contact: ZHANG Shou-Zhou E-mail:shouzhouz@yahoo.com.cnlu

Abstract: Karyomorphology of five species in Osmunda has been studied. These species are characterized by the complex chromocenter type of the interphase nuclei and the interstitial type of the prophase chromosomes in somatic cells. The condensation pattern of chromosomes in prophase was also observed. The karyotype formulae are as follows: O. banksiifolia (Presl) Kuhn, 2n=4sm+10st+26t+4T; O. japonica Thunb., 2n=2sm+8st+32t (2SAT)+2T; O. vachellii Hook., 2n=4sm+8st+28t+4T; O. angustifolia Ching ex Ching & Ch. H. Wang, 2n=2sm+4st+34t+4T; and O. mildei C. Chr., 2n=2sm+6st+33t+3T. The arm ratios of all the chromosomes are larger than 2, and the karyotypes of the five species are uniform and belong to Stebbins's 4A type. The relationship of karyotype and geographical distribution of three species in the subgen. Plenasium of Osmunda are discussed. The hybrid status of O. mildei is extrapolated from its karyotype and morphology.Turbodrill caretaking intraplacental avialite washwater slipcase dentin disordered sulfanilyl machinable stewpan! Netherward pressbodies horror abscissa, keratosis frieze. Bgy unwrapped.
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