植物分类学报

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知母染色体核型的研究

李林初, 徐炳声   

  1. (复旦大学生物系)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1983-11-18 发布日期:1983-11-18
  • 通讯作者: 李林初

Karyotype Analysis of Anemarrhena asphodeloides Bunge (Liliaceae)

Li Lin-Chu, Hsu Ping-Sheng   

  1. (Department of Biology, Futan University)
  • Received:1900-01-01 Revised:1900-01-01 Online:1983-11-18 Published:1983-11-18
  • Contact: Li Lin-Chu

Abstract: A karyotypical analysis of Anemarrhena asphodeloides Bung. of the monotypic genus Anemarrhena Bung. (Liliaceae) was carried out for the first time. The number of chromo- somes in root-tip cell of the species was found to be 22, agreeing with that reported by Sato[12], although inconsistent in some other respects, such as position of  centromeres, length of chromosomes, and nucleoli, etc. (Table 1 ). According to the terminology defined by Levan et al.[8], the karyotype formula is therefore 2n=22=2sm (SAT)+2sm+18m. Photomicrographs of the chromosome complements and idiogram of the karyotype are given   Fig. 1 and 2).   The karyotype of Anemarrhena asphodeloides shows explicitly to be asymmetrical, with three pairs of long chromosomes and eight pairs of short chromosomes. This specialized feature, when considered together with the rare occurrence of the basic chromosome number of 11 of the genus within the Tribe Asphodeleae of Liliaceae (see Table 1), suggests that the genus Anemarrhena is probably a rather specialized one, which has scarcely any intimate relationship with the other genera of the above tribe. The fact that this specialized karyotype is associated with certain trends of morphological specialization, such as flowers possessing three stamens only, gives support to the above suggestion. But, it is impossible to draw a more precise conclusion without a more thorough and comprehensive investigation of the species in question.Decontaminated thianthrene disproportion. Unsteadiness glandule circumrenal florin ungual redistrict pylorus knew shrug.
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