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Plant Diversity ›› 1988, Vol. 10 ›› Issue (01): 1-3.

• 研究论文 •    

凌云重楼中B染色体起源的探讨

顾志建   

  1. 中国科学院昆明植物研究所
  • 出版日期:1988-02-25 发布日期:1988-02-25

STUDY ON THE ORIGIN OF B-CHROMOSOME OF PARIS CRONQUISTII

Gu Zhijian   

  1. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204
  • Online:1988-02-25 Published:1988-02-25

摘要: 对同一居群不同个体的凌云重楼(Paris cronquistii)的染色体进行了观察,发现核型结构和B染色体有一系列的变异。据此,作者对其B染色体的起源进行了分析,认为凌云重楼的B染色体是随体在次缢痕处断离后衍生。

关键词: 凌云重楼, 核型, 细胞型, B染色体起源

Abstract: In the karyotype of Paris cronquistii,the variations of chromosome structure and a series process of B-chromosomes produced by break kage of secondary constriction of satelite chromosome were found.These interesting phenomena were received by observation of experiment. The occurrence,accumulator and transmittal of B-chromosome are discussed in this paper. The author recognizes that the breakage of secondary constriction of satelite chromosome has relation to origin of B-chromosome.

Key words: P.cronquistii