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作 者 ：顾志建

期 刊 ：云南植物研究 1988年 10卷 01期 页码：1-3

关键词：凌云重楼；核型；细胞型；B染色体起源；

Keywords:P.cronquistii,

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。

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.

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