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濒危植物杜鹃红山茶的细胞学研究(英文)

Karyological Study on the Endangered Species Camellia azalea (Theaceae)

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【作者】 王霜王仲朗梁静管开云

【Author】 WANG Shuang1,2, WANG Zhong-Lang1, LIANG Jing1, GUAN Kai-Yun1(1 Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China)

【机构】 中国科学院昆明植物研究所中国科学院昆明植物研究所 云南昆明650204中国科学院研究生院北京100049云南昆明650204

【摘要】 报道了杜鹃红山茶(Camellia azalea)的细胞学资料。其间期核为球形前染色体型,有丝分裂前期染色体为中间型。核型公式为2n=2x=30=28m(1SAT)+2sm,核型类型属于Stebbins的1B型。第3、4、9、10、11、12条染色体的长臂上具有次缢痕,第15条染色体的短臂上具随体。细胞学证据支持杜鹃红山茶在山茶组中较为原始的推断,并为人工杂交育种时亲本的选择提出了一些建议。

【Abstract】 The chromosome number and karyotype of Camellia azalea were reported here for the first time. The species showed in somatic cells the round prochromosome type of the interphase nuclei and the interstitial type of the prophase chromosomes. It was a diploid, and the karyotype could be formulated as 2n=2x=30=28m (1SAT)+2sm, belonging to Stebbins’ 1B type. The third, fourth, ninth, tenth, eleventh and twelfth chromosomes had secondary constriction respectively, and one satellite had been found on the fifteenth chromosome. The cytological results supported the suggestion that C.azalea was primitive species in Sect. Camellia of the genus Camellia. A clue on selecting parents was also proposed due to the chromosome numbers and the position in Sect. Camellia.

【关键词】 杜鹃红山茶核型育种
【Key words】 Camellia azaleaKaryotypeBreeding
【基金】 This paper was supported by Natural Sciences Foundation of Yunnan Province (2001C0010Z)
  • 【文献出处】 云南植物研究 ,Acta Botanica Yunnanica , 编辑部邮箱 ,2007年06期
  • 【分类号】Q942
  • 【被引频次】20
  • 【下载频次】233
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