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• 研究论文 •    

山茶属17个种的核形态学研究

顾志建;孙先凤   

  1. 中国科学院昆明植物研究所,昆明650204
  • 出版日期:1997-04-25 发布日期:1997-04-25

A KARYOMORPHOLOGICAL STUDY OF SEVENTEEN SPECIES OF CHINESE CAMELLIA

Gu Zhijian, Sun Xianfeng   

  1. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204
  • Online:1997-04-25 Published:1997-04-25

摘要: 研究了山茶属(Camellia)的9个组17个种的细胞核形态结构,它们的问期核和分裂前期染色体的构形均为球形前染色体形和中间形。体细胞分裂中期的染色体构形,即核型分别为:红山茶组:l.贵州红山茶(C.kweichowensis)2n=90=62m(2sat)+22sm+6st,2.南山茶(C.semiserrata)2n=30=23m(4sat)+5sm+2st,3.木果红山茶(C.xylocarpa)2n=60=32m(lsat)+24sm(2sat)+4st;茶组:4.大理茶(C.taliensis)2n=30=23m+7sm,5.马关茶(C.makuanica)2n=30=20m+10sm,6.紫果茶(C.purpurea)2n=30=22m+6sm+2st,7.四球茶(C.tetracocca)2n=30=2lm+9sm;油茶组:8.茶梨(C.octopetala)2n=30=2lm(lsat)+7sin+Zst,9.高州油茶(C.gauchowensis)2n=30=17十12smn+lst;连蕊茶组:10.贵州连蕊茶(C.costei)2n=30=2lm(2sat)+7sm+2st;瘤果茶组:11.红花瘤果茶(C.rubituberculata)2n=30=19m(2sat)+10sm+lst,12.狭叶瘤果茶(C.neriiflora)2n=30=19m(2sat)+9sm+2st;离蕊茶组:13.尖齿离蕊茶(C.acutiserrata)2n=30=23m+7sm;毛蕊茶组:14 文山毛蕊茶(C.wenshanensis)2n=30=20m+6sm+4st,15.长尾毛蕊茶(C.caudata)2n=60=42m+16sm+2st;金花茶组:16.显脉金花茶(C.euphlebia)2n=30=23m+7sm;小黄花茶组:17.小黄花茶(C.luteoflora)2n=30=16m+10sm+4st。No.l,3,5,6,9~15,17的核型分析为首次报道。

关键词: 山茶属, 染色体, 核形态学

Abstract: Seventeen species in nine sections of genus Camellia were karyomorphologically studied. They share the round prochromosome type of the resting nuclei and the interstitial type of the prophase chromosomes in somatic cells. The karyotypes at mitotic metaphase given are listed as follows:1. 2n= 90= 62m(2sat)+22sm+6st for C. kweichowensis, 2. 2n= 30 = 23m(4sat)+5sm+ 2stfor C. semiserrata, and 3. 2n= 60= 32m(1sat) + 22sm+ 2sm(sat)+4st for C. xylocarpe in section Camellia. 4. 2n = 30= 23m+7sm for C. taliensis, 5. 2n = 30 = 20m+10sm for C. makuanica, 6. 2n =30 = 22m+ 6sm+ 2st for C porporea, and 7.2n = 30 = 21m+9sm for C. Ietracocca in section Tea. 8. 2n= 30= 2lm(lsat) + 7sm+ 2st forC. octopetala, etc.

Key words: Camellia, Chromosome, Karyomorphology