| 番木瓜的核型分析 |
| |
| 引用本文： | 汪卫星,李春艳,梁国鲁.番木瓜的核型分析[J].园艺学报,2006,33(2):389-391. |
| |
| 作者姓名： | 汪卫星 李春艳 梁国鲁 |
| |
| 作者单位： | (西南大学园艺园林学院, 重庆400716) |
| |
| 摘 要： | 分析比较了‘穗中红’、‘日升’和‘美中红’3个品种的核型, 发现3个品种均具有1对中部或中间随体, 但前两个品种的随体位于第6对染色体上, 而‘美中红’位于第7对染色体上。根据前两个品种中发现存在的异形染色体, 推测番木瓜性染色体的存在。3个品种的核型公式分别表示为: ‘穗中红’2n = 2x = 18 = 16m (2SAT) + 2 sm, ‘日升’2n = 2x = 18 = 14m (2SAT) + 4 sm, ‘美中红’2n = 2x = 18 =16m (2SAT) + 2 sm。3个品种均属于“2A”核型, 但核型有一定的区别。
|
| 关 键 词： | 番木瓜 核型 异形染色体 性染色体 |
| 文章编号： | 0513-353X（2006）02-0389-03 |
| 收稿时间： | 2005-04-29 |
| 修稿时间： | 2005-04-292005-12-27 |
Studies of Karyotype in Carica papaya |
| |
| Wang Weixing,Li Chunyan,Liang Guolu.Studies of Karyotype in Carica papaya[J].Acta Horticulturae Sinica,2006,33(2):389-391. |
| |
| Authors: | Wang Weixing Li Chunyan Liang Guolu |
| |
| Institution: | (College of Horticulture and Landscape, Southwest University, Chongqing 400716, China) |
| |
| Abstract: | Analyzed karyotypes of three varieties of Carica papaya including ‘Suizhonghong ’,‘Risheng’and ‘Meizhonghong’. The results showed that they all have a pair ofmedian satellites located on the sixth pair chromosomes of ‘Suizhonghong’ and ‘Risheng’ and on the seventh pair chromosomes of ‘Meizhonghong’. And we analyzed the heterochromosomes in ‘Suizhonghong’and ‘Risheng’. According to the results, we primarily discussed that there are sex chromosomes or not in Carica papaya. The karyotype formulas of three varieties: ‘Suizhonghong’, 2n = 2x = 18 = 16m (2SAT) + 2 sm; ‘Risheng’, 2n = 2x = 18 = 14m (2SAT) + 4 sm; ‘Meizhonghong’, 2n = 2x = 18 = 16m (2SAT) + 2 sm, and three karyotypes all are “2A”, but there are some differences among them. |
| |
| Keywords: | Carica papaya Karyotype Heterochromosomes Sex chromosome |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《园艺学报》浏览原始摘要信息 |
| 点击此处可从《园艺学报》下载免费的PDF全文 |
|
