...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Caryologia: Giornale de Citologia, Citosistematica e Citogenetica >Decaploidy in Rosa praelucens Byhouwer (Rosaceae) Endemic to Zhongdian Plateau, Yunnan, China
【24h】

Decaploidy in Rosa praelucens Byhouwer (Rosaceae) Endemic to Zhongdian Plateau, Yunnan, China

机译：Dec AP lo ID yin Rosa PR AE露出en SB以后玩儿 (Rosaceae) endemic to Z红点plateau, Yunnan, China

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Genus Rosa (Rosaceae) has a base chromosome number of x= 7. Ploidy levels of wild species range from 2n = 2x = 14 to 2n = 8x = 56. In this paper, one decaploid, the highest naturally occurring ploidy never reported before in the genus was detected in the karyological study of an endemic wild species, R. praelucens Byhouwer to Zhongdian Plateau, Yunnan, China. Its karyotype formula was 2n =10x = 70 = 2st + 6sm + 62m and the karyotype was 2B. Chromosome No. 6 was subterminal. Chromosome No. 15, No. 22 and No. 23 were submedian. According to its karyomorphology, R. praelucens derived not from auto polyploidization directly but from inter-specific hybridization. Polyploidization and inter-species hybridization both might have played important roles in the origin of R. praelucens associated with effect of high altitude environment. Further research on this species is warranted to provide helpful evidences to understand the differentiation and evolution of the Genus Rosa, and even clues to trace the process of speciation in Sino-Himalayan region.
机译：罗莎属（蔷薇科）的基本染色体数为x =7。野生物种的倍性水平为2n = 2x = 14至2n = 8x =56。在本文中，一种十倍体是自然界中最高的倍性，以前从未报道过。该属是在中国云南中甸高原的一种特有野生物种R. praelucens Byhouwer的核必育研究中检测到的。其核型公式为2n = 10x = 70 = 2st + 6sm + 62m，核型为2B。 6号染色体位于亚末端。 15号，22号和23号染色体为中等值。根据其核形态，R。praelucens并非直接来自自身多倍体化，而是来自种间杂交。多倍体化和种间杂交都可能在与高海拔环境影响有关的R. praelucens起源中发挥重要作用。有必要对该物种进行进一步的研究，以提供有用的证据，以了解罗莎属的分化和进化，甚至为追溯中喜马拉雅地区的物种形成过程提供线索。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号