利用Solanum pennellii LA0716渐渗系群体初步定位番茄果实硬度QTL
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

农业部园艺作物生物学与种质创制重点实验室项目


QTL Mapping of Fruit Firmness with an Introgression Line Population Derived from the Wild Tomato Species S. pennellii LA0716
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    硬度是番茄仅次于风味的品质决定因子。利用来自番茄野生资源S. pennellii LA0716 的渐渗系(IL,introgression line)群体,采用穿刺法测定完全红熟期番茄的果实硬度。结果表明,果肩部、中部和果蒂部等3个部位的硬度极显著正相关。根据渐渗系遗传图谱,对影响果实硬度的位点进行了初步定位,共检测到5个可明显提高番茄果实硬度的QTL(qF-p-1、qF-p-2、qF-p-3、qF-p-4 与qF-p-11),分别位于第1、2、3、4和11号染色体上,其中qF-p-4贡献率最大;2个可显著降低果实硬度的QTL(qS-p-4 和 qS-p-10),分别位于第4和10号染色体上,其中qS-p-10效应最大。通过比较分析发现,本文定位的多数QTL与前人在番茄野生种定位的影响硬度的QTL同位,说明番茄硬度在遗传和进化上可能具有一定的保守性。研究结果为番茄硬度QTL的精细定位、克隆及遗传改良奠定了一定的基础。

    Abstract:

    Fruit firmness is considered as essential trait for tomato fruit quality and ranks as second important of the tomato evaluation index after fruits flavor. In this study, by using the introgression line (IL)population derived from S. pennellii LA0716, the firmness of tomato were measured in three part of the red mature fruits including fruit shoulder, mid-part and pedicel through puncture test. Our results indicated that there is a significant correlation among different parts of the fruits for the firmness. Based on the genetic map of the introgression line, five QTLs named qF-p-1, qF-p-2, qF-p-3, qF-p-4 and qF-p-11 for increasing the fruit firmness were located on Chromosome 1, 2, 3, 4 and 11 respectively. In addition, two QTLs(qS-p-4 and qS-p-10)for reducing the firmness of tomato fruit were located on Chromosome 4 and 12. Among these QTLs, qF-p-4 accounted for the highest firm variation and qS-p-10 accounted for the highest soft variation. Compared with the firmness QTLs that previously identified from other wild tomato species, we found that most of the QTLs were co-localized on the tomato chromosomes. It indicated that the tomato fruit texture might be a trait which was been selected during the domestication. Results obtained in this study will be of great benefit for fine mapping and cloning of the major QTLs which control the tomato fruit firmness, and a foundation for the firmness improvement in tomato breeding.

    参考文献
    相似文献
    引证文献
引用本文

刘磊,宋燕,郑峥,等.利用Solanum pennellii LA0716渐渗系群体初步定位番茄果实硬度QTL[J].植物遗传资源学报,2015,16(2):323-329.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2014-07-08
  • 最后修改日期:2014-08-05
  • 录用日期:2015-02-03
  • 在线发布日期: 2015-02-03
  • 出版日期:
您是第位访问者
ICP:京ICP备09069690号-23
京ICP备09069690号-23
植物遗传资源学报 ® 2024 版权所有
技术支持:北京勤云科技发展有限公司