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| 番茄耐盐分子育种研究进展 | |
| 引用本文： | 李君明,宋燕,朱彤,迟庆勇,徐和金,周永健.番茄耐盐分子育种研究进展[J].分子植物育种,2006,4(1):111-116. |
| 作者姓名： | 李君明 宋燕 朱彤 迟庆勇 徐和金 周永健 |
| 作者单位： | 1. 中国农科院蔬菜花卉研究所,北京,100081 2. 亚洲太阳种子有限公司,北京,100026 3. 新疆屯河投资股份有限公司,新疆,831100 |
| 摘 要： | 土壤盐渍化是一个世界性问题,其中由于过量施用化肥,造成土壤尤其是蔬菜保护地次生盐渍化已是一个极其严重的现象,常障碍蔬菜作物的生长、发育,导致大幅度减产,产品品质下降。虽然作物耐盐新品种的选育,一直是国内外研究的重点,但对于番茄而言,普通栽培种一般表现对盐中度敏感。目前还尚未有很明确的生理生化指标,可供育种者直接进行番茄耐盐性的鉴定,番茄耐盐机理的明确,有助于相关指标的获得。研究业已表明,番茄耐盐受QTLs控制,遗传较为复杂,影响番茄耐盐的QTL在不同生长发育的阶段也不相同。因此育种难度较大。番茄在芽期和苗期对盐害最敏感,随着株龄的增加,耐盐性也增强,而影响番茄芽期和苗期的耐盐性为少数QTLs控制,且效应较大,因此开发芽期和苗期耐盐QTLs对于番茄耐盐育种意义较大。另外,耐盐QTLs还包括组成型和非组成型两种,控制番茄耐盐的组成型或非特异QTL对耐盐性贡献较大。部分野生资源材料及个别栽培种表现出一定程度的耐盐性,为番茄耐盐育种提供了可能。利用分子标记及生物工程技术深入挖掘这些材料,可加速番茄耐盐遗传改良。本文就番茄耐盐筛选方法、耐盐资源材料,耐盐QTL定位及利用分子标记辅助选育和基因工程等手段改良番茄耐盐新品种进行了综述。 |
| 关 键 词： | 番茄 耐盐 分子育种 |
Reviews about Molecular Breeding of Salt Tolerance on Tomato |
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| Li Junming,Song Yan,Zhu Tong,Chi Qingyong,Xu Hejin,Zhou Yongjian.Reviews about Molecular Breeding of Salt Tolerance on Tomato[J].Molecular Plant Breeding,2006,4(1):111-116. | |
| Authors: | Li Junming Song Yan Zhu Tong Chi Qingyong Xu Hejin Zhou Yongjian |
| Abstract: | Soil salinization is a world wide problem. Among it, over utilization of chemical fertilization has caused sub-salinization especially in vegetable protected field and usually make seriously damage on crop growth, development, and cause the production loss and low quality. For tomato crop, the cultivars normally gave middle sensitive to the salinity. At present, no well-defined physiology and biochemical indicators could be directly used for tomato breeder to identify the germplasms with the salinity tolerance. The understanding of the mechanism for tomato salt tolerance would provide more information for it. The related researches have proved that tomato salt tolerance was controlled by QTLs and the genetics was complicated. Moreover, these QTLs were quite different during the different development stage. Hence, it could be difficult for tomato breeding with salt tolerance. Germinated tomato seeds and seedling were more sensitive to salt than mature plants. Moreover, salt tolerance QTLs include both of constitutive expression and induced expressiong. QTLs with constitutive expression or non-specific QTLs could give a more contribution for salt tolerance in tomato. Molecular marker and bioengineering could provide a convenient way to deeply explore tomato germplasms with salt tolerance and facilitate the genetic improvement. A review about molecular breeding for salt tolerance on tomato was presented in this paper including the method for screening tomato germplasms with salt tolerance, the identified tomato germplasms with salt tolerance, mapping of QTLs affected tomato salt tolerance, the selection assisted by molecular markers and gene engineer used for improvement of salt tolerance in tomato breeding. |
| Keywords: | Tomato Salt tolerance Molecular breeding |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |