作物学报 ›› 2013, Vol. 39 ›› Issue (10): 1754-1765.doi: 10.3724/SP.J.1006.2013.01754

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇


张建,Aijaz Ahmed SOOMRO,柴路,崔彦茹,王小倩,郑天清,徐建龙*,黎志康   

  1. 中国农业科学院作物科学研究所 / 农作物基因资源与基因改良国家重大科学工程,北京 100081
  • 收稿日期:2013-03-07 修回日期:2013-06-04 出版日期:2013-10-12 网络出版日期:2013-08-01
  • 通讯作者: 徐建龙, E-mail: xujianlong@caas.cn?
  • 基金资助:


Mapping of QTL for Ferrous and Zinc Toxicity Tolerance at Seedling Stage Using a Set of Reciprocal Introgression Lines in Rice

ZHANG Jian,Aijaz Ahmed SOOMRO,CHAI Lu,CUI Yan-Ru,WANG Xiao-Qian,ZHENG Tian-Qing,XU Jian-Long*,LI Zhi-Kang   

  1. Institute of Crop Sciences / National Key Facility for Crop Gene Resources & Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2013-03-07 Revised:2013-06-04 Published:2013-10-12 Published online:2013-08-01
  • Contact: 徐建龙, E-mail: xujianlong@caas.cn?



关键词: 耐亚铁毒害, 耐锌毒害, QTL, SNP, 水稻


Ferrum and zinc are essential microelements for rice, and also the heavy metal pollution elements in soil. Rice grow in lowland or acid soil is easily subjected to ferrous and zinc toxicities which harm plant growth and decrease biomass and yield in production. The aim of this study was to identify quantitative trait locus (QTL) underlying ferrous toxicity tolerance (FTT) and zinc toxicity tolerance(ZTT) of rice using a reciprocal advanced backcross introgression lines derived from a cross between Lemont (japonica) and Teqing (indica), and 308 evenly distributed single nucleotide polymorphism (SNP) markers developed from the two parents. Total of 42 putative QTLs affecting shoot height (SH), shoot dry weight (SDW) and root dry weight (RDW) under control and stress conditions and for the relative value of the stress to the control were detected, the alleles at most loci improving the tolerance of ferrous and zinc toxicities were from Lemont. Among them only four QTLs (9.52%) were detected under the two backgrounds, indicating the expression of most QTLs is specific to genetic background.Nine QTLs were detected from the same genetic background affecting the tolerance of both ferrous and zinc toxicities in which QSdw5 was expressed under the two backgrounds with the same direction and similar quantity of gene additive effect,suggesting that there is a genetic overlap between FTT and ZTT at seedling stage in rice. It is likely, therefore, to develop varieties with both FTT and ZTT in rice by introgressing and pyramiding Lemont favorable alleles of the overlapping QTLs underlying FTT and ZTT and to improve Teqing’s FTT and ZTT via marker-assisted selection (MAS).

Key words: Ferrous toxicity tolerance, Zinc toxicity tolerance, Quantitative trait locus (QTL), Single nucleotide polymorphism

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