Mapping QTLs for mineral accumulation and shoot dry biomass under different Zn nutritional conditions in Chinese cabbage (Brassica rapa L. ssp pekinensis)
文献类型: 外文期刊
第一作者: Wu, Jian
作者: Wu, Jian;Yuan, Yu-Xiang;Zhao, Jianjun;Song, Xiaofei;Li, Ying;Li, Xiaonan;Sun, Rifei;Wang, Xiao-Wu;Wu, Jian;Zhao, Jianjun;Koornneef, Maarten;Aarts, Mark G. M.;Koornneef, Maarten;Yuan, Yu-Xiang;Zhang, Xiao-Wei;Zhao, Jianjun
作者机构:
关键词: Brassica rapa L. ssp pekinensis;quantitative trait loci (QTL);minerals;zinc response
期刊名称:PLANT AND SOIL ( 影响因子:4.192; 五年影响因子:4.712 )
ISSN: 0032-079X
年卷期: 2008 年 310 卷 1-2 期
页码:
收录情况: SCI
摘要: Chinese cabbage (Brassica rapa L. ssp. pekinensis) is one of the most important vegetables in China. Genetic dissection of leaf mineral accumulation and tolerance to Zn stress is important for the improvement of the nutritional quality of Chinese cabbage by breeding. A mapping population with 183 doubled haploid (DH) lines was used to study the genetics of mineral accumulation and the growth response to Zn. The genetic map was constructed based on 203 AFLPs, 58 SSRs, 22 SRAPs and four ESTPs. The concentration of 11 minerals was determined in leaves for 142 DH lines grown in an open field. In addition shoot dry biomass (SDB) under normal, deficient and excessive Zn nutritional conditions were investigated in hydroponics experiments. Ten QTLs, each explaining 11.1-17.1% of the Na, Mg, P, Al, Fe, Mn, Zn and Sr concentration variance, were identified by multiple-QTL model (MQM) mapping. One common QTL was found affecting SDB under normal, deficient and excessive Zn nutritional conditions. An additional QTL was detected for SDB under Zn excess stress only. These results offer insights into the genetic basis of leaf mineral accumulation and plant growth under Zn stress conditions in Chinese cabbage.
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