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Phenotypic and genetic dissection of the contents of important metallic elements in hybrid rice grown in cadmium-contaminated paddy fields

文献类型： 外文期刊

作者： Liu, Tengfei 1 ; Hu, Wenbin 1 ; Weng, Lvshui 2 ; Deng, Lihua 2 ; Li, Jinjiang 2 ; Yu, Jianghui 2 ; Zhou, Zheng 1 ; Liu, Ye 1 ; Chen, Caiyan 2 ; Sheng, Teng 3 ; Zhao, Zhenghong 1 ; Xiao, Guoying 2 ;

作者机构： 1.Hunan Acad Agr Sci, Hunan Rice Res Inst, Changsha 410125, Peoples R China

2.Chinese Acad Sci, Key Lab Agroecol Proc Subtrop Reg, Inst Subtrop Agr, Changsha 410125, Peoples R China

3.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Inst Plant Physiol & Ecol, Lab Photosynth & Environm Biol, Shanghai 200032, Peoples R China

4.Chinese Acad Sci, Innovat Acad Seed Design, Beijing 100101, Peoples R China

关键词： Cadmium; Zinc; Hybrid rice; Parental line; Heritability; General combining ability

期刊名称：HELIYON （ 影响因子：4.0； 五年影响因子：4.1 ）

ISSN：

年卷期： 2023 年 9 卷 9 期

页码：

收录情况： SCI

摘要： Rice (Oryza sativa L.) is a staple food that feeds over half of the world's population, and the contents of metallic elements in rice grain play important roles in human nutrition. In this study, the contents of important metallic elements were determined by ICP-OES, and included cadmium (Cd), zinc (Zn), manganese (Mn), copper (Cu), iron (Fe), nickel (Ni), calcium (Ca), and magnesium (Mg) in brown rice, in the first node from the top (Node 1), in the second node from the top (Node 2), and in roots of 55 hybrids and their parental lines. The heritability of metallic element contents (MECs), the general combining ability (GCA) for MEC, and the correlation between MECs in different organs/tissues of hybrids were also analyzed. The results indicated that: (1) there was a positive correlation between the contents of Cd and Zn in nodes and roots, but a negative correlation between the contents of Cd and Zn in brown rice of the hybrids(2) the GCA for MECs can be used to evaluate the ability of the parental lines to improve the metal contents in brown rice of the hybrids(3) the contents of Cd, Zn, Ca, and Mg in brown rice were mainly affected by additive genetic effects(4) the restorer lines R2292 and R2265 can be used to cultivate hybrids with high Zn and low Cd contents in the brown rice.

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