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Lin L, He J, Wang X, Wang J, Lv X, Liao M, Wang Z, Tang Y, Liang D, Xia H, Lai Y. Cadmium accumulation characteristics of F1 hybrids by reciprocal hybridizing of Solanum nigrum in two climate-ecology regions. Environ Sci Pollut Res Int 2016; 23:18842-18849. [PMID: 27318483 DOI: 10.1007/s11356-016-7089-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 06/13/2016] [Indexed: 06/06/2023]
Abstract
Different ecotypes of crop hybridization can produce heterosis effects and have wide applications in plant breeding. In this study, seedlings of cadmium (Cd) hyperaccumulator Solanum nigrum were collected from two different climate-ecology regions of the western Sichuan Basin, China, to carry out reciprocal hybridizing and to study the Cd accumulation characteristics of F1 hybrids of S. nigrum. In the two pot experiments (high and low soil Cd concentration), the biomass and Cd extraction of reciprocal hybridizing F1 hybrids were higher than those of the parents, but the Cd content in different organs was lower than those of the parents. These results indicate that the biomass and Cd extraction of F1 hybrids show over-parent heterosis, and the Cd content shows hybrid weakness. In the field experiment, the variety of the biomass, Cd content, and Cd extraction of reciprocal hybridizing F1 hybrids were the same as the pot experiments, and the Cd extraction by shoots of reciprocal hybridizing F1 hybrids increased by 17.20 and 23.08 %, relative to the two higher parents. Therefore, the reciprocal hybridizing S. nigrum of different climate-ecology regions could be efficiently used to improve the phytoremediation ability of S. nigrum to Cd-contaminated soil.
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Affiliation(s)
- Lijin Lin
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jing He
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xun Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jin Wang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiulan Lv
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ming'an Liao
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China.
| | - Zhihui Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yi Tang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Dong Liang
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hui Xia
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Yunsong Lai
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
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