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Characterization of root architecture in an applied core collection for phosphorus efficiency of soybean germplasm

文献类型： 外文期刊

作者： Zhao, J 1 ; Fu, JB 2 ; Liao, H 2 ; He, Y 2 ; Nian, H 2 ; Hu, YM 2 ; Qiu, LJ 2 ; Dong, YS 2 ; Yan, XL 2 ;

作者机构： 1.S China Agr Univ, Root Biol Ctr, Guangzhou 510642, Peoples R China

2.S China Agr Univ, Root Biol Ctr, Guangzhou 510642, Peoples R China; Chinese Acad Agr Sci, MOA Key Lab Crop Germplasm Resources & Biotechnol, Beijing 100081, Peoples R China; Jilin Acad Agr Sci, Natl Base Transgen Plant Pilot Test & Industraliz, Gongzhuling 136100, Peoples R China

关键词： soybean;applied core collection;root architecture;P efficiency

期刊名称：CHINESE SCIENCE BULLETIN （ 影响因子：1.649； 五年影响因子：1.738 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： In the present study, we constructed an "applied core collection" for phosphorus (P) efficiency of soybean germplasm using a GIS-assisted approach. Systematic characterization and comparative analysis of root architecture were conducted to evaluate the relationship between root architecture and P efficiency and its possible evolutionary pattern. Our results found that: i) root architecture was closely related to P efficiency in soybean. Shallow root architecture had better spatial configuration in the P-rich cultivated soil layer hence higher P efficiency and soybean yield; ii) there was a possible co-evolutionary pattern among shoot type, root architecture and P efficiency. The bush cultivated soybean had a shallow root architecture and high P efficiency, the climbing wild soybean had a deep root architecture and low P efficiency, while the root architecture and P efficiency of semi-wild soybean were intermediate between cultivated and wild soybean; iii) P availability regulated root architecture.Soybean roots became shallower with P addition to the topsoil, indicating that the co-evolutionary relationship between root architecture and P efficiency might be attributed to the long-term effects of topsoil fertilization. Our results could provide important theoretical basis for improving soybean root traits and P efficiency.

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