文献类型： 外文期刊

作者： Yang, Xiaomeng ¹ ; Mandal, Md Siddikun Nabi ¹ ; Diao, Henan ³ ; Du, Juan ¹ ; Pu, Xiaoying ¹ ; Li, Xia ¹ ; Yang, Jiazhen ¹ ; Zeng, Yawen ¹ ; Li, Zichao ⁵ ; Li, Jianbin ³ ; Hossain, Akbar ² ; Ali, Muhammad Kazim ⁶ ;

作者机构： 1.Yunnan Acad Agr Sci, Biotechnol & Germplasm Resources Inst, Agr Biotechnol Key Lab Yunnan Prov, Sci Observat Stn Rice Germplasm Resources Yunnan,K, Kunming 650205, Yunnan, Peoples R China

2.Bangladesh Wheat & Maize Res Inst, Dinajpur 5200, Bangladesh

3.Yunnan Agr Univ, Coll Agron & Biotechnol, Kunming 650201, Peoples R China

4.Heilongjiang Acad Agr Sci, Heihe Branch, Heihe 164300, Heilongjiang, Peoples R China

5.China Agr Univ, Key Lab Crop Heterosis & Utilizat, Beijing Key Lab Crop Genet Improvement, Minist Educ, Beijing 100193, Peoples R China

6.Univ Karachi, Karachi Inst Biotechnol & Genet Engn KIBGE, Karachi 75270, Pakistan

关键词： Brown rice; Mini-core collection; Functional components; Genotypic differences; Regional characteristics

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 12 期

页码：

收录情况： SCI

摘要： Objective: To understand the geographic differences and variations in the functional components of brown rice cores collected from global rice germplasms. Methods: Four functional components, gamma-aminobutyric acid (GABA), resistant starch (RS), total flavonoids, and alkaloids, in brown rice from 690 mini-core collections from 31 countries from five continents and the International Rice Research Institute, were analyzed using a spectrophotometry colorimetric method, and the results were statistically validated. Conclusion: The highest average amounts of functional components were obtained in Asian germplasms, except for GABA, and total flavonoids were highest in brown rice from Europe and Oceania, followed by Asia. The highest coefficient of variation for GABA was observed in Asia; that for RS and total flavonoids was observed in Africa, followed by Asia; and that for alkaloids was observed in America, followed by Asia. Overall, Asian countries were the most prominent and representative zones with the highest genotypic potential for functional components of brown rice. Forty-one rice accessions with enriched functional components originated mostly from biodiversity-rich areas in China, followed by those in the Philippines. Late sowing favored the enrichment of these components in brown rice. The current study provides a reference for rice breeding with enriched functional constituents, and guidelines for screening functional rice that could be used for human chronic disease research.