Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (8): 1602-1609.DOI: 10.3969/j.issn.1000-2561.2020.08.014

Previous Articles     Next Articles

Variation and Correlation Analysis of Mineral Elements Contents for Core Collection of Landrace Rice in Guangxi

XIA Xiuzhong1,ZHANG Zongqiong1,NONG Baoxuan1,YANG Xinghai1,ZENG Yu2,ZHUANG Jie1,LIU Kaiqiang2,LI Danting1,*()   

  1. 1. Rice Research Institute, Guangxi Academy of Agricultural Sciences / Guangxi Key Laboratory of Rice Genetics and Breeding / Guangxi Talent Highland of High Quality Rice Breeding Research, Nanning, Guangxi 530007, China
    2. Guangxi Academy of Agricultural Sciences, Nanning, Guangxi 530007, China
  • Received:2019-04-02 Revised:2019-11-25 Online:2020-08-25 Published:2020-09-17
  • Contact: LI Danting

Abstract:

The content of Ca, Fe, Zn and Se in brown rice of 419 core collection accessions of Guangxi landrace was analyzed in 2014 and 2015. A total of 34 SSR markers were used to identify the content of four mineral elements by Pearson correlation analysis in the two years. The content of the four mineral elements in the two years was significantly different and positively correlated. The content of Ca and Se in indica was higher than that in japonica with significant difference. The content of Fe and Zn in japonica was higher than that in indica with significant difference. The content of mineral elements was associated with longitude, latitude and altitude of the rice cropping regions. The content of Fe was the highest in southern Guangxi, that of Zn was the highest in central Guangxi, that of Ca, Fe, Zn was the highest in black rice, that of Se was the highest in red rice, that of Ca and Zn of black rice was significantly higher than that of red and white rice, and that of Fe was not significantly among three pericarp colors. The range of correlation coefficient of the content of the four mineral elements between the two years from 0.159 to 0.557, 2014 was significantly positively associated with 2015. There was no obvious difference among the content of the four elements in 2014. In 2015, the content of Se was significantly positively correlated with that of Fe and Zn (P<0.05), the content of Zn was significantly positively associated with that of Fe (P<0.01) and Ca (P<0.001). A total of 167 alleles were detected by SSR markers, with genetic diversity index 0.574 and genetic information 0.522. Pearson correlation analysis showed that 18 loci were associated to the content of the four mineral elements, among them, eight loci weree different from the previous studies. The study would provide a theoretical basis and material foundation for related gene mining and rice breeding with high mineral element content.

Key words: Guangxi rice, landraces, core collection, mineral content, correlation analysis

CLC Number: