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

doi:10.3969/j.issn.1000-2561.2020.08.014

Abstract

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:

S511

XIA Xiuzhong,ZHANG Zongqiong,NONG Baoxuan,YANG Xinghai,ZENG Yu,ZHUANG Jie,LIU Kaiqiang,LI Danting. Variation and Correlation Analysis of Mineral Elements Contents for Core Collection of Landrace Rice in Guangxi[J]. Chinese Journal of Tropical Crops, 2020, 41(8): 1602-1609.

Figures/Tables 7

References 32

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种质来源 Germplasm origin	类型 Type	数量 No. of variety
亚种类型	籼稻	330
亚种类型	粳稻	89
来源地	桂南	235
	桂中	80
	桂北	65
	高寒山区	39
种皮色	白米	303
	红米	101
	黑米	15
合计		419

种质来源 Germplasm origin	类型 Type	数量 No. of variety
亚种类型	籼稻	330
亚种类型	粳稻	89
来源地	桂南	235
	桂中	80
	桂北	65
	高寒山区	39
种皮色	白米	303
	红米	101
	黑米	15
合计		419

年份 Year	元素 Elements	平均值 Mean/(mg·kg^-1)	标准差 Standard Deviation	最小值 Min/(mg·kg^-1)	最大值 Max/(mg·kg^-1)	最大值/最小值 Max/Min ratio	变异系数 CV/%
2014	Ca	183.62	43.76	105.00	386.00	3.68	23.83
	Fe	16.61	2.84	9.80	33.10	3.38	17.07
	Zn	24.77	3.59	15.20	38.20	2.51	14.48
	Se	0.0178	0.0107	0.0010	0.0660	66.00	60.08
2015	Ca	160.04	24.57	107.00	258.00	2.41	15.35
	Fe	17.76	4.67	7.40	32.50	4.39	26.27
	Zn	25.32	4.43	15.20	39.40	2.59	17.48
	Se	0.0196	0.0091	0.0010	0.0540	54.00	46.42

年份 Year	元素 Elements	平均值 Mean/(mg·kg^-1)	标准差 Standard Deviation	最小值 Min/(mg·kg^-1)	最大值 Max/(mg·kg^-1)	最大值/最小值 Max/Min ratio	变异系数 CV/%
2014	Ca	183.62	43.76	105.00	386.00	3.68	23.83
	Fe	16.61	2.84	9.80	33.10	3.38	17.07
	Zn	24.77	3.59	15.20	38.20	2.51	14.48
	Se	0.0178	0.0107	0.0010	0.0660	66.00	60.08
2015	Ca	160.04	24.57	107.00	258.00	2.41	15.35
	Fe	17.76	4.67	7.40	32.50	4.39	26.27
	Zn	25.32	4.43	15.20	39.40	2.59	17.48
	Se	0.0196	0.0091	0.0010	0.0540	54.00	46.42

元素Elements	Ca	Fe	Zn	Se
Ca	0.159^***	0.046	0.298^***	0.052
Fe	-0.092	0.353^***	0.134^**	0.107^*
Zn	0.090	0.082	0.557^***	0.118^*
Se	0.096	-0.026	0.100	0.216^***
n	419