Correlation Analysis of Yield and Photosynthetic Traits with Simple Repeat Sequence (SSR) Markers in Maize

文献类型： 外文期刊

第一作者： Li, Weizhong

作者： Li, Weizhong;Zhao, Dongxu;Wei, Shi;Li, Jing;Li, Weizhong;Wang, Maoqing;Hu, Guohua;Liang, Chunbo

作者机构：

关键词： Maize;SSR;Correlation analysis;Yield;Photosynthetic traits

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2017 年 19 卷 5 期

页码：

收录情况： SCI

摘要： In order to obtain high yield and photosynthetic utilization rate maize hybrids, and develop the functional markers which associated with 10 yield and photosynthetic traits (leaf number of plant, chlorophyll content of three-ear-leaves, leaf area of ear leaf, leaf area of three-ear-leaves, leaf area index, plant height, ear height, ear length, row number of ear and 100 seed weight), 64 pairs of SSR markers were used to genotype the population of 257 maize inbred lines, analyzed the linkage disequilibrium loci and population structure, and determine the contribution rate of markers to phenotypic traits. The results showed that: (1) SSR markers displayed a certain extent of linkage disequilibrium (LD) in the public map. (2) Genetic structure analysis of SSR data demonstrated that the gene population can be divided into 5 subgroups. (3) 18 marker loci were identified to associate with 10 traits, in which 4 loci concentrated in chromosome 9. Seven marker loci were found to associated with 5 photosynthesis traits (leaf number of plant, chlorophyll content of three-ear-leaves, leaf area of ear leaf, leaf area of three-ear-leaves, leaf area index), which were bnlg439, bnlg2291, umc1524, bnlg1154, umc1545, umc1231 and bnlg1450. Seven loci were identified to associated with 5 yield traits (plant height, ear height, ear length, row number of ear and 100 seed weight), which were bnlg1175, umc1946, umc1496, bnlg249, umc2084, bnlg1191 and umc2122. There were other 4 markers loci (umc1065, phi116, bnlg162, phi065) were found associated with both yield traits and photosynthesis traits. The contribution rates of any locus to phenotypic date range from 0.0566 to 0.2145. Our results indicated that SSR marker could be useful for genotyping the population of maize inbred lines. Correlation analysis was useful to identify the markers which associated with phenotypic traits, which can be used for molecular maker assisted selection to improve the breeding efficiency. (C) 2017 Friends Science Publishers

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