Genome-wide association mapping identifies markers associated with cane yield components and sucrose traits in the Louisiana sugarcane core collection

被引：39
作者：
Fickett, Nathanael [1 ]
Gutierrez, Andres [1 ]
Verma, Mohit [1 ]
Pontif, Michael [2 ]
Hale, Anna [3 ]
Kimbeng, Collins [2 ]
Baisakh, Niranjan [1 ]
机构：
[1] Louisiana State Univ, Ctr Agr, Sch Plant Environm & Soil Sci, Baton Rouge, LA 70803 USA
[2] Louisiana State Univ, Agr Ctr, Sugar Res Stn, St Gabriel, LA USA
[3] USDA ARS, Sugarcane Res Unit, Houma, LA 70361 USA
来源：
GENOMICS | 2019年 / 111卷 / 06期
关键词：
Genome-wide association study; Genotyping by sequencing; Louisiana core collection; SNP; Sugarcane; POPULATION-STRUCTURE; RESISTANCE; SACCHARUM; DIVERSITY; GENOTYPE; GENES;
D O I：
10.1016/j.ygeno.2018.12.002
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Sugarcane is an economically important crop for both food and biofuel industries. Marker-assisted breeding in sugarcane is becoming a reality with the recent development and deployment of markers linked with disease resistance genes. Large linkage disequilibrium in sugarcane makes genome-wide association studies (GWAS) a better alternative to biparental mapping to identify markers associated with agronomic traits. GWAS was conducted on a Louisiana core collection to identify marker-trait associations (MTA) for 11 cane yield and sucrose traits using single nucleotide polymorphism (SNP) and insertion-deletion (Indel) markers. Significant (P < .05) MTAs were identified for all traits where the top ranked markers explained up to 15% of the total phenotypic variation. High correlations (0.732 to 0.999) were observed between sucrose traits and 56 markers were found consistent across multiple traits. These markers following validation in more diverse populations could be used in marker-assisted selection of clones in sugarcane breeding program in Louisiana and elsewhere.
引用
收藏
页码：1794 / 1801
页数：8
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