Your browser doesn't support javascript.
loading
Genome-wide association study and development of molecular markers for yield and quality traits in peanut (Arachis hypogaea L.).
Guo, Minjie; Deng, Li; Gu, Jianzhong; Miao, Jianli; Yin, Junhua; Li, Yang; Fang, Yuanjin; Huang, Bingyan; Sun, Ziqi; Qi, Feiyan; Dong, Wenzhao; Lu, Zhenhua; Li, Shaowei; Hu, Junping; Zhang, Xinyou; Ren, Li.
Afiliação
  • Guo M; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Deng L; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Gu J; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Miao J; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Yin J; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Li Y; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Fang Y; Shennong Laboratory, Henan Provincial Key Laboratory for Oil Crops Improvement, Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
  • Huang B; Shennong Laboratory, Henan Provincial Key Laboratory for Oil Crops Improvement, Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
  • Sun Z; Shennong Laboratory, Henan Provincial Key Laboratory for Oil Crops Improvement, Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
  • Qi F; Shennong Laboratory, Henan Provincial Key Laboratory for Oil Crops Improvement, Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
  • Dong W; Shennong Laboratory, Henan Provincial Key Laboratory for Oil Crops Improvement, Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China.
  • Lu Z; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Li S; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Hu J; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China.
  • Zhang X; Shennong Laboratory, Henan Provincial Key Laboratory for Oil Crops Improvement, Henan Academy of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, China. haasxinyou@163.com.
  • Ren L; Peanut Institute, Kaifeng Academy of Agricultural and Forestry Sciences, Kaifeng, 475004, China. renli120@sina.com.
BMC Plant Biol ; 24(1): 244, 2024 Apr 05.
Article em En | MEDLINE | ID: mdl-38575936
ABSTRACT

BACKGROUND:

This study aims to decipher the genetic basis governing yield components and quality attributes of peanuts, a critical aspect for advancing molecular breeding techniques. Integrating genotype re-sequencing and phenotypic evaluations of seven yield components and two grain quality traits across four distinct environments allowed for the execution of a genome-wide association study (GWAS).

RESULTS:

The nine phenotypic traits were all continuous and followed a normal distribution. The broad heritability ranged from 88.09 to 98.08%, and the genotype-environment interaction effects were all significant. There was a highly significant negative correlation between protein content (PC) and oil content (OC). The 10× genome re-sequencing of 199 peanut accessions yielded a total of 631,988 high-quality single nucleotide polymorphisms (SNPs), with 374 significant SNP loci identified in association with the nine traits of interest. Notably, 66 of these pertinent SNPs were detected in multiple environments, and 48 of them were linked to multiple traits of interest. Five loci situated on chromosome 16 (Chr16) exhibited pleiotropic effects on yield traits, accounting for 17.64-32.61% of the observed phenotypic variation. Two loci on Chr08 were found to be strongly associated with protein and oil contents, accounting for 12.86% and 14.06% of their respective phenotypic variations, respectively. Linkage disequilibrium (LD) block analysis of these seven loci unraveled five nonsynonymous variants, leading to the identification of one yield-related candidate gene and two quality-related candidate genes. The correlation between phenotypic variation and SNP loci in these candidate genes was validated by Kompetitive allele-specific PCR (KASP) marker analysis.

CONCLUSIONS:

Overall, molecular markers were developed for genetic loci associated with yield and quality traits through a GWAS investigation of 199 peanut accessions across four distinct environments. These molecular tools can aid in the development of desirable peanut germplasm with an equilibrium of yield and quality through marker-assisted breeding.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Arachis / Estudo de Associação Genômica Ampla Idioma: En Revista: BMC Plant Biol Assunto da revista: BOTANICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Arachis / Estudo de Associação Genômica Ampla Idioma: En Revista: BMC Plant Biol Assunto da revista: BOTANICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China