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Linkage mapping combined with GWAS revealed the genetic structural relationship and candidate genes of maize flowering time-related traits.
Shi, Jian; Wang, Yunhe; Wang, Chuanhong; Wang, Lei; Zeng, Wei; Han, Guomin; Qiu, Chunhong; Wang, Tengyue; Tao, Zhen; Wang, Kaiji; Huang, Shijie; Yu, Shuaishuai; Wang, Wanyi; Chen, Hongyi; Chen, Chen; He, Chen; Wang, Hui; Zhu, Peiling; Hu, Yuanyuan; Zhang, Xin; Xie, Chuanxiao; Lu, Xiaoduo; Li, Peijin.
Affiliation
  • Shi J; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang Y; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang C; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang L; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Zeng W; School of Agronomy, Anhui Agricultural University, Hefei, 230036, China.
  • Han G; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Qiu C; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang T; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Tao Z; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang K; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Huang S; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Yu S; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang W; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Chen H; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Chen C; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • He C; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Wang H; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Zhu P; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Hu Y; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Zhang X; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
  • Xie C; Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Beijing, 100081, China.
  • Lu X; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China. lu.xiaoduo@163.com.
  • Li P; The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China. Peijin.li@ahau.edu.cn.
BMC Plant Biol ; 22(1): 328, 2022 Jul 08.
Article in En | MEDLINE | ID: mdl-35799118
ABSTRACT

BACKGROUND:

Flowering time is an important agronomic trait of crops and significantly affects plant adaptation and seed production. Flowering time varies greatly among maize (Zea mays) inbred lines, but the genetic basis of this variation is not well understood. Here, we report the comprehensive genetic architecture of six flowering time-related traits using a recombinant inbred line (RIL) population obtained from a cross between two maize genotypes, B73 and Abe2, and combined with genome-wide association studies to identify candidate genes that affect flowering time.

RESULTS:

Our results indicate that these six traits showed extensive phenotypic variation and high heritability in the RIL population. The flowering time of this RIL population showed little correlation with the leaf number under different environmental conditions. A genetic linkage map was constructed by 10,114 polymorphic markers covering the whole maize genome, which was applied to QTL mapping for these traits, and identified a total of 82 QTLs that contain 13 flowering genes. Furthermore, a combined genome-wide association study and linkage mapping analysis revealed 17 new candidate genes associated with flowering time.

CONCLUSIONS:

In the present study, by using genetic mapping and GWAS approaches with the RIL population, we revealed a list of genomic regions and candidate genes that were significantly associated with flowering time. This work provides an important resource for the breeding of flowering time traits in maize.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Zea mays / Genome-Wide Association Study Type of study: Prognostic_studies Language: En Journal: BMC Plant Biol Journal subject: BOTANICA Year: 2022 Type: Article Affiliation country: China
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Zea mays / Genome-Wide Association Study Type of study: Prognostic_studies Language: En Journal: BMC Plant Biol Journal subject: BOTANICA Year: 2022 Type: Article Affiliation country: China