Short communication: QTL mapping for ear tip-barrenness in maize

  • Junqiang Ding Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Jinliang Ma Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Jiafa Chen Henan Agricultural University, College of Agronomy. Zhengzhou 450002 http://orcid.org/0000-0002-5684-6692
  • Tangshun Ai Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Zhimin Li Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Zhiqiang Tian Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Suowei Wu Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Wei Chen Henan Agricultural University, College of Agronomy. Zhengzhou 450002
  • Jianyu Wu Henan Agricultural University, College of Life Sciences. No 65, Wenhua Road, Jinshui. Zhengzhou 450002
DOI: https://doi.org/10.5424/sjar/2016143-9325
Keywords: quantitative trait loci, Zea mays (L.), mixed-model composite interval mapping, SSR

Abstract

Barren tip on corn ear is an important agronomic trait in maize, which is highly associated with grain yield. Understanding the genetic basis of tip-barrenness may help to reduce the ear tip-barrenness in breeding programs. In this study, ear tip-barrenness was evaluated in two environments in a F2:3 population, and it showed significant genotypic variation for ear tip-barrenness in both environments. Using mixed-model composite interval mapping method, three additive effects quantitative trait loci (QTL) for ear tip-barrenness were mapped on chromosomes 2, 3 and 6, respectively. They explained 16.6% of the phenotypic variation, and no significant QTL × Environment interactions and digenic interactions were detected. The results indicated that additive effect was the main genetic basis for ear tip-barrenness in maize. This is the first report of QTL mapped for ear tip-barrenness in maize.

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Published
2016-08-31
How to Cite
Ding, J., Ma, J., Chen, J., Ai, T., Li, Z., Tian, Z., Wu, S., Chen, W., & Wu, J. (2016). Short communication: QTL mapping for ear tip-barrenness in maize. Spanish Journal of Agricultural Research, 14(3), e07SC01. https://doi.org/10.5424/sjar/2016143-9325
Issue
Vol. 14 No. 3 (2016)
Section
Plant breeding, genetics and genetic resources

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