Campus Units

Agronomy

Document Type

Article

Publication Version

Submitted Manuscript

Publication Date

2019

Journal or Book Title

Plant Breeding

DOI

10.1111/pbr.12688

Abstract

Haploid genome doubling is a key limiting step of haploid breeding in maize. Spontaneous restoration of haploid male fertility (HMF) provides a more promising method than the artificial doubling process. To reveal the genetic basis of HMF, haploids were obtained from the offspring of 285 F2:3 families, derived from the cross Zheng58 × K22. The F2:3 families were used as the female donor and Yu high inducer No. 1 (YHI‐1) as the male inducer line. The rates of HMF from each family line were evaluated at two field sites over two planting seasons. HMF displayed incomplete dominance. Transgressive segregation of haploids from F2:3 families was observed relative to haploids derived from the two parents of the mapping population. A total of nine quantitative trait loci (QTL) were detected, which were distributed on chromosomes 1, 3, 4, 7 and 8. Three major QTL, qHMF3b, qHMF7a and qHMF7b were detected in both locations, respectively. These QTL could be useful to predict the ability of spontaneous haploid genome doubling, and to accelerate the haploid breeding process by introgression or aggregation of those QTL.

Comments

This is the pre-peer reviewed version of the following article: Yang, Jiwei, Yanzhi Qu, Qiong Chen, Jihua Tang, Thomas Lübberstedt, Haochuan Li, and Zonghua Liu. "Genetic dissection of haploid male fertility in maize (Zea mays L.)." Plant Breeding (2019), which has been published in final form at doi: 10.1111/pbr.12688. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

Blackwell Verlag GmbH

Language

en

File Format

application/pdf

Published Version

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