Campus Units

Agronomy

Document Type

Article

Publication Version

Published Version

Publication Date

2-5-2020

Journal or Book Title

PloS ONE

Volume

15

Issue

2

First Page

e0228411

DOI

10.1371/journal.pone.0228411

Abstract

Kernel abortion is common phenomenon in vivo haploid induction and closely linked with haploid induction rate, but little information of kernel abortion is available and its genetic basis still unclear. We used two mapping populations including 186 and 263 F2.3 family lines to analyze the different degree of kernel abortion and identify quantitative trait loci (QTL) responsible for kernel abortion during haploid induction. In total 62 putative QTL, accounting for 3.27–14.70% of the phenotypic variation in kernel abortion traits, were detected across all 10 chromosomes. Ten QTL with over 10% contribution to phenotypic variation were affecting the fifth level of endosperm abortion (EnA5th), endosperm abortion (EnA) and total abortion (TA). Co-localization among kernel abortion traits QTL was observed in both populations and among different kernel abortion types. Five overlaps were indentified in the QTL for kernel abortion traits and HIR traits. Maize chromosome bins 3.01–3.02, 3.04–3.06, 4.05–4.06, 5.03–5.04, 8.06 were QTL hotspots for three or four traits related to the kernel abortion during haploid induction. Total kernel abortion rate (TAR) and HIR showed highly significant positive correlation. These findings may help to reveal haploid induction mechanisms and improve haploid production efficiency.

Comments

This article is published as Qu Y, Wu P, Ren J, Liu Z, Tang J, Lübberstedt T, et al. (2020) Mapping of QTL for kernel abortion caused by in vivo haploid induction in maize (Zea mays L.). PLoS ONE 15(2): e0228411. doi: 10.1371/journal.pone.0228411.

Creative Commons License

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

Copyright Owner

Qu et al.

Language

en

File Format

application/pdf

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