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The Plant Genome
Article . 2020 . Peer-reviewed
License: CC BY NC ND
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The Plant Genome
Article
License: CC BY NC ND
Data sources: UnpayWall
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The Plant Genome
Article . 2020
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Genomic prediction of maternal haploid induction rate in maize

Authors: Vinícius Costa Almeida; Henrique Uliana Trentin; Ursula Karoline Frei; Thomas Lübberstedt;

Genomic prediction of maternal haploid induction rate in maize

Abstract

Abstract Genomic prediction (GP) might be an efficient way to improve haploid induction rate (HIR) and to reduce the laborious and time‐consuming task of phenotypic selection for HIR in maize ( Zea mays L.). In this study, we evaluated GP accuracies for HIR and other agronomic traits of importance to inducers by independent and cross‐validation. We propose the use of GP for cross prediction and parental selection in the development of new inducer breeding populations. A panel of 159 inducers from Iowa State University (ISU set) was genotyped and phenotyped for HIR and several agronomic traits. The data of an independent set of 53 inducers evaluated by the University of Hohenheim (UOH set) was used for independent validation. The HIR ranged from 0.61 to 20.74% and exhibited high heritability (0.90). High cross‐validation prediction accuracy was observed for HIR (r = 0.82), whereas for other traits it ranged from 0.36 (self‐induction rate) to 0.74 (days to anthesis). Prediction accuracies across different sets were higher when the larger panel (ISU set) was used as a training population (r = 0.54). The average HIR of the 12,561 superior predicted progenies (μ SP ) ranged from 1.00–18.36% and was closely related to the corresponding midparent genomic estimated breeding value (GEBV). A predicted genetic variance ( V G ) of reduced magnitude was observed in the twenty crosses with highest midparent GEBV or μ SP for HIR. Our results indicate that although GP is a useful tool for parental selection, decisions about which cross combinations should be pursued need to be based on optimal trade‐offs between maximizing both μ SP and V G .

Country
United States
Related Organizations
Keywords

Genome, Models, Genetic, Agronomy and Crop Sciences, Agriculture, Plant Breeding and Genetics, Genomics, Haploidy, Zea mays, 630

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
20
Top 10%
Top 10%
Top 10%
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