ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2019
Haploid male fertility and spontaneous chromosome doubling evaluated in a diallel and recurrent selection experiment in maize.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- A two-stage screening approach integrated with GWAS for rare phenotypes such as spontaneous haploid genome doubling in maize.Frontiers in plant science · 2026Article
- Somatic genome doubling determines fertility in maize haploids of inbred A427.Frontiers in plant science · 2026Article
- In vitro- and in vivo-based approaches for doubled haploid production in Zea mays L.: challenges and opportunities.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Review
- Genes and genetics belong to maize haploid induction.Frontiers in plant science · 2025Review
- Fine mapping of major QTL qshgd1 for spontaneous haploid genome doubling in maize (Zea mays L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Combining multiplex gene editing and doubled haploid technology in maize.The New phytologist · 2023Article
- Popcorn (Frontiers in plant science · 2023Article
- Major locus for spontaneous haploid genome doubling detected by a case-control GWAS in exotic maize germplasm.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Article
- Diallelic Analysis of Tropical Maize Germplasm Response to Spontaneous Chromosomal Doubling.Plants (Basel, Switzerland) · 2020Article
- QTL Mapping and Prediction of Haploid Male Fertility Traits in Maize (Plants (Basel, Switzerland) · 2020Article
- QTL mapping of spontaneous haploid genome doubling using genotyping-by-sequencing in maize (Zea mays L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- Impact of Spontaneous Haploid Genome Doubling in Maize Breeding.Plants (Basel, Switzerland) · 2020Review
- Doubled haploid technology for line development in maize: technical advances and prospects.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Review
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4 authors.
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Abstract
key messageMainly additive gene action governed inheritance of haploid male fertility, although epistatic effects were also significant. Recurrent selection for haploid male fertility resulted in substantial improvement in this trait. The doubled haploid (DH) technology offers several advantages in maize breeding compared to the traditional method of recurrent selfing. However, there is still great potential for improving the success rate of DH production. Currently, the majority of haploid plants are infertile after chromosome doubling treatment by antimitotic agents such as colchicine and cannot be selfed for production of DH lines. Improvement in haploid male fertility (HMF) by selection for a higher spontaneous chromosome doubling rate (SDR) has the potential to increase DH production efficiency. To investigate the gene action governing SDR in two breeding populations, we adapted the quantitative-genetic model of Eberhart and Gardner (in Biometrics 22:864-881. https://doi.org/10.2307/2528079 , 1966) for the case of haploid progeny from ten DH lines and corresponding diallel crosses. Furthermore, we carried out three cycles of recurrent selection for SDR in two additional populations to evaluate the selection gain for this trait. Additive genetic effects predominated in both diallel crosses, but epistatic effects were also significant. Entry-mean heritability of SDR observed for haploid progeny of these populations exceeded 0.91, but the single-plant heritability relevant to selection was low, ranging from 0.11 to 0.19. Recurrent selection increased SDR from approximately 5-50%, which suggests the presence of few QTL with large effects. This improvement in HMF is greater than the effect of standard colchicine treatment, which yields at maximum 30% fertile haploids. Altogether, the results show the great potential of spontaneous chromosome doubling to streamline development DH lines and to enable new breeding schemes with more efficient allocation of resources.
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