ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2019
Testcross performance of doubled haploid lines from European flint maize landraces is promising for broadening the genetic base of elite germplasm.
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 15 papers.
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Who cites it
15 citing papers in PubMed.
- Genomic loci associated with Fusarium stalk rot resistance and related agronomic traits in maize.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Leveraging natural climatic advantages for large‑scale wheat doubled haploid production via wheat × maize: a protocol optimization study.BMC plant biology · 2026Article
- Rapid cycling genomic selection in maize landraces: a step toward closing the yield gap.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Paclitaxel and Caffeine-Taurine, New Colchicine Alternatives for Chromosomes Doubling in Maize Haploid Breeding.International journal of molecular sciences · 2023Article
- Genomic prediction in hybrid breeding: I. Optimizing the training set design.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- Genotyping of DNA pools identifies untapped landraces and genomic regions to develop next-generation varieties.Plant biotechnology journal · 2023Article
- Article
- Diversity Assessment of the Montenegrin Maize Landrace Gene Pool Maintained in Two Gene Banks.Plants (Basel, Switzerland) · 2021Article
- Genetic diversity and selection signatures in maize landraces compared across 50 years of in situ and ex situ conservation.Heredity · 2021Article
- Androgenesis-Based Doubled Haploidy: Past, Present, and Future Perspectives.Frontiers in plant science · 2021Review
- Heterosis and Hybrid Crop Breeding: A Multidisciplinary Review.Frontiers in genetics · 2021Review
- Deciphering the Genetic Diversity of Landraces With High-Throughput SNP Genotyping of DNA Bulks: Methodology and Application to the Maize 50k Array.Frontiers in plant science · 2020Article
- Genomic prediction with a maize collaborative panel: identification of genetic resources to enrich elite breeding programs.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2020Article
- Doubled haploid technology for line development in maize: technical advances and prospects.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Review
- European maize landraces made accessible for plant breeding and genome-based studies.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2019Article
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7 authors.
Funding
Abstract
key messageSelected doubled haploid lines averaged similar testcross performance as their original landraces, and the best of them approached the yields of elite inbreds, demonstrating their potential to broaden the narrow genetic diversity of the flint germplasm pool. Maize landraces represent a rich source of genetic diversity that remains largely idle because the high genetic load and performance gap to elite germplasm hamper their use in modern breeding programs. Production of doubled haploid (DH) lines can mitigate problems associated with the use of landraces in pre-breeding. Our objective was to assess in comparison with modern materials the testcross performance (TP) of the best 89 out of 389 DH lines developed from six landraces and evaluated in previous studies for line per se performance (LP). TP with a dent tester was evaluated for the six original landraces, ~ 15 DH lines from each landrace selected for LP, and six elite flint inbreds together with nine commercial hybrids for grain and silage traits. Mean TP of the DH lines rarely differed significantly from TP of their corresponding landrace, which averaged in comparison with the mean TP of the elite flint inbreds ~ 20% lower grain yield and ~ 10% lower dry matter and methane yield. Trait correlations of DH lines closely agreed with the literature; correlation of TP with LP was zero for grain yield, underpinning the need to evaluate TP in addition to LP. For all traits, we observed substantial variation for TP among the DH lines and the best showed similar TP yields as the elite inbreds. Our results demonstrate the high potential of landraces for broadening the narrow genetic base of the flint heterotic pool and the usefulness of the DH technology for exploiting idle genetic resources from gene banks.
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