ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2014
Genetic basis of grain yield heterosis in an "immortalized F₂" maize population.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.
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46 citing papers in PubMed.
- Repeated chip analysis for reducing the effect of genotyping errors on gene mapping for two recombinant inbred line populations in wheat (Triticum aestivum L.).BMC plant biology · 2025Article
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- GWAS-based population genetic analysis identifies bZIP29 as a heterotic gene in maize.Plant communications · 2025Article
- Novel candidate genes and genetic basis analysis of kernel starch content in tropical maize.BMC plant biology · 2025Article
- Dissecting the genetic architecture of yield-related traits by QTL mapping in maize.Frontiers in plant science · 2025Article
- Molecular Mechanisms of Heterosis and Its Applications in Tree Breeding: Progress and Perspectives.International journal of molecular sciences · 2024Review
- Exploring the Genetic Basis ofCurrent issues in molecular biology · 2024Article
- Genomic prediction in hybrid breeding: I. Optimizing the training set design.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- A systematic dissection in oilseed rape provides insights into the genetic architecture and molecular mechanism of yield heterosis.Plant biotechnology journal · 2023Article
- The Use of DArTseq Technology to Identify Markers Related to the Heterosis Effects in Selected Traits in Maize.Current issues in molecular biology · 2023Article
- Comparative transcriptomics analysis at the key stage of maize ear development dissect heterosis.The plant genome · 2023Article
- Combined QTL mapping on bi-parental immortalized heterozygous populations to detect the genetic architecture on heterosis.Frontiers in plant science · 2023Article
- Large-scale genomic and transcriptomic profiles of rice hybrids reveal a core mechanism underlying heterosis.Genome biology · 2022Article
- Molecular basis of heterosis and related breeding strategies reveal its importance in vegetable breeding.Horticulture research · 2021Review
- The genetic mechanism of heterosis utilization in maize improvement.Genome biology · 2021Article
- Global transcriptional profiling between inbred parents and hybrids provides comprehensive insights into ear-length heterosis of maize (Zea mays).BMC plant biology · 2021Article
- Genetic Dissection of Hybrid Performance and Heterosis for Yield-Related Traits in Maize.Frontiers in plant science · 2021Article
- Identification of quantitative trait loci for kernel-related traits and the heterosis for these traits in maize (Zea mays L.).Molecular genetics and genomics : MGG · 2020Article
- Integrating High-Throughput Phenotyping and Statistical Genomic Methods to Genetically Improve Longitudinal Traits in Crops.Frontiers in plant science · 2020Review
- Genetic dissection of yield-related traits and mid-parent heterosis for those traits in maize (Zea mays L.).BMC plant biology · 2019Article
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9 authors.
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Abstract
key messageGenetic basis of grain yield heterosis relies on the cumulative effects of dominance, overdominance, and epistasis in maize hybrid Yuyu22. Heterosis, i.e., when F1 hybrid phenotypes are superior to those of the parents, continues to play a critical role in boosting global grain yield. Notwithstanding our limited insight into the genetic and molecular basis of heterosis, it has been exploited extensively using different breeding approaches. In this study, we investigated the genetic underpinnings of grain yield and its components using "immortalized F2" and recombinant inbred line populations derived from the elite hybrid Yuyu22. A high-density linkage map consisting of 3,184 bins was used to assess (1) the additive and additive-by-additive effects determined using recombinant inbred lines; (2) the dominance and dominance-by-dominance effects from a mid-parent heterosis dataset; and (3) the various genetic effects in the "immortalized F2" population. Compared with a low-density simple sequence repeat map, the bin map identified more quantitative trait loci, with higher LOD scores and better accuracy of detecting quantitative trait loci. The bin map showed that, among all traits, dominance was more important to heterosis than other genetic effects. The importance of overdominance/pseudo-overdominance was proportional to the amount of heterosis. In addition, epistasis contributed to heterosis as well. Phenotypic variances explained by the QTLs detected were close to the broad-sense heritabilities of the observed traits. Comparison of the analyzed results obtained for the "immortalized F2" population with those for the mid-parent heterosis dataset indicated identical genetic modes of action for mid-parent heterosis and grain yield performance of the hybrid.
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