ArticleBMC plant biology2025
A multi-parent population approach to reveal the genetic basis of plant height in maize.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Identification of Potential Candidate Dwarf Genes in Maize by BSA-Seq and Transcriptomic Analyses.Plants (Basel, Switzerland) · 2026Article
- Genome-Wide Association Study of Plant and Ear Height in Maize (Plants (Basel, Switzerland) · 2026Article
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7 authors.
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Abstract
backgroundPlant height (PH) is a key agronomic trait influencing Maize yield and environmental adaptability. An optimal plant height can improve lodging resistance, planting density, and harvest index, thereby promoting stable and increased Maize yield. To investigate the genetic basis of plant height regulation, a multi-parent population comprising 917 F8 recombinant inbred lines (RILs) was developed by crossing five tropical, subtropical, and temperate inbred lines (YML32, CML171, TML418, NK40-1, and Chang7-2) with the dwarf inbred line Ye107.
resultsPhenotypic analysis revealed wide variation in plant height and high heritability among the RILs. Using 6,389,682 high-quality SNPs generated through whole-genome resequencing (WGS), 147 significant SNPs and 22 QTLs associated with plant height were identified by genome-wide association studies (GWAS) and linkage analysis, respectively. Integration of these results revealed co-localization of a significant SNP (1–25,296,496) and a major QTL (qPH1-1), confirming a key locus on chromosome 1. This integrative approach, combined with functional annotation, led to the identification of four key candidate genes (Zm00001eb008340, Zm00001eb038680, Zm00001eb038690 and Zm00001eb038700) potentially involved in plant height regulation, which encode ubiquitin carboxy-terminal hydrolase 26, the putative kinase-like protein TMKL1, exocyst complex component EXO84C, and the zinc finger protein Bud20, respectively.
conclusionsFunctional annotation suggested these candidate genes are likely involved in auxin-mediated pathways. This hypothesis was supported by qRT-PCR analysis, which showed high expression of the candidate genes in internode tissues at the V14 rapid growth stage. Notably, Zm00001eb038700 is located upstream of BR2, a well-characterized gene involved in plant height regulation in maize, implicating its potential role in a conserved regulatory network. This study elucidates novel genetic components underlying plant height in maize and provides valuable genomic resources for breeding compact, high-yielding hybrids.
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