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Understanding the Genetics of Complex Traits in Plants: Association Analysis and Genomic Selection Methods

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 625

Special Issue Editor

Special Issue Information

Dear Colleagues,

Crops provide food and nutrition for humankind both directly and indirectly. It is obligatory to maintain or even improve crop production in order to feed the arising world population under climate change. Thus, in targeting genetic improvement and highly efficient breeding, it is crucial to dissect the genetic architecture, understand the molecular mechanism, and explore the new favorable gene resource of yield, quality, biotic, and abiotic stress resistance in plants. Association analysis and genomic selection methods have already displayed wonderful achievements and high efficiency in such fields. All research relating to association analysis and genomic selection for complex traits in plants are welcome for this Special Issue.

The research goal could be genetic architecture, molecular biology, or genotype–environment interaction. The accepted article types include research, reviews, perspectives, or comments. Submit to this Special Issue and contribute to the development of food and crop production worldwide.

Dr. Wenxin Liu
Guest Editor

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Keywords

  • association analysis
  • genomic selection
  • plant
  • complex trait
  • genetic architecture
  • molecular biology
  • molecular breeding
  • genotype–environment interaction

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Published Papers (1 paper)

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Research

26 pages, 10735 KiB  
Article
Comparative Transcriptomic Analysis Reveals Domestication and Improvement Patterns of Broomcorn Millet (Panicum miliaceum L.)
by Xinyu Zhao, Minxuan Liu, Chunxiang Li, Jingyi Zhang, Tianshu Li, Fengjie Sun, Ping Lu and Yue Xu
Int. J. Mol. Sci. 2024, 25(20), 11012; https://doi.org/10.3390/ijms252011012 - 13 Oct 2024
Viewed by 333
Abstract
Broomcorn millet (Panicum miliaceum L.) is one of the earliest crops, domesticated nearly 8000 years ago in northern China. It gradually spread across the entire Eurasian continent, as well as to America and Africa, with recent improvement in various reproductive and vegetative [...] Read more.
Broomcorn millet (Panicum miliaceum L.) is one of the earliest crops, domesticated nearly 8000 years ago in northern China. It gradually spread across the entire Eurasian continent, as well as to America and Africa, with recent improvement in various reproductive and vegetative traits. To identify the genes that were selected during the domestication and improvement processes, we performed a comparative transcriptome analysis based on wild types, landraces, and improved cultivars of broomcorn millet at both seeding and filling stages. The variations in gene expression patterns between wild types and landraces and between landraces and improved cultivars were further evaluated to explore the molecular mechanisms underlying the domestication and improvement of broomcorn millet. A total of 2155 and 3033 candidate genes involved in domestication and a total of 84 and 180 candidate genes related to improvement were identified at seedling and filling stages of broomcorn millet, respectively. The annotation results suggested that the genes related to metabolites, stress resistance, and plant hormones were widely selected during both domestication and improvement processes, while some genes were exclusively selected in either domestication or improvement stages, with higher selection pressure detected in the domestication process. Furthermore, some domestication- and improvement-related genes involved in stress resistance either lost their functions or reduced their expression levels due to the trade-offs between stress resistance and productivity. This study provided novel genetic materials for further molecular breeding of broomcorn millet varieties with improved agronomic traits. Full article
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