Start Date
24-4-2025 12:00 AM
Description
Gibberellins (GAs) are essential plant hormones involved in regulating growth and development, particularly in stem elongation, seed germination, and flowering. In cereal crops like millet, dwarf genotypes are of agricultural interest due to their potential for increased stability and yield efficiency. However, the genetic mechanisms underlying dwarfism in millet remain unclear. This study investigates the response of various dwarf millet genotypes to gibberellin treatments and seeks to determine the genetic basis of their dwarfism. We hypothesize that genotypes with gibberellin biosynthesis deficiencies will exhibit increased stem elongation when treated with gibberellin, while genotypes with signal transduction defects will show minimal response. Using a controlled greenhouse experiment, we evaluate growth differences among dwarf mutant and wild-type millet strains under gibberellin treatment. The results indicate that the wild-type and Dwarf 1 genotypes exhibited significant stem elongation following gibberellin application, while Dwarf 2 showed moderate elongation, suggesting a partial response. In contrast, the control groups demonstrated limited growth, indicating that gibberellin treatment significantly influenced elongation in susceptible genotypes. By identifying the genetic factors affecting gibberellin response, this research enhances our understanding of hormone regulation in cereal crops, contributing to the development of improved millet varieties for sustainable agriculture.
Recommended Citation
McCarty, Macie; Miller, Audrie; Calvert, Quinn; Waters, Abi; Creary, Dania; and Coleman, Justin, "Investigating the Effects of Gibberellin Treatments on Different Dwarf Millet Genotypes and Identifying the Mechanism Responsible for Genetic Dwarfism" (2025). 2025 Student Academic Showcase. 20.
https://digitalcommons.lindenwood.edu/src_2025/Posters/Posters/20
Included in
Investigating the Effects of Gibberellin Treatments on Different Dwarf Millet Genotypes and Identifying the Mechanism Responsible for Genetic Dwarfism
Gibberellins (GAs) are essential plant hormones involved in regulating growth and development, particularly in stem elongation, seed germination, and flowering. In cereal crops like millet, dwarf genotypes are of agricultural interest due to their potential for increased stability and yield efficiency. However, the genetic mechanisms underlying dwarfism in millet remain unclear. This study investigates the response of various dwarf millet genotypes to gibberellin treatments and seeks to determine the genetic basis of their dwarfism. We hypothesize that genotypes with gibberellin biosynthesis deficiencies will exhibit increased stem elongation when treated with gibberellin, while genotypes with signal transduction defects will show minimal response. Using a controlled greenhouse experiment, we evaluate growth differences among dwarf mutant and wild-type millet strains under gibberellin treatment. The results indicate that the wild-type and Dwarf 1 genotypes exhibited significant stem elongation following gibberellin application, while Dwarf 2 showed moderate elongation, suggesting a partial response. In contrast, the control groups demonstrated limited growth, indicating that gibberellin treatment significantly influenced elongation in susceptible genotypes. By identifying the genetic factors affecting gibberellin response, this research enhances our understanding of hormone regulation in cereal crops, contributing to the development of improved millet varieties for sustainable agriculture.