biostudies-literatureSun Zthe Talent Introduction Start-up Fund Project of Anhui Science and Technology Uni-versitythe Excellent Scientific Research and Innovation team of the Education Department of Anhui ProvinceIndustry University Research Cooperation Project Shouxian Branch Center for the Transformation of Scientific and Technological Achievements of Anhui University of Science and Technologythe Industry University Research Cooperation Project Shouxian Branch Center for the Transformation of Scientific and Technological Achievements of Anhui University of Science and Technologythe Anhui Province College Student Innovation and Entrepreneurship Training Pro-gramAnhui Province College Student Innovation and Entrepreneurship Training ProgramTalent Introduction Start-up Fund Project of Anhui Science and Technology UniversityEducation Department of Anhui Provincethe Anhui Province Key Research and Development ProgramAnhui Province Key Research and Development Program759https://www.ebi.ac.uk/biostudies/studies/S-EPMC10975181biostudies-literatureUnknown13(6)Panicle type is one of the important factors affecting rice (<i>Oryza sativa</i> L.) yield, and the identification of regulatory genes in panicle development can provide significant insights into the molecular network involved. This study identified a <i>large and dense panicle 1</i> (<i>ldp1</i>) mutant produced from the Wuyunjing 7 (WYJ7) genotype, which displayed significant relative increases in panicle length, number of primary and secondary branches, number of grains per panicle, grain width, and grain yield per plant. Scanning electron microscopy results showed that the shoot apical meristem (SAM) of <i>ldp1</i> was relatively larger at the bract stage (BM), with a significantly increased number of primary (PBM) and secondary branch (SBM) meristematic centers, indicating that the <iPlants (Basel, Switzerland)The <i>ldp1</i> Mutation Affects the Expression of Auxin-Related Genes and Enhances SAM Size in Rice.PMC10975181NXYJ202001NXYJ202101202204c06020070kycg8812152022AH010087S202210879141Tan XZhou AHuang XMei TDuan SFeng TLiu BLi RYe YSun ZZhao HAi HfalseThe <i>ldp1</i> Mutation Affects the Expression of Auxin-Related Genes and Enhances SAM Size in Rice.Panicle type is one of the important factors affecting rice (<i>Oryza sativa</i> L.) yield, and the identification of regulatory genes in panicle development can provide significant insights into the molecular network involved. This study identified a <i>large and dense panicle 1</i> (<i>ldp1</i>) mutant produced from the Wuyunjing 7 (WYJ7) genotype, which displayed significant relative increases in panicle length, number of primary and secondary branches, number of grains per panicle, grain width, and grain yield per plant. Scanning electron microscopy results showed that the shoot apical meristem (SAM) of <i>ldp1</i> was relatively larger at the bract stage (BM), with a significantly increased number of primary (PBM) and secondary branch (SBM) meristematic centers, indicating that the <i2024-01-01T00:00:00Z2024 Mar2026-07-12T03:21:46.086Z2024-11-13T18:32:59.243ZS-EPMC109751813859275110.3390/plants13060759