Transcriptomic Analysis of Gibberellin-Mediated Flower Opening Process in Tree Peony (<i>Paeonia suffruticosa</i>).

ABSTRACT: Gibberellin (GA₃) plays a crucial role in regulating the flowering time of tree peony (Paeonia suffruticosa Andr.). However, its function on flower opening after dormancy release remains unclear, and its molecular mechanism need further study. We investigated the effects of exogenous GA₃ treatments at 800 mg/L, 900 mg/L, and 1000 mg/L on the flowering process of five-year-old peony plants ('Luhehong') under greenhouse conditions. Our results showed that exogenous GA₃ significantly accelerated the flower opening process. Specifically, flower buds treated with 800 mg/L and 900 mg/L GA₃ bloomed after 42 and 45 days, respectively. In contrast, all flower buds treated with 1000 mg/L GA₃ aborted, while only one flower bud in the contr

SUBMITTER: Li B 

PROVIDER: S-EPMC11990408 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature