Xiaoqin Zheng1, Yuqing Wan1, Qian Zhang2, Liqin He2, Shihao Tang1, Qiguo Zhuang2, Lihua Wang2,*
Phyton-International Journal of Experimental Botany, Vol.94, No.12, pp. 3879-3892, 2025, DOI:10.32604/phyton.2025.073229
- 29 December 2025
Abstract To investigate endogenous hormone changes in “Hongyang” kiwifruit from overwintering buds to floral morphogenesis (bell-shaped flowering stage), systematic observations were conducted during the undifferentiated stage, axillary bud differentiation stage, and floral morphogenesis stage from late November 2023 to early April 2024. Paraffin sectioning was employed to examine floral bud morphology, while LC-MS targeted metabolomics quantified changes in 15 endogenous hormones across 8 classes. Results indicated floral bud differentiation commenced from late January to early February and concluded by mid-April, spanning approximately 70 days. Approximately 33 days after axillary bud initiation marked the axillary bud primordium… More >