期刊
KOREAN JOURNAL OF HORTICULTURAL SCIENCE & TECHNOLOGY
卷 33, 期 1, 页码 31-38出版社
KOREAN SOC HORTICULTURAL SCIENCE
DOI: 10.7235/hort.2015.14043
关键词
floral initiation; microscopic observation; photoperiod induction; polyamine metabolism; HPLC
类别
资金
- National Natural Science Foundation of China [31101564]
This study was carried out to investigate the relationship between endogenous polyamines (PAs) and floral bud differentiation in chrysanthemum (Chrysanthemum morifolium). In this study, PA content (free, bound, and conjugated) in apical buds, leaves, and roots changed appreciably during floral bud differentiation. PAs accumulated during series of processes such as floral induction, differentiation of floret primordia, and crown formation in apical buds; changes in PAs in apical buds may have a relationship with those in leaves and roots. The levels of free PAs and conjugated PAs [putrescine (Put) and spermine (Spm)] in apical buds rapidly increased during the initiation stage of floral bud differentiation, while free and conjugated spermidine (Spd) reached their highest levels at the stage of floret primordium differentiation. In the free, conjugated, and bound PA fractions, the changes in Spm content were negligible compared to those of Put and Spd throughout the experiment. These findings indicate that PAs participate in regulating the process of flower bud differentiation in chrysanthemum.
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