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- Title
低温处理对牡丹花瓣细胞核形态及 生理指标的影响.
- Authors
陈 悦; 刘会超; 贾文庆; 何松林; 郭英姿; 朱小佩; 王艳丽; 杜晓华; 王 政
- Abstract
To analyze the cytological mechanism and physiological reasons of peony cut flower senescence at different temperatures,the effect of(25±1)℃(room temperature,contrast),2 ℃,4 ℃ and 8 ℃ on the vase life of peony was studied. The changes of nucleus morphology were observed and analyzed by DAPI, and the variations of protective enzyme(SOD,POD,CAT)activities,malondialdehyde(MDA),soluble protein content and superoxide anion(O- · 2 )generation rate during the process of flower arrangement in vase were analyzed. The results showed that the longest cut flower life was 17 d at 4,2 ℃. The order of the effect of different temperature treatments on the vase life of cut flowers was 4 ℃ =2 ℃ >8 ℃ . Low temperature treatment affected the normal rate of nucleus of cut flowers to different degrees. The normal rate of nucleus was basically 4 ℃>2 ℃>8 ℃,and the normal rate of nuclear could be used as an index to measure the health of cut flowers. The activities of SOD,CAT and POD of petals maintained a relatively high level,the petals could effectively remove excess reactive oxygen species and free radicals,and the metabolism was basically balanced,which was the physiological reason for the longer lifespan of cut flowers at 4 ℃.
- Subjects
CUT flowers; FLOWER arrangements; REACTIVE oxygen species; SUPEROXIDES; PHYSIOLOGY; LOW temperatures
- Publication
Journal of Henan Agricultural Sciences, 2022, Vol 51, Issue 1, p116
- ISSN
1004-3268
- Publication type
Article
- DOI
10.15933/j.cnki.1004‑3268.2022.01.014