姜花瓶插期间的形态及生理生化变化研究

姜花花穗常由１０－１８小花所组成，其小花由下向上依次开放，伴随着小花的开放，小花干鲜质量及花鲜组织中总可溶性糖和可溶性蛋白质含量均增加，至小花盛开时达到最高峰其后下降；花瓣组织中超氧化歧化酶，过氧化氢酶，过氧化物酶（ＰＯＤ）的活性则是开花初期先行下降，然后升高，ＳＯＤ活性在小花盛开时达到最高峰，ＣＡＴ，ＰＯＤ活性则于小花弯曲时达到最高峰；而花瓣组织中ＭＤＡ含量在整个瓶插期均有所升高，特别是盛开期之

CHANGES OF SOME PHYSIOLOGICAL AND BIOCHEMICAL ACTIVITIES IN CUT Hedychium coronarium SPIKE DURING VASE-HOLDING LIFE

During the vase-holding life of cut Hedychium coronarium spike , the dry weight of flowerets and their contents of soluble protein and soluble carbohydrate increased at first and decreased after full bloom. The activities of SOD,CAT,POD decreased at first and then increased ,the activity of SOD peaking in the fully bloom floweret, while the activities of CAT,POD reached peaks at a relatively later time when the flowerets began to bend. The content of MDA increased all the time, but increased significantly only at the later period when the activities of SOD,CAT,POD began to decrease again. The plasma membrane permeability was stable at first and increased sharply after full bloom when the content of MDA accumulated to a high level. These indicated that disorder of active oxygen metabolism was probably responsible for the senescence of cut H. coronarium spike during the vase-holding life.