摘要
胡柚果实贮藏前期（６２天），果皮组织中的超氧物歧化酶（ＳＯＤ）活性趋缓慢下降，过氧化物酶（ＰＯＤ）活性迅速上升，随后ＳＯＤ活性持续增加，ＰＯＤ活性略有下降并维持较高水平，果肉组织中的ＳＯＤ活性则呈相反变化，前期活性增加，于第６２天达最高，之后持续下降，但ＰＯＤ活性很低，且变化无规律。随着果皮中ＳＯＤ活性的增加和果肉中ＳＯＤ活性的下降，果实开始出现枯水（贮藏１２０～１３０天），并日趋严重。贮藏过程中果皮和果肉的可溶性糖含量均呈减少趋势，但前者变化幅度明显小于后者。１００ｍｇ／ｋｇＧＡ３处理可减缓贮藏过程果皮组织中的ＳＯＤ和ＰＯＤ活性变化、推迟果肉组织中ＳＯＤ活性高峰的出现、提高果肉中可溶性糖含量，降低果皮中的可溶性糖水平，显著地减轻果实枯水的发生。
There existed a slow decrease in superoxide dismutase (SOD) activity and a sharp increase in peroxidase (POD) activity in the earlier stage of storage, then a constant elevation in SOD activity and a less decline in POD activity appeared in the Peel of'Huyou' fruit. SOD activity in juice sacs increased in the earlier 62 days stored and went down in the following 123 days stored.There existed little activity and no obvious change of POD activity in juice sacs during storage. As SOD activity rose in Peel and lessened in juice sacs,juice sacs began to show incipient granulation (120～130 days stored)and developed in the following days.The content of soluble sugar declined in both Peel and juice sacs during storage, but it came down faster in juice sacs than in Peel.Compared with control treatment, it kept lower activity of both SOD and POD in peel,delayed the appearance of SOD activity Peak in juice sacs,had a less content of soluble sugar in Peel and a higher in juice sacs, therefore reducing the incidence of fruit granulation by GA3 treatment.
出处
《园艺学报》
CAS
CSCD
北大核心
1995年第1期35-39,共5页
Acta Horticulturae Sinica
基金
国家自然科学基金
浙江省自然科学基金
关键词
柚
枯水
超氧物歧化酶
过氧化物酶
胡柚
贮藏
Citrus, Granulation
Superoxide dismutase (SOD), Peroxidase (POD)
