摘要
杂交的节瓜种子经过超干贮藏后，发芽率和简化活力指数都显著地高于对照种子．节瓜种子含水量在２．５０％～６．８５％范围内，随着种子含水量的降低，种子的耐藏性不断提高．超干种子的过氧化物酶（ＰＯＤ），过氧化氢酶（ＣＡＴ）、酸性磷酸酶和超氧物歧化酶（ＳＯＤ）的活性较高；膜系统保持比较完整，种子浸泡液电导率、相对电导率、紫外吸收值均明显低于对照种子．脱水速度快慢对种子的活力有影响，回湿处理可以避免种子的吸胀损伤．超干贮藏的种子经老化处理后，其抗老化能力明显强于对照．
This paper deals with the effects of ultra-dry(UD) storage on seed vigor and storability of Benincasa hispida seeds. The results showed that UD storage did not only influence seed vigor, but also improved seed storability.Activities of POD, CAT and SOD of UD seeds remained high after one year storage, while those of CK decreased significantly. Conductivity and ageing tests indicated that the membrane system of UD seeds had good integrity.humidification tests indicated that UD seeds had imbibition injury, and the injury could be avoided by PEG treatment or humidification.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
1997年第S2期12-16,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
关键词
节瓜种子
超干贮藏
膜系统
酶活性
Benincasa hispida seed, ultradry storage, germination, membrane system
