热风干燥温度对南瓜子种子活力的影响  

Effect of Hot Air Drying on the Vitality of Pumpkin Seeds

作　　者：蒋怡 敬璞[1] JIANG Yi;JING Pu(School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学农业与生物学院,上海200240

出　　处：《包装工程》2021年第9期49-55,共7页Packaging Engineering

基　　金：国家重点研发计划(2018YFD0700200)。

摘　　要：目的探究热风干燥对南瓜子活力的影响,得到可推广的南瓜热风干燥温度参数,为种子干燥加工提供参考。方法选用新鲜南瓜种子作为实验材料,设置自然阴干,以及30,35,40,45,50,55,60℃等8种不同干燥温度(±1℃),在4℃下保存30 d后测定其发芽率和发芽势,用丙二醛含量和超氧化物歧化酶活性以及幼苗的发育状况等指标表征南瓜子活力。结果最终确定适合南瓜子的干燥温度为55℃,此条件下南瓜种子的发芽率最高,为71%,发芽势为28%,丙二醛含量和超氧化物歧化酶活性均最低,种苗和根系发育的综合指数较高。结论55℃热风干燥温度可以较好地保留南瓜子活力,该温度下南瓜子老化损伤在研究范围内最小。Seed processing plays an important role in the agricultural product industry.After the seeds are dried,not only the moisture content is controlled within an appropriate range,but the storability is enhanced,and the vitality and genetic integrity of the seeds are also preserved.In this paper,fresh pumpkin seeds are used as experimental materials to explore the germination rate and germination potential at eight different drying temperatures of 30,35,40,45,50,55 and 60℃(±1℃).At the same time,the seed aging degree,the root length of the obtained seedlings,the length of the seedlings and other parameters are compared.Finally,the drying temperature suitable for pumpkin seeds is determined to be 55℃.Under this condition,the pumpkin seeds have the highest germination rate of 71%,and the seed vitality is damaged,and the seedlings and roots are well developed.This research aims to provide scientific basis and operational reference for production activities,thereby providing reference for the sustainable development of pumpkin industry.

关 键 词：南瓜子 种子干燥 种子活力 发芽率 种苗 

分 类 号：S375[农业科学—农产品加工]