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当前位置: 首页 > 文章 > 超干处理对南桔梗种子生理特性的影响 中国农学通报 2016,32 (34) 103-107
Position: Home > Articles > Effects of Ultra Dry Treatment on Physiological and Biochemical Characteristics of Platycodon grandiflorum Seeds Chinese Agricultural Science Bulletin 2016,32 (34) 103-107

超干处理对南桔梗种子生理特性的影响

作  者：
宁书菊;郑嘉汉;林文津;韩娜;魏道智
单  位：
福建农林大学生命科学学院;福建农林大学作物科学学院
关键词：
桔梗种子;超干处理;生理生化特性
摘  要：
为了解决南桔梗种子贮藏期间生活力不断下降的问题,将同一批南桔梗种子经过不同时间的超干处理,再经过回湿处理、老化处理,测定种子的发芽率、发芽势、发芽指数、丙二醛含量、过氧化物酶活力以及种子浸出液电导率,研究超干处理对种子生理生化特性的影响。结果表明,随着超干处理时间的增加,桔梗种子含水量逐渐降低,与自然含水量对照种子相比,经老化处理后超干种子的各项生理指标保持了较高水平,发芽势、发芽指数分别高于对照3%~5%、9.6%~21.4%,回湿后种子浸出液电导率降低7.3%~28.2%,膜系统完好程度高于对照,丙二醛含量低于对照10.3%~66.1%,过氧化物酶活性高于对照10.5%~40.7%,耐贮性显著提高。研究认为,南桔梗种子超干贮藏最适合水分应在3.06%左右。
译  名：
Effects of Ultra Dry Treatment on Physiological and Biochemical Characteristics of Platycodon grandiflorum Seeds
作  者：
Ning Shuju;Zhang Jiahan;Lin Wenjin;Han Na;Wei Daozhi;College of Crop Science, Fujian Agricultural and Forest University;School of Life Science, Fujian Agricultural and Forest University;
关键词：
Platycodon grandiflorum seed;;ultra-dry treatment;;physiological and biochemical characteristics
摘  要：
To solve the declining of Platycodon grandiflorum seed viability during storage, a group of Platycodon grandiflorum seeds were processed by ultra-dry treatment with different times, and then after backwet and aging, the seed germination rate, germination, germination index, MDA content and peroxidase activityof seeds and conductivity rate of seeds extract were determined to study the effects of ultra-dry treatment onphysiological and biochemical characteristics of seed. Results showed that content of seed water graduallyreduced with ultra-dry processing time, comparing with control seeds(natural water), the physiological index ofthe ultra-dry seeds processed by aging treatment kept in a high level, the germination potential and thegermination index of seeds were higher than that of the control by 3%-5% and 9.6%-21.4%, respectively, theconductivity rate of seeds extract after back wet reduced by 7.3%-28.2%, the membrane system intact wasbetter than that of the control, the MDA content was lower than that of control by 10.3%-66.1%, the peroxidaseactivity was more than that of the control by 10.5%-40.7%, the seed storability was significantly improved. Theultra-dry storage water of the south Platycodon grandiflorum seed should be around 3.06%.

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