摘要
以小麦品种济麦22和山农17为材料,研究了不同温度及20%PEG-6000模拟干旱条件下小麦种子萌发过程中抗氧化酶和α-淀粉酶活性、可溶性糖含量的变化。结果表明,在不同温度和模拟干旱条件下,POD、SOD活性随着萌发时间的延长而升高,但在不同温度下活性的高低不同;CAT活性在20℃和25℃条件下先升高后降低,在其他处理下逐渐升高;20%PEG-6000处理的抗氧化酶活性要比同温度下正常萌发的低。可溶性糖含量在萌发初期迅速升高,然后降低。α-淀粉酶活性随着萌发时间的延长而升高,在25℃和20℃条件下达到最高值后开始下降。
Using wheat varieties Jimai 22 and Shannong 17 as materials,the changes of antioxidant enzyme and α-amylase activities and soluble sugar content during wheat seed germination were studied under different temperature and 20% PEG-6000 simulation drought conditions.The results showed that POD and SOD activities increased with the extension of germination time and were different at different temperatures.CAT activity increased at first and then decreased under 20℃ and 25℃ conditions,while increased gradually under other conditions.The antioxidant enzyme activity treated with 20% PEG-6000 was lower than that germinated normally at the same temperature.Soluble sugar content rose rapidly at the initial period of germination and then decreased.Alpha amylase activity increased with the extension of germination time and declined after reaching the peak under 25℃ and 20℃ conditions.
出处
《山东农业科学》
2013年第7期42-45,共4页
Shandong Agricultural Sciences
基金
国家自然科学基金项目(31171626)资助
关键词
小麦种子
萌发
抗氧化酶活性
可溶性糖
Α-淀粉酶活性
Wheat seed
Germination
Antioxidant enzyme activity
Soluble sugar
Alpha amylase activity
