温度对冬小麦幼苗过氧化物酶同工酶的影响  

Effect of Temperature on Peroxidase(POD) Isozymes in Winter Wheat Seedlings

作　　者：刘丽萍[1] 宇克莉[1] 郝泗城[1] 

机构地区：[1]天津师范大学生物系

出　　处：《华北农学报》1995年第4期59-64,共6页Acta Agriculturae Boreali-Sinica

摘　　要：冬小麦幼苗经不同温度和时间处理后，对胚根、胚芽中过氧化物同工酶有较明显影响。在常温（２５℃）下，随处理时间的延长，ＰＯＤ同工酶谱带数增加，不依品种、取材部位而异；在较高温度（３０℃）下，则呈曲线式变化，即随处理时间的延长谱带数增加，到一定时间以后又减少，高峰值与品种特性、取材部位有关；在高温（４０℃、５０℃）下，谱带数呈减少趋势，处理一定时间以后锐减。不同品种耐高温的能力差异很大。The POD isozymes in radicle and plumule of two winter wheat seedlings (Zhongyin-15and 81-1 )were significantly affected after treatment by different temperatures(25℃, 30℃,40 ℃,50℃)and times (2, 4, 8, 16, 24, 48 hours), Its bands increased when treatment time prolonged at normal temperature(25℃). At 30℃, POD isozymes showed curve changes. The bands increased with the lengthening of the treatment time,but the bands decreased after reaching at a definite time. The peak value is related to the characteristics of variety and sampling position. The tendency of bands decreased at high temperature (40℃, 50℃), and decreased sharply after a period of treatment. The ability of high temperature tolerance is varited significantly among winter wheat varieties.

关 键 词：冬小麦 幼苗 温度 胚根 胚芽 过氧化物酶 同功酶 

分 类 号：S512.101[农业科学—作物学]