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低温预处理对大豆萌芽活力及其活性氧代谢的影响 被引量:19

THE EFFECTS OF PRECHILLING ON VIGOUR INDES AND ACTIVE OXYGEN METABOLISM OF SOYBEAN SEEDS
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摘要 采用低温 (3- 5℃ )处理大豆种子 (黑脐 91- 1)能显著提高种子萌发率和萌芽活力 ,其中以处理 15天的效果更为明显。在大豆萌发过程中 ,低温处理组的外渗电导率明显较对照组低 ,呼吸速率升高的速度较对照组更快 ,超氧物岐化酶 (SOD)和过氧化物酶 (POD)的活性均显著高于对照 ,超氧阴离子 (O2 - )含量和脂质过氧化产物丙二醛 (MDA)的积累量均明显低于对照。表明种子萌发前经低温预处理能有效提高大豆种子萌发时活性氧代谢水平 ,有利于好苗。 Soybean seeds were treated with prechilling (3-5℃). Results showed that the germination rate and vigour index of soybean seeds treated increased notably, the treatment with prechilling for 15 days was the most effective. During germinating period, the conductivity rate was lower and the respiratory intensity increased more rapidly than that of the control, the activity of superoxide dismutase (SOD), and peroxidase(POD)all increased, the rate of product of O 2 - ., and the accumulation of MDA were lower than those of the control. These indicated that prechilling could improve both the active oxygen metabolism and the seedling growth of soybean seeds during germinating period.
出处 《大豆科学》 CAS CSCD 北大核心 2001年第3期163-166,共4页 Soybean Science
基金 江苏省科委技术委员会自然基金项目 :( 1998SWXOSZ0 0 1)
关键词 大豆种子 低温 活力指数 活性氧代谢 预处理 萌芽活力 Soybean seed Prechilling treatment Vigour index Active oxygen metabolism
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