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茉莉酸对低温胁迫水稻幼苗的生理效应

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茉莉酸(JA)是一种广泛存在于高等植物中的生长调节物质,作为内源信号分子参与低温冷害、高温胁迫、盐胁迫、水分胁迫、病虫害以及机械伤害胁迫等抗逆反应.选用抗冷性存在明显差异的两个水稻(Oryza sativa L.)品种日本晴和IR50作为材料,通过设置对照(未经低温处理)、低温、低温+茉莉酸(JA)3种处理,研究茉莉酸对水稻幼苗的抗冷生理效应.结果表明,添加茉莉酸溶液在一定程度上能减缓低温胁迫对水稻幼苗造成的伤害,有效地提高抗冷性,但这种缓解效应在不同水稻品种间存在一定差异.
Physiological Effects of Jasmonate (JA) on Rice Seedlings under Low Temperature
Jasmonic acid (JA) is one the important growth regulators widespread in higher plants,and involved in stresses such as low temperature,salt,water,pests and diseases,and mechanical injury,erc as endogenous signaling molecules.Two rice(Oryza sativa L.) varieties Nipponbare (resistant to low temperature) and IR50(sensitive to low temperature) were treated with the control (before treatment),low-temperature,low temperature plus jasmonic acid(JA),to study the effects of jasmonic acid on low temperature resistance of rice seedlings.The results showed that jasmonic acid solution can slow down the damage of rice seedling under on low temperature stress to some extent and effectively improve the cold resistance.The effect differred in different rice varieties.

Jasmonic acid(JA)low temperature stressrice(Oryza sativa L.)physiological effect

蔡克桐、沈其文、黄志谋、耿协议

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咸宁市农业科学院,湖北咸宁437100

茉莉酸(JA) 低温胁迫 水稻(Oryza sativa L.) 生理效应

2014

湖北农业科学
湖北省农业科学院 华中农业大学 长江大学 黄冈师范学院

湖北农业科学

CSTPCD
影响因子:0.442
ISSN:0439-8114
年,卷(期):2014.53(15)
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