高温下花红苋和绿叶苋叶片生理特性变化的比较

40℃连续6d处理苋菜（Amaranthus tricolor）两个栽培品种花红苋和绿叶苋，探讨热胁迫下它们生理特性的改变。结果表明：与绿叶苋相比，高温下花红苋叶中可溶性糖和脯氨酸含量明显增加，PPO（多酚氧化酶）和POD（过氧化物酶）活性增强，苋菜红素显著积累。绿叶苋对高温表现敏感，苋菜红素含量在处理2d后明显降低，膜脂过氧化产物丙二醛和质膜透性均高于花红苋，叶片呈现较明显的氧化漂白症状。与常温对照相比，高温下两种苋菜的总酚含量变化不大。热胁迫下花红苋积累较多的苋菜红素和渗透调节物质，酶活性提高，可能是其对高温逆境具有较好耐受能力的生理基础。...

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Veröffentlicht in:	Re dai ya re dai zhi wu xue bao 2009, Vol.17 (4), p.378-382
1. Verfasser:	邵玲刘光玲李芸瑛彭长连
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Schlagworte:	生理特性苋菜苋菜红素高温
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creator	邵玲刘光玲李芸瑛彭长连
description	40℃连续6d处理苋菜（Amaranthus tricolor）两个栽培品种花红苋和绿叶苋，探讨热胁迫下它们生理特性的改变。结果表明：与绿叶苋相比，高温下花红苋叶中可溶性糖和脯氨酸含量明显增加，PPO（多酚氧化酶）和POD（过氧化物酶）活性增强，苋菜红素显著积累。绿叶苋对高温表现敏感，苋菜红素含量在处理2d后明显降低，膜脂过氧化产物丙二醛和质膜透性均高于花红苋，叶片呈现较明显的氧化漂白症状。与常温对照相比，高温下两种苋菜的总酚含量变化不大。热胁迫下花红苋积累较多的苋菜红素和渗透调节物质，酶活性提高，可能是其对高温逆境具有较好耐受能力的生理基础。
doi_str_mv	10.3969/j.issn.1005-3395.2009.04.011
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subjects	生理特性苋菜苋菜红素高温
title	高温下花红苋和绿叶苋叶片生理特性变化的比较
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