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干旱胁迫对白桦实生苗保护酶活性及脂质过氧化作用的影响 被引量:142

EFFECT OF DROUGHT STRESS ON ACTIVITY OF CELL DEFENSE ENZYMES AND LIPID PEROXIDATION IN LEAVES OF BETULA PLATYPHYLLA SEEDLINGS
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摘要 The active oxygen content, MDA content and electrolyte leakage in the leaves of Betula platyphylla seedlings increased under the soil drought stress. Activity of cell defense enzymes changed markedly when the stress of draught was intensified. SOD activity increased then decreased, POD activity decreased and CAT activity decreased then increased. All above physiological index returned to approach the normal level before stress after the water of soil was recovered. The active oxygen content, MDA content and electrolyte leakage in the leaves of Betula platyphylla seedlings increased under the soil drought stress. Activity of cell defense enzymes changed markedly when the stress of draught was intensified. SOD activity increased then decreased, POD activity decreased and CAT activity decreased then increased. All above physiological index returned to approach the normal level before stress after the water of soil was recovered.
出处 《林业科学》 EI CAS CSCD 北大核心 2003年第1期165-167,共3页 Scientia Silvae Sinicae
关键词 酶活性 脂质过氧化作用 白桦 实生苗 干旱胁迫 保护酶 组织自动氧化速率 膜相对透性 Drought stress, Betula platyphylla , Cell defense enzymes, Autoxidation rate
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