【摘要】 本文旨在探讨干旱胁迫下不同Ｃａ^２＋浓度处理对小麦种子萌发期间某些酶活性及发芽率的影响。将豫麦１３６４的种子分别用０．１０％～０．５０％Ｃａ２＋处理６～３０ｈ，后置于－０．７０ＭＰａＰＥＧ下萌发。结果表明，用０．１０％～０．３０％Ｃａ２＋处理种子６～３０ｈ，萌发期间α－淀粉酶、过氧化物酶活性显著高于水浸泡处理的，增强呼吸作用，提高发芽率。其中用０．１８％Ｃａ２＋处理３０ｈ，０．２０％Ｃａ２＋处理２４ｈ，０．２４％Ｃａ２＋处理１８ｈ，０．３０％Ｃａ２＋处理１２ｈ，０．４０％Ｃａ２＋处理６ｈ，酶活性最高，发芽率也最高。Ｃａ２＋处理超过０．４０％，酶活性急剧下降，发芽率也明显降低。更多还原

【Abstract】 This paper studied relationship between Ca2+ concentration treatment and some enzyme,activities and germination percentage of wheat seeds in germination stage under drought stress. Wheat seeds of Yu Mai No. 13 were treated by0. 10% -- 0. 50%Ca2+for 6-30hours,then germinated in-- 0. 70MPa PEG. It was showed that activities of α￣Amylase and peroxidase by 0. 10% -- 0. 30 %Ca2+treatment for 6￣ 30hours were much more intensive than water treatment’s, respiration of germination stage was intensified, germination percentage was increased. However, enzyme activities and germination percentage were decreased by much more than 0. 40%Ca2+ concentration treatment.更多还原