土壤干旱对冬小麦功能叶过氧化物酶同工酶及抗旱性的影响

Effects of Soil Drought on Peroxidase Isoenzyme in Winter Wheat Leaves and Drought Resistance

以６个抗旱性不同的冬小麦品种为试验材料，研究了土壤干旱对拔节期冬小麦功能叶片过氧化物酶同工酶、生物产量及某些经济性状的影响。结果表明：一定程度的土壤干旱可导致小麦功能叶片过氧比物酶同工酶发生相应的变化，抗旱性不同的小麦品种其同工酶酶谱不同，其酶谱变化与抗旱性间存在着一定的相关性。

Six winter wheat cultivars were used to study the effects of soil moisture deficit on peroxidase(POD)isoenzyme,vegetable yield and some economic charncters.The results;howedthat the POD isoenzyme partern varied with soil water stress.t was different in winter wheat varieties and related to vegetable growth duration.POD isoenzyme bands and activity increased in the three drought resistant cultivars under soil moisture deficit condition at the shoot elongat-ing phase, but the bands did not increase in two other drought susceptible cultivars. The differ-ent performance observed under water stress conditions between drought resistant and susceptible wheat cultivars may be related to their adaptability to drought .