小麦胚芽脂氧合酶(LOX)活性变化与抗热—抗旱性的关系  

Relation of lox Activity in Wheat Embryo bud With Drought—Heat Resistance

作　　者：张荣平[1] 王振镒[1] 高俊凤[1] 徐芳 

机构地区：[1]西北农业大学植物生理研究室,陕西杨陵712100

出　　处：《种子》1992年第6期17-19,共3页Seed

摘　　要：本文采用分光光度计法测定6个冬小麦品种胚芽中LOX活性的变化。研究表明,在脱水或过热条件下,抗热—抗旱性强的冬小麦品种胚芽中LOX活性有较小幅度的上升,而抗热—抗旱性弱的品种LOX活性有较大幅度的上升;经干旱锻炼的种子形成的胚芽中LOX活性的变化也有上述规律,但上升的幅度明显变小。事实上种子干旱锻炼可以更大幅度地提高抗热—抗旱性差的冬小麦品种的抗热—抗旱性,本试验中这类品种LOX活性上升的幅度比未经锻炼的明显减少,因此认定胚芽中LOX活性上升幅度的大小可作为脱水或过热条件下评价冬小麦抗热—抗旱性的一个指标。Using spectrophotometric method,we determined the LOX activity in wheat embryo bud ofsix winter wheat cultivars.The results showed that the stronger the drought—heat resis tanceof winter wheat is,the less the range of the increase of the LOX activity in wheat embryo budwill be.so do the wheat embryo bud coming from the drought—hardened wheat seeds.so wethink the increase of LOX activity in wheat embryo bud can be used as one of the indexes to ap-praise the drought—heat resistance of winter wheats.

关 键 词：小麦 胚芽 抗旱性 脂氧酶 LOX 

分 类 号：S512.103.2[农业科学—作物学]