小麦胚根脂氧合酶(LOX)活性变化与抗热—抗旱性的关系  

Relation of LOX Activity in Wheat Radicle with Drought—Heat Resistance

作　　者：张荣平[1] 王振镒[1] 高俊风[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：《干旱地区农业研究》1992年第4期81-85,共5页Agricultural Research in the Arid Areas

摘　　要：采用分光光度计法,测定了6个冬小麦品种在脱水或过热条件下胚根LOX活性的变化。研究发现,在脱水或过热条件下,LOX 活性均表现降低,但抗热—抗旱性强的品种LOX 活性降低的幅度较小,抗热—抗旱性弱的品种 LOX 活性降低的幅度较大。此结果表明,胚根 LOX 活性的变化与冬小麦的抗热—抗旱性有关并可用作鉴定其抗热—抗旱性的指标。LOX activity in wheat radicle of six winter wheat cultivars were studied using spec-trophotometric method,the results showed that in the case of dewater and overheat LOXactivity showed some drops and that LOX activity of winter wheat cultivars with strongdrought-heat resistance decreased by a small margin,while that of winter wheat culti-vars with weak drought-heat resistance decreased by a wide margin.This also indicatedthat variations in LOX activity of wheat radicle are closely related to the drought-heatresistance of winter wheat and could be used as an index to identify drought-heat resis-tance in winter wheat.

关 键 词：脂氧合酶 小麦 抗热性 抗旱性 

分 类 号：S512.101[农业科学—作物学]