小麦不同品种磷效率比较和评价的生化指标研究  

Comparison and Evaluation of Biochemical Criteria for Phosphorus Efficiency in Wheat

作　　者：郭丽[1] 龙素霞[1] 赵芳华[1] 鲍金香[1] 郭程瑾[1] 肖凯[1] 

机构地区：[1]河北农业大学农学院,保定071001

出　　处：《植物遗传资源学报》2008年第4期506-510,516,共6页Journal of Plant Genetic Resources

基　　金："973"计划前期研究专项(2007CB116209);国家粮食丰产科技工程项目(2006BAD02A08)

摘　　要：对河北省的30个小麦品种的磷效率特征和评价的生化指标进行了研究。结果表明,供试品种在缺磷(-P)条件下的单株干重具有显著差异,供试品种-P下的磷效率可划分为高效、较高效、中效和低效等4种类型。-P处理下,单株干重和单株磷累积量随着供试品种磷效率的增大呈增加趋势;随着磷效率增大,超氧化物歧化酶(SOD)活性和过氧化氢酶(CAT)活性逐渐增加,丙二醛(MDA)含量则逐渐降低。相关分析和回归分析表明,单株干重和单株磷累积量分别与SOD活性和CAT活性呈极显著和显著正相关,与MDA含量呈极显著负相关,表明SOD活性和MDA含量可作为缺磷条件下评价小麦品种磷效率的生化评价指标。The characteristics of phosphorus efficiency and some biochemical evaluation criteria were studied using thirty wheat cuhivars from Hebei plain as the materials. The results indicated that there were obvious differences in plant dry weight in the tested cultivars under deficient phosphorus （-P） condition. The cuhivars could be classified into four types of phosphorus efficiency, including high, relative high, middle and low efficiency. Under - P condition, the plant dry weight and plant accumulative phosphorus amount showed an increase tendency, with the increase of phosphorus effi- ciency of the cuhivars. Meanwhile, the superoxide dismutase （SOD） activity and catalase （CAT） activity were gradually increased, and malonaldehyde （MDA） content was gradually decreased. The correlation analysis and regression analysis indicated that there were most positive, positive and most negative correlations between plant dry weight and SOD activity, CAT activity and MDA content, respectively, so were between plant accumulative phosphorus and SOD activity, CAT activity and MDA content, respectively. Thus, SOD activity and MDA content could be acted as the important criteria for evaluation of phosphorus efficiency under deficient phosphorus condition in wheat.

关 键 词：小麦 磷效率 生化参数 评价指标 

分 类 号：S512.1[农业科学—作物学] S831.5