摘要： 对中国和加拿大合作的有关小麦叶片失水率的研究结果进行了分析，用冬小麦抗旱性状遗传规律研究筛选出的典型材料，分别在中国和加拿大的实验室进行离体叶片失水率测定，结果表明，同一测定者的不同重复间的重复性较高，同一试材不同测定者之间重复性较差；离体叶片失水率值与品种的旱地产量之间未发现有相关关系。因此，将离体叶片失水率用作小麦抗旱性状选择指标目前条件尚不成熟。

关键词: 小麦, 离体叶片, 失水率, 抗旱性指标

Abstract: The results of China-Canada joint study on rate of water loss of wheat leaf were analysed. Rates of excised leaf water loss of the typical materials selected from the study of drought resistance genetic pattern in winter wheat were tested in project laboratories in both China and Canada. The result showed that repeatability among different replications which were carried out by the same testers was high, while the same testing materials resulted in lower repeatability among different tester. Correlation between rate of excised leaf water loss and crop yield on dryland was not found. Therefore, it was still premature to use the rate of excised leaf water loss as an indicator for drought resistance selection in wheat.

Key words: Wheat, Rate of excised-leaf water loss, Drought resistance, Indicator

中图分类号: 

• S512.1