【摘要】 以２年的冬小麦区域试验参试品系为材料，测定分析了离休叶片失水速率（ＲＷＬ），叶片蒸腾速率（ＴＲ）和叶片初始含水量（ＩＷＣ）。结果表明，ＲＷＬ、ＴＲＲ和ＩＷＣ都存在显著的基因型差异。品系间排序在不同次测定中有波动，但有基本稳定的趋势。不同试验区同一次ＲＷＬ的测定结果综合可比性较好，ＲＷＬ和ＩＷＣ趋向正态分布。ＲＷＬ和ＴＲＲ无相关关系，ＲＷＬ和ＩＷＣ有微弱的正相关趋势，３个性状与产量都不相关，根据此结果在同时选择较低的ＲＷＬ和ＴＲＲ方面进行了探讨。更多还原

【Abstract】 Rate of water loss of excised-leaves(RWL), transpiration rate of leaves (TRR) and iniftial water concentration (IWC)were studied in Lines of yield regional tests in two years.The results show that there are significant genotypical differences for all the three genotype orders for the above traits in spite of fluctuations. RWL data from different regional tests at the same time could be satisfactorily analyzed as a whole. RWL and IWC tend to normal distributions. There is no correlation between RWL and TR, but a weak positive correlationRWL and IWC. The three traits are not correlated with grain yield. Based on this result,selection of drought tolerance for both low RWL and TR was discussed.更多还原