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研究了28份各小麦材料对生育后期高温胁迫的不同反应。在田间于籽粒灌浆期用塑料简棚遮盖供试材料4d或通过冬播推迟其开花期达到高温胁迫处理目的，最后根据千粒重计算各基因型的感热指数（S）大小评价其对高温的适应性，结果表明基因型之间存在明显不同。通过相关分析证实上述研究方法可作为今后开展耐热（高温）性田间鉴定筛选的简便、有效手段。研究还发现，单株产量和穗粒重与其感热指数均呈显著正相关（r＝0．371，0．377），但一些高产品种也具有较强的耐热性。
The different responses of 28 wheat cultivars to high temperature stress during late growth stage were studied. In the field during the grain filling stage with plastic shed to cover the test material 4d or postponed by winter sowing its flowering stage to high temperature stress treatment purposes, and finally according to the 1000-grain weight of each genotype sensible heat index (S) size evaluation of its high temperature adaptation The results show that there is a significant difference between the genotypes. Through the correlation analysis, it is confirmed that the above research methods can be used as a convenient and effective method to carry out field screening of heat-resistant (high temperature) in the future. The study also found that there was a significant positive correlation between yield per plant and grain weight and its sensible heat index (r = 0.371,0.377), but some high-yielding varieties also had strong heat-tolerance.