Hessian fly, Mayetiola destructor (Say) is a destructive insect pest occurring in many wheat growing areas of the world. The most effective management option for controlling Hessian fly is the use of resistant wheat cultivars carrying specific resistance genes. However, wheat resistance genes to Hessian fly are affected by temperature. Two Moroccan cultivars ‘Chaoui’ and ‘Marouane’ and three ICARDA elites DWHF01, DWHF02 and Icamoram7 all carrying resistance to Moroccan Hessian fly populations were evaluated at three different temperatures (20, 25 and 30 °C). Results showed that the elite DWHF01 and DWHF02 resistance was less affected by higher temperatures with percentage of resistant plants remaining above 60% at 30 °C. However, ‘Marouane’, ‘Icamoram7’ and ‘Chaoui’ lost more than 50% of their resistance at 30 °C. Resistance in all these genotypes was expressed only as antibiosis with presence of dead first instars on resistant plants. The number of live larvae on susceptible plants was counted and larval density decreased with increasing temperature. Moreover, length measurements of live larvae showed significant differences across different temperatures, the size of larvae increased as temperature increased and ranged between 3.23 and 4.13 mm. In light of the warming climates and increase occurrence of days above 30 °C during the first months of the Moroccan wheat season, the data presented here are meant to help breeders recommend cultivars better adapted to the raising temperatures.

黑森苍蝇，Mayetiola的毁灭者（说）是一种破坏性的害虫，它发生在世界许多小麦产区。控制黑森州果蝇的最有效管理方法是使用携带特定抗性基因的抗性小麦品种。但是，小麦对黑森州果蝇的抗性基因受温度影响。在三个不同的温度（20、25和30°C）下，评估了两个摩洛哥品种“ Chaoui”和“ Marouane”以及三个ICARDA精英DWHF01，DWHF02和Icamoram7对摩洛哥黑森州苍蝇种群的抵抗力。结果表明，优良的DWHF01和DWHF02抗性受较高温度的影响较小，抗性植物的百分比在30°C时保持在60％以上。但是，“ Marouane”，“ Icamoram7”和“ Chaoui”在30°C时失去了超过50％的电阻。在所有这些基因型中的抗性仅以抗生物性表示，并在抗性植物上出现了先死幼虫。计算易感植物上的活幼虫数量，并随着温度的升高而降低幼虫密度。此外，活幼虫的长度测量结果表明，在不同温度下，幼虫的大小存在显着差异，幼虫的大小随温度的升高而增加，范围在3.23至4.13 mm之间。鉴于气候变暖以及摩洛哥小麦季节头几个月中30°C以上的日子增加，此处提供的数据旨在帮助育种者推荐更适合升高温度的品种。此外，活幼虫的长度测量结果表明，在不同温度下，幼虫的大小存在显着差异，幼虫的大小随温度的升高而增加，范围在3.23至4.13 mm之间。鉴于气候变暖以及摩洛哥小麦季节头几个月中30°C以上的日子增加，此处提供的数据旨在帮助育种者推荐更适合升高温度的品种。此外，活幼虫的长度测量结果表明，在不同温度下，幼虫的大小存在显着差异，幼虫的大小随温度的升高而增加，范围在3.23至4.13 mm之间。鉴于气候变暖以及摩洛哥小麦季节头几个月中30°C以上的日子增加，此处提供的数据旨在帮助育种者推荐更适合升高温度的品种。