This research was carried out to evaluate the yield and some resistance-related traits of three maize hybrids produced with B73 or Mo17 as the parents, against European corn borer, Ostrinia nubilalis (Hubner). Two separate experiments (with and without insecticide spraying) were conducted as a factorial experiment with two factors including sowing date at three levels (25th April, 10th May, and 25th May) and hybrids at three levels [KSC704 (B73 × Mo17), KSC705 (K3640/3 × Mo17), and KSC706 (K3547/4 × Mo17)] based on randomized complete block design with four replications for two years in Moghan region, Iran (39° 41′ N 47° 32′ E, with 32 m above the sea level). The results showed that KSC706 with 12.19 and 13.41 t ha⁻¹ had the highest grain yield in non-sprayed and sprayed conditions, respectively. In sprayed conditions, KSC705 and KSC706 showed the highest net income, while in non-sprayed conditions KSC706 showed the highest net income. Overall, KSC706 showed a reduction in net income due to insecticide application, while two other hybrids showed increasing net income due to insecticide use. This achievement demonstrated that KSC706 is relatively tolerant to ECB damage and insecticide application raises the cost of grain production while did not increase the yield. In sprayed conditions, KSC705 in the first sowing date showed the longest and KSC706 in the third sowing date showed the shortest tunnel length. In both sprayed and non-sprayed conditions, KSC706 in third sowing date showed the lowest stalk breakage percentage which could candidate KSC706 as a tolerant hybrid against ECB.

进行了这项研究，以评估以B73或Mo17为亲本的三种玉米杂交种对欧洲玉米bore，玉米rin（Hubner）的产量及一些与抗性相关的特性。作为一个因子试验，进行了两个单独的实验（有和没有杀虫剂喷雾），包括两个水平的播种日期（4月25日，5月10日和5月25日）和三个水平的杂交种[KSC704（B73×Mo17），KSC705 （K3640 / 3×Mo17）和KSC706（K3547 / 4×Mo17）]，基于在伊朗莫汉地区（39°41′N 47°32′E，32 m高于海平面）。结果表明KSC706的12.19和13.41 t ha ^-1在非喷雾和喷雾条件下，小麦的单产最高。在喷洒条件下，KSC705和KSC706的纯收入最高，而在非喷洒条件下，KSC706的纯收入最高。总体而言，由于使用杀虫剂，KSC706的净收入有所减少，而另外两种杂交种由于使用杀虫剂而显示的净收入有所增加。这一成就表明，KSC706相对耐受欧洲央行的损害，杀虫剂的使用增加了谷物的生产成本，而没有增加产量。在喷洒条件下，第一次播种的KSC705显示最长，第三次播种的KSC706显示最短的隧道长度。在喷涂和非喷涂条件下，