Abstract The sugarcane borer Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) is considered the main sugarcane pest in many countries.The use of plant genotypes less preferred by insects are among the alternative methods to control this species which can be used alone or associated with other control methods such as biological control in Integrated Pest Management (IPM) programs. We assessed if the nonpreference for oviposition of D. saccharalis in sugarcane genotypes established by seedlings is different according to ripening group and plant age. For that purpose, four experiments were performed: 1) seedlings of early-ripening genotypes, 2) seedlings of late-ripening genotypes, 3) and mix of early- and late-ripening genotypes, seedlings, and 4) plants. There were least preferred genotypes for oviposition by D. saccharalis among seedlings of early-ripening (RB965902 and RB966928) and late-ripening (RB987935) genotypes. It was also observed when the groups were mixed as seedlings (RB965902) or plants (RB925345).The nonpreference for egg deposition in different ripening groups and plant age might be useful to integrate with other strategies for the management of D. saccharalis. Moreover, results of egg distribution might indicate the likely position of resistance factors on leaves, whether morphological or chemical.

中文翻译：

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甘蔗幼苗不偏好甘蔗螟（鳞翅目：蟹科）产卵受成熟期和株龄的影响

摘要 甘蔗螟虫 Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) 在许多国家被认为是主要的甘蔗害虫。使用昆虫不太喜欢的植物基因型是控制该物种的替代方法之一，可以单独使用或与其他控制方法，例如虫害综合管理 (IPM) 计划中的生物控制。我们评估了在由幼苗建立的甘蔗基因型中对 D. saccharalis 产卵的非偏好是否因成熟组和植物年龄而异。为此，进行了四个实验：1) 早熟基因型的幼苗，2) 晚熟基因型的幼苗，3) 早熟和晚熟基因型、幼苗的混合，以及 4) 植物。D. 最不喜欢产卵的基因型。saccharalis 在早熟 (RB965902 和 RB966928) 和晚熟 (RB987935) 基因型的幼苗中。当这些组混合作为幼苗 (RB965902) 或植物 (RB925345) 时也观察到。不同成熟组和植物年龄对卵沉积的不偏好可能有助于与其他管理 D. saccharalis 的策略相结合。此外，鸡蛋分布的结果可能表明抗性因素在叶子上的可能位置，无论是形态上还是化学上。