Maize (Zea mays L.), one of the three most important cereal crops worldwide, is stored in Sub-Saharan Africa to ensure the food resource availability throughout the year. However, maize stored often encounters losses in excess of 20% due to pests such as the larger grain borer, Prostephanus truncatus (Horn) (Coleoptera; Bostrichidae), a major pest of stored maize in tropical countries. This study aims to assess the maize varieties attractance and repellence for P. truncatus oviposition and to explain the role of grains morphophysical and biochemical characteristics on susceptibility. Twenty-five male/female pairs of insect were equidistantly placed in environment containing nine 30 g subsamples maize grains of the different varieties. Susceptibility parameters such as parent adults occurrence, number of emerged insects, grains damage and grains weight loss had highlighted significant differences in maize attractance and repellence to P. truncatus oviposition between maize varieties evaluated. Most attractant maize variety to P. truncatus was Synth-C, recording 6.00 ± 2.65 adults emergence per 30 g grains, with 3 times higher individuals number than that of Early-Thai followed variety. This variety (Early-Thai) recorded 2 fold or greater insects progeny than Synth-9243 and DMR-ES varieties. Inversely, most repellent varieties to P. truncatus were Across-Pool, Obatampa, SWAN, Tzee-White and Tzee-Yellow. For these maize varieties, the larger grain borer did not record emergence, and therefore the maize varieties exhibited not any attacks or losses. To assess the relationship between grains morphophysical and biochemical characteristics and varietal susceptibility, phenolics, palmitic acid, hardness, clarity, color and size of grains were evaluated according to standardized methods. Spearman binary correlations showed varietal attractance to P. truncatus oviposition was positively related to grains high palmitic acid content and large grains size. Conversely, repellent maize to P. truncatus oviposition can be described as a variety with high phenolics content and high grains clarity.

玉米（Zea mays L.）是世界上最重要的三种谷物作物之一，存储在撒哈拉以南非洲，以确保全年可获得的粮食资源。但是，由于害虫，例如较大的谷物蛀虫Prostephanus truncatus（Horn）（鞘翅目； Bostrichidae）等害虫，在热带地区存储的玉米经常遭受超过20％的损失。这项研究旨在评估玉米品种对P. truncatus的吸引和排斥。观察并解释谷物的形态和生化特性对药敏性的作用。将25对雌雄昆虫等距放置在环境中，该环境包含9个30 g不同品种的玉米子样品。易感性参数，如亲本成虫的发生，出现的昆虫数量，谷物的损害和谷物的重量减轻，突出了所评估玉米品种之间的玉米引诱力和对截纹夜蛾产卵的排斥力的显着差异。大多数引诱玉米品种P.截是Synth-C，每30克谷物记录6.00±2.65个成年人出苗，其个体数量是泰国早熟品种的3倍。与Synth-9243和DMR-ES品种相比，该品种（泰国产）记录的昆虫后代高出2倍或以上。相反，对P. truncatus的驱蚊品种最多的是Across-Pool，Obatampa，SWAN，Tzee-White和Tzee-Yellow。对于这些玉米品种，较大的bore虫没有出现，因此玉米品种没有表现出任何侵袭或损失。为了评估谷物的形态物理和生化特性与品种敏感性之间的关系，根据标准化方法评估了酚类，棕榈酸，谷物的硬度，净度，颜色和大小。Spearman二元相关性显示对run藜产卵与棕榈酸含量高和籽粒尺寸大呈正相关。相反，驱虫玉米对P. truncatus产卵可被描述为具有高酚含量和高谷物清晰度的品种。