Tomato production in the tropics is threatened by whitefly infestation and tomato leaf curl virus (ToLCV) causing severe economic losses. No stable resistance to these biotic challenges has been identified in eastern India. Therefore, initial screening of 19 advance breeding lines of tomato was carried out during the year 2016–17. Based on the whitefly population per leaf and tomato leaf curl disease severity, eight tomato genotypes were selected for final screening during the year 2017–18. Morphological leaf traits and biochemical parameters in tomato leaf were assessed in selected genotypes and considered as potential mediators of resistance. Significant variation was observed for whitefly infestation and ToLCV disease severity among the tomato genotypes tested. Higher leaf trichome density with narrow and thinner leaves and higher total phenol content in leaf emerged as reliable morphological and biochemical markers for early selection of tomato genotype resistant to whitefly and ToLCV disease. The resistance of tomato genotypes 2016/Res-1, 2015/Res-5, 2014/Res-1 and 2014/Res-4 to both whitefly and ToLCV disease is based on antixenotic properties and they could be utilized in future breeding to enhance stable resistance against these biotic challenges.

热带地区的番茄生产受到粉虱侵染和 番茄卷叶病毒 （ToLCV）的威胁，造成严重的经济损失。对这些生物挑战没有稳定的抵抗力 已在印度东部发现。因此，在2016-17年度对19个番茄高级育种系进行了初步筛选。根据每叶粉虱种群和番茄叶片卷曲病的严重性，在2017-18年间选择了八种番茄基因型进行最终筛选。在选定的基因型中评估了番茄叶片的形态特征和生化参数，并被认为是潜在的抗性介体。在所测试的番茄基因型中，观察到粉虱侵染和ToLCV疾病严重程度的显着差异。较高的毛状体密度，叶片较窄和较薄，叶片中总酚含量较高，已成为早期选择抗粉虱和ToLCV病害的番茄基因型的可靠形态学和生化指标。