The passion fruit woodiness disease, caused by the cowpea aphid-borne mosaic virus (CABMV), is the most important disease and represents a limiting factor for culture. Cultivars with resistance levels are being developed from backcrosses associated with a recurrent selection program. Studies showing how segregating populations respond to infection over time and describing resistance are necessary and make it possible to characterize the genotypes and select the most promising ones. Therefore, the present study aimed to describe the pathogenesis; evaluate resistance in the Passiflora sp. × CABMV pathosystem; and select the most resistant individuals for generation advance in the recurrent selection program in passion fruit. Five generations of crossbreeding were used, namely, interspecific hybrid, backcrosses BC_1.1 and BC_1.2 and parents P. edulis and P. setacea. The plants were inoculated in a greenhouse and evaluated for resistance to CABMV. The area under the disease progress curve (AUDPC) was calculated and variance components and genetic values were estimated for the populations under study. High genetic variability was observed between the individuals, ranging from asymptomatic plants to plants exhibiting the most severe symptoms of the disease. Four phenotypic groups were formed, allowing greater differentiation between the generations and their parents. The presence of CABMV was confirmed in plants of the BC_1.1 generation and of P. edulis, with characteristic symptoms of the virus. In asymptomatic plants, 75% of the individuals were considered resistant by PTA-ELISA and RT-PCR. The majority of individuals selected for resistance to CABMV belonged to the BC_1.2 generation, which might thus be included in the recurrent selection program.

由豇豆蚜虫传播的花叶病毒 (CABMV) 引起的百香果木本病害是最重要的疾病，也是培养的限制因素。具有抗性水平的品种正在从与循环选择程序相关的回交中开发出来。显示隔离种群如何随着时间的推移对感染做出反应和描述抵抗力的研究是必要的，这使得表征基因型和选择最有希望的基因型成为可能。因此，本研究旨在描述发病机制；评估西番莲的抗性sp. × CABMV 病理系统；并在百香果的循环选择程序中选择最具抗性的个体进行世代推进。使用了五代杂交，即种间杂种、回交 BC _1.1和 BC _1.2以及亲本P. edulis和P. setacea. 将植物接种在温室中并评估对 CABMV 的抗性。计算疾病进展曲线下面积 (AUDPC)，并估计研究人群的方差分量和遗传值。在个体之间观察到高遗传变异性，从无症状植物到表现出最严重疾病症状的植物。形成了四个表型组，允许世代和他们的父母之间有更大的差异。在 BC _1.1代和P. edulis 的植物中证实了 CABMV 的存在，具有病毒的特征性症状。在无症状植物中，75% 的个体被 PTA-ELISA 和 RT-PCR 认为具有抗性。大多数被选为对 CABMV 具有抗性的个体属于 BC _1.2代，因此可能被包括在循环选择程序中。