The potato cyst nematodes (PCN) Globodera rostochiensis and G. pallida are among the most important pests causing significant yield loss in potato production. Cultivating resistant cultivars of potato is the most effective and environmentally safe method for protecting potato crops against nematodes. However, widespread cultivation of cultivars resistant to G. rostochiensis can affect the reproduction of G. pallida. Therefore, breeding for resistance to nematodes remains among the major aims of potato breeding programmes. Many wild Solanum species could be valuable sources of nematode resistance. This study examined the resistance to G. pallida identified in two accessions of the wild species Solanum gourlayi. Both accessions demonstrated resistance to pathotypes Pa2 and Pa3, but show asymmetric distribution of resistance among the progeny clones. The presented distributions of resistance scores indicate quantitative nature of resistance to G. pallida. Furthermore, this resistance is specific to each pathotype and may be controlled by different genes. We also conclude that there is a need for independent evaluation of resistance for both pathotypes of G. pallida (Pa2 and Pa3).

马铃薯囊肿线虫（Globodera rostochiensis）和苍白球菌是最重要的害虫，在马铃薯生产中引起明显的产量损失。培养马铃薯的抗病品种是保护马铃薯作物免受线虫侵害的最有效，最环保的方法。然而，品种抗性的广泛种植G.线虫能影响的再现G.淡紫。因此，针对线虫的抗性育种仍然是马铃薯育种计划的主要目标之一。许多野生茄属物种可能是线虫抗性的重要来源。这项研究检查了对G. pallida的抗药性在两个野生种Solanum gourlayi中鉴定到。两种登录号均表现出对病原体Pa2和Pa3的抗性，但在后代克隆之间显示抗性的不对称分布。提出的抗性得分分布表明了对G. pallida的抗性的定量性质。此外，这种抗性对每种病态特异，并且可以由不同的基因控制。我们还得出结论，有必要对苍耳假单胞菌的两种病理类型（Pa2和Pa3）的抗药性进行独立评估。