Root-knot nematodes (RKNs; Meloidogyne spp.) are becoming a serious problem in legume production. This study identified Vigna genotypes exhibiting resistance to M. incognita (RKN) and characterized the modes of the resistance to M. incognita. In total, 279 accessions from 21 Vigna species were screened for resistance based on a galling index (GI) and an egg mass index (EI). Seven accessions were highly resistant to RKN with GI≤25, namely JP74716 (V. mungo var. mungo; cultivated black gram), JP107881 (V. nepalensis), JP229392 (V. radiata var. sublobata; wild mungbean), AusTRCF118141 (V. unguiculata subsp. unguiculata; cultivated cowpea), AusTRCF306385 (V. unguiculata subsp. unguiculata), AusTRCF322090 (V. vexillata var. vexillata; wild zombi pea) and JP235929 (V. vexillata var. vexillata). JP229392 and AusTRCF322090 were the most resistant accessions having EI values of 18.74 and 1.88, respectively. Continuous culture of M. incognita on both JP229392 and AusTRCF322090 resulted in a weakness in pathogenic ability for this RKN. The resistance in JP229392 and AusTRCF322090 to RKN appeared to be antibiosis that was associated with reduced nematode penetration, retardation of nematode development and impeding giant cell formation. The Vigna germplasm resistance to RKN identified in this study could be utilized as gene sources for the development of RKN-resistant Vigna cultivars.

根结线虫（RKN；Meloidogyne spp。）正成为豆类生产中的一个严重问题。这项研究确定了表现出对隐杆线虫（RKN）抗性的Vigna基因型，并表征了对隐杆线虫的抗性模式。总共基于胆汁指数（GI）和鸡蛋质量指数（EI）筛选了来自21种Vigna物种的279个种质的抗性。七个种质是高度耐RKN与GI≤25，即JP74716（V.蒙哥变种蒙哥;栽培黑克），JP107881（V.大黄）， JP229392（V.辐射变种sublobata;野生绿豆），AusTRCF118141（豇豆亚种豇豆;栽培豇豆），AusTRCF306385（豇豆亚种豇豆）， AusTRCF322090（V. vexillata变种vexillata;野豌豆zombi）和JP235929（V. vexillata。VAR vexillata）。JP229392和AusTRCF322090是EI值分别为18.74和1.88的最强抗性种质。隐孢子虫的连续培养JP229392和AusTRCF322090上的这种作用均导致该RKN的致病能力弱。JP229392和AusTRCF322090中对RKN的抗药性似乎是抗微生物作用，与减少的线虫穿透，线虫发育延迟和巨细胞形成有关。在这项研究中确定的对RKN的Vigna种质抗性可用作开发耐RKN的Vigna品种的基因来源。