Reaction of common bean genotypes to plant parasitic nematodes

ABSTRACT Among the efficient strategies to manage plant parasitic nematodes, the use of resistant cultivars stands out for being frequently the easiest and least expensive approach that can be adopted by farmers. However, for the common bean, in Brazil, few sources of resistance have been identified so far. This study aimed to assess the reaction of 81 common bean genotypes to the most abundant and harmful plant parasitic nematode species in Brazilian crop fields. Genotypes resistant to all tested nematodes were observed: 7 to Heterodera glycines, 2 to Pratylenchus brachyurus, 15 to Meloidogyne incognita and 8 to M. javanica.

摘要 在防治植物寄生线虫的各类高效防控策略中，种植抗病品种常被视为农户最易实施且成本最低的技术手段。然而在巴西，目前已鉴定出的菜豆抗线虫种质资源寥寥无几。本研究旨在评估81份菜豆基因型对巴西农田中分布最广、危害最重的植物寄生线虫种类的抗性反应。研究共观察到对全部供试线虫均表现抗性的菜豆基因型：其中7份抗大豆孢囊线虫（Heterodera glycines）、2份抗短尾根腐线虫（Pratylenchus brachyurus）、15份抗南方根结线虫（Meloidogyne incognita），另有8份抗爪哇根结线虫（Meloidogyne javanica）。