Abstract: Using artificial inoculation method in greenhouse，the resistance of horned melon
（Cucumis metuliferus）‘CM3’strain against Meloidogyne incognita was evaluated，and the resistance to
root-knot nematodes developmental pathology was observed. The results showed that C. metuliferus
‘CM3’had a stable resistance to M. incognita. There were some significant differences on the root knot
number，size between C. metuliferus‘CM3’and C. sativus‘9930’. The observation of M. incognita
developmental stage revealed that the development of J2 M. incognita was suppressed in C. metuliferus. M.
incognita was able to complete their life cycle in C. sativus‘9930’within 21 d，but could not complete
their life cycle in C. metuliferus within 28 d，only a small number of nematodes could develop to the adult
stage in 42 d. The resistance identification of C. metuliferus to M. incognita provided a useful basis for
cucumber breeding.

Key words: Cucumis metuliferus, Meloidogyne incognita, resistance identification, nematode development