Rice plants infested by the nematode exhibit different reaction. Susceptible
plants express also other typical symptoms such as shortening of flag leaf which
twisted at apical portion and hinders the emergence of panicle, reduction of
panicle length and the grain number, spikelets with distorted glumes and
deformed kernels, production of tillers from the uppers nodes (Fig. 1).
However, infested plants may not exhibit any typical symptoms.