Influence of endomycorrhizal fungi Glomus fasciculatum and G. eplgaeus on penetration and development of Heterodera cajanion cowpea*

Effect of earlier establishment of Glomus fasciculatum orG. epigaeus on penetration and development of H. cajani in cowpea was studied in pots. Earlier introduction of mycorrhizal fungi by 15 days adversely affected root penetration to a greater extent than simultaneous inoculations. Over 60 per cent colonization of root system by VAM fungi considerably hampered root invasion. However, the endophytes did not further influence the development of penetrated juveniles or the fecundity of the nematode.