George V. ThomasRajagopal, V.Bopaiah, B.M.2014-08-192014-08-191993J.Plantn.Crops 1993 Suppl. v-21 p-98-103http://hdl.handle.net/123456789/4834Colonization by vesicular - arbuscular mycorrhizae (VAM) was studied during stress period from five culti vars/hybrids of coconut each, characterised as drought tolerant and drought sensitive on the basis of physiological parameters. The drought tolerant ones had a greater proportion of roots with VAM colonization than the sensitive ones. Data on infection grading revealed that palms in the tolerant group also had more number of roots with higher intensities of infection. Comparison of colonization pattern of VAM in three coconut hybrids during and after the stress revealed the superiority of MYD x WCT over COD x WCT and MODxWCTin harbouring higher level of VAM colonization in roots during stress period. There was positive relationship between VAM colonization and water relation aspects namely stomatal resistance and leaf water potential.enArticle