Abstract:

The invading hyphae of Glomus clarum produced appressoria on the root surface of watermelon and soybean at 5 and 9 days after inoculation respectively. The vesicles were found in cortical cells of watermelon at 6 days after inoculation and reached abundance 2 days more. The external mycelium developed and produced spores 10 and 19 days after inoculation of watermelon and soybean respectvely.