Host-parasite relationships of Colletotrichum leaf disease in rubber [Hevea]
1982
Liyanage, A. de S. | Alwis, L.R.S. de
Conidia of Colletotrichum gloeosporioides germinated equally well on both susceptible and tolerant Hevea clones. Initially, there was no difference in germ tube growth between clones, but at 24 h after inoculation clones RRIC 52 and PB 86 showed the maximum and minimum growth, respectively. Appressoria were observed 6 h after inoculation, with clone RRIC 52 producing significantly more appressoria than PB 86. They were broader than the conidium and were frequently observed between anticlinal walls of adjoining epidermal cells. The fungus gained entry into the host about 9 h after inoculation and grew inter and intra cellularly. Acervuli were produced 72 h after inoculation
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