Mechanism of resistance and Colletotrichum gloeosporides in resistant individual trees of Camellia oleifera.

Linda 140, a strain of the Camellia oleifera with high resistance, was obtained from Changning, Hunan, Camelliae olifara Abel produced areas. Its natural inoculation incidence was zero, fresh produced seed rate 53% and kernel oil rate 54%. The physiological biochemistry of resistance results revealed that the spore germination rate and the rate of infection had positive relativity. The POD activities were up while the SOD activities were down after inoculation. The change ranges in the POD and SOD activity was positive relativity with diseased resistance to Colletotrichum gloeosprioides within 4 d after inoculation.