Three experiments were conducted to inoculate more than 40 Leucadendron genotypes both as established plants and as excised cuttings with Phytophthora cinnamomi pathogen. Both lesion development and plant death at day 12, day 24, day 36 and day 52 after inoculation were recorded to evaluate the tolerance and susceptibility of Leucadendron genotypes.
The aims of this research are:
1. to develop a protocol for the screening of Leucadendron genotypes tolerant or susceptible to Phytophthora cinnamomi, and
2. to rank the important Leucadendron genotypes used in the breeding program.