Production Passiflora edulis f. edulis Sims. (purple passion fruit) in Kenya is limited by the root fungus Fusarium. Some ornamental and wild Passiflora species have been found to be Fusarium-resistant though not compatible with Passiflora edulis f. edulis. This experiment was conducted to determine; graft compatibility between Passiflora edulis f. edulis scions and eight (P. altinis. P. biflora, P. caerulea, P. citrina, P. edulis, P. incarnata and P. yukatanensis) Passiflora species of two subgenera all cleft grafted and cyanohydrin glycoside type and content present in the foliage, stems of rootstalks and scion. Cyanohydrin glycoside analysis was carried out using a colorimetric assay of frozen stem and leaf samples. Passiflora incarnata and P. caerulea both members of the Passiflora subgenera had high percent (> 89%) graft success with P. edulis f. edulis scions. Species within the same subgenera (P. incarnata, P. caerulea and P edulis) and having the lowest concentration < 2.0 μmols amygdalin equivalents/g fresh weight of cyanohydrin glycoside had the greatest grafting success. Only P. edulis had type IV cynohydrin glycoside while P. altinis. P. biflora, P. caerulea, P. citrine and P. incarnata had type II cynohydrin glycoside.
