Abstract: To identify the pathogen causing anthracnose in golden passion fruit（Passiflora edulis Sims), a pathogenic fungus isolated from diseased tissues was identified as Colletotrichum gloeosporioides using a combination of morphological observation, molecular biological analysis, and pathogenicity testing. The effects of different culture media, carbon sources, nitrogen sources, pH, and temperatures on the mycelial growth of this pathogen were investigated by the mycelial growth rate method, and its sensitivity to five fungicides was determined. The results showed that PDA medium was the most suitable for the growth of Colletotrichum gloeosporioides from golden passion fruit; glucose was the optimal carbon source and peptone was the optimal nitrogen source. The suitable temperature range for mycelial growth was 25-30 ℃, with the optimum temperature being 28 ℃, and the pathogen could grow at pH 4-10. Fungicide sensitivity tests revealed that all five tested fungicides inhibited the mycelial growth of the pathogen. Among them, 50% carbendazim and 75% trifloxystrobin·tebuconazole exhibited the strongest inhibitory effects, with 100% inhibition rates at all five tested concentrations. The inhibitory effects of 75% chlorothalonil and 25% pyraclostrobin were moderate, and 80% mancozeb exhibited the weakest inhibitory effect.

Key words: golden passion fruit（Passiflora edulis Sims), anthracnose, Colletotrichum gloeosporioides, biological characteristics, fungicide