Identification of the Pathogens and Laboratory Bioactivity Determination of the Rot Disease of Kiwifruit (Actinidia spp.)

Kiwifruit is an important economic crop in the world today with a high nutritional value. It can cause huge damage by causing kiwifruit rot disease; however, at present, control methods for this disease are limited. In study, rotten fruits of (Cultivar “Jinyan”) were collected from Pujiang city (Sichuan province), Xixia city, (Henan Zhouzhi (Shaanxi Meixian and Bijie (Guizhou China, pathogenic fungi identified isolation purification, pathogenicity test, morphological characteristics, analysis ribosomal DNA internal transcribed spacer (rDNA-ITS) sequences. The results showed that Botryosphaeria dothidea Dothiorella gregaria. Meanwhile, vitro antifungal activity 11 kinds fungicides 5 plant essential oils against B. D. gregaria determined all tested had certain inhibitory effect on Among them, propiconazole best EC50 value 4.10 mg/L, quinolinone 10.05 mg/L. Moreover, pesticides have practical application values prevention treatment fruit diseases pathogens.