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- Title
粉红聚端孢侵染新红星苹果的侵入途径与侵染 时期.
- Authors
任艺华; 戴蓬博; 张荣; 梁晓飞; 朱明旗; 韩立新; 孙广宇
- Abstract
Apple moldy core caused by Trichothecium roseum is a severe disease. The infection route of T. roseum on Starkrimson Delicious cultivar is unclear. This research traced the pathogen colonization process of T. roseum on flower and fruit tissues of Starkrimson Delicious apple using a fluorescence labeling strain TR45. At the flowering period, the pathogen can colonize flower tissues, and cause necrosis and wilt symptom. In 10 to 15 days after flower fall, most infected flower residues accumulated within calyx tube. The pathogen mycelia infected into united style through stylar fissures, and then spread toward basal style along pluricellular hairs. In 30 days or so after flower fall, an opening sinus formed which connected calyx tube and carpel cavity. In 60 days or so after flower fall, hyphae spread into the carpel cavity along the opening sinus, and colonized fruit tissues through cracks on the carpel wall, causing fruit rot. The results reveal the reasons underlying the high incidence of moldy core disease on Starkrimson Delicious apple, and provide implication for developing new disease control strategy against apple moldy core disease.
- Subjects
ABSCISSION (Botany); FRUIT rots; CARPEL; PREVENTIVE medicine; FLOWERS; WILT diseases
- Publication
Mycosystema, 2022, Vol 41, Issue 8, p1227
- ISSN
1672-6472
- Publication type
Article
- DOI
10.13346/j.mycosystema.220141