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Evaluation of 200 Tomato Wild Accessions for Resistance to Tomato Spotted Wilt Virus (TSWV)
On-Sook Hur,Na-Young Ro,Sukyeong Lee,Aejin Hwang,Seonghoon Kim,Bich-Saem Kim,Awraris Derbie Assefa,Bum-Soo Hahn 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Tomato spotted wilt virus (TSWV) is an economically damaging pathogen of tomatoes. Typical symptoms of TSWV include wilting or stunning plants and chlorotic or necrotic rings on leaves and fruits. The effective management for TSWV is breeding tomato cultivars containing the Sw-5 from an unknown Solanum peruvianum. Unfortunately, several Sw-5 resistance-breaking strains of TSWV have been identified. Sw-7 from S. chilense accession LA1938 is an alternative locus conferring resistance to TSWV. The objective of this study was to find tolerant or resistant germplasm to TSWV. A total of 200 tomato wild accessions were evaluated for the resistance to TSWV using a bioassay with strain TSWV-SW-TO2. IT173785 (S. peruvianum) and 5 accessions of S. pimpinellifolium including TI173719 were showed apparent recovery or no symptom on upper leaves at 4 weeks later after inoculation. We will conduct the high resolution DNA melting analysis (HRM) with Sw-5 and Sw-7. These selected accessions will hopefully contribute for new source of resistance in tomato for protection against TSWV.