“…Nine types of chrysanthemum viruses [19,28,44], namely, chrysanthemum virus B (CVB) [44,45], cucumber mosaic virus (CMV) [25], tomato mosaic virus (TMV) [25], tomato aspermy virus (TAV) [46], potato virus X (PVX) [46], potato virus Y (PVY) [47], tomato spotted wilt virus (TSWV) [48], chrysanthemum stunt viroid (CSVd) [49][50][51] and chrysanthemum chloritic mottle viroid (CChMVd) [52,53], have been reported in major functional chrysanthemum-producing areas. Most chrysanthemum viral diseases are quarantine hazards and can spread to a large area.…”