Resistance to Tomato Yellow Leaf Curl Virus from Reunion Island in Tomato Breeding Lines

Abstract

Three tomato (Solanum lycopersicum) lines and a variety reported to be resistant to tomato yellow leaf curl virus (TYLCV) in Cuba were tested against a TYLCV isolate from the Reunion Island (TYLCV-Mld [RE]) as well as an Israeli resistant line TY-172 and TYLCV-susceptible lines R-13 (Israel), 13-8-2 (Cuba) and cv. 'Farmer.' Resistance was evaluated by using viruliferous whiteflies and virus-infected scions. The TYLCV-resistant lines: 13-8-1, LD 5, LD 6, TY-172 and cv. 'Vyta' did not show viral disease incidence and symptoms in the plants. On the contrary, the TYLCV-susceptible lines R-13, 13-8-2 and cv. 'Farmer' showed TYLCV-Mld [RE]-like strong symptoms after vector inoculation and grafting. The development of cultivars resistant to various TYLCV isolates present indifferent geographical areas should be possible by use of resistant germplasm.