Susceptibility of Jordanian tomato landraces to tomato yellow leaf curl virus
2003
Qaryouti, M.M. (National Center for Agricultural Research and Technology Transfer, Baga (Jordan). Irrigated Agricultural Research Program) | Hurani, O.M. | Mahadeen, A.Y.
Forty-nine accessions of tomato landraces collected from local farmers during the period 19831995 were evaluated for tomato yellow leaf curl virus (TYLCV) susceptibility during the 2001/2002 season. Forty-five-day-old seedlings were subjected to field infection with Bemisia tabaci, the natural vector of TYLCV. A disease severity scale from zero (no visible TYLCV symptoms) to four (severe symptoms) was used to determine TYLCV susceptibility. Fruits were harvested several times to determine total yield, average fruit number per plant, average fruit weight, fruit shape and size. The results showed that accessions 971b, 951, 952, 989 and 968 had no visible TYLCV symptoms with fruit yields ranging from 39.5 to 45.1 t/ha. Yields of five other accessions (979, 981, 991a, 976 and 975) ranged from 52 to 59 t/ha with slight TYLCV symptoms, indicating good source for further TYLCV resistance studies
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