Plant Breeding (2016) 135, 525-530

Mounira Elbaz, Peter Hanson, Salah Fgaier and Asma Laarif (2016)
Evaluation of tomato entries with different combinations of resistance genes to tomato yellow leaf curl disease in Tunisia
Plant Breeding 135 (4), 525-530
Abstract: Tomato yellow leaf curl virus (TYLCV) is one of the most widespread begomoviruses transmitted by the whitefly Bemisia tabaci that cause tomato yellow leaf curl virus diseases (TYLCDs). TYLCD losses can be especially severe in open-field tomato (Solanum lycopersicum L.) crops. TYLCV is particularly well known and widespread in the Mediterranean (Med) countries where TYLCD control is mostly based on insecticidal control of B. tabaci populations. Unfortunately, Tunisian B. tabaci populations include Middle East-Asia Minor I and the Med species that have developed resistance to many classes of insecticides. Therefore, TYLCD-resistant cultivars are essential for sustainable disease management. Six TYLCD resistance genes (Ty) have been introgressed from wild species into cultivated tomato and are available for breeding. Information on the Ty genes or gene combinations is useful for breeding resistant cultivars. To this end, 14 tomato lines carrying different Ty gene combinations and two susceptible tomato entries were evaluated for TYLCD incidence and severity in two field trials during late season in Tunisia. Entries with Ty-1/Ty-3 + Ty-2 offered the highest levels of resistance in Tunisia.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Asma Laarif

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tomato yellow leaf curl virus	Tomato (Solanum lycopersicum)	Tunisia