Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Genetic approaches for mitigating losses caused by bacterial wilt of tomato in tropical islands
Ist Teil von
European journal of plant pathology, 2015-10, Vol.143 (2), p.205-221
Ort / Verlag
Dordrecht: Springer Netherlands
Erscheinungsjahr
2015
Link zum Volltext
Quelle
SpringerLink (Online service)
Beschreibungen/Notizen
Bacterial wilt, caused by Ralstonia solanacearum (Smith, US Department of Agriculture, 12, 1–28, 1986) Yabuuchi et al. (Microbiology and Immunology, 39, 897–904, 1995) (formerly Pseudomonas solanacearum), causes 35–90 % yield loss in tomato production in hot-humid tropical regions. Commonly used strategies for minimizing incidence of bacterial wilt include choosing resistant varieties, cocopith based growing media, chemical methods, grafting on resistant rootstocks, application of biocontrol agents and field management practices. The cultivation of resistant varieties is the most appropriate and eco-friendly way to manage the soil borne diseases in crops but the same is not fitting well with bacterial wilt in tomato. In this review, a systematic analysis has been made on reaction of 526 genotypes of tomato to R. solanacearum pathogen tested over a 30 year period in Andaman Islands and identified 37 genotypes as highly resistant (HR), 58 as resistant (R) and 151 as moderate resistant (MR). None of the claimed resistant genotypes exhibited stable and durable resistance against this pathogen and no single genotype reported in HR category (after 2002) except only two genotypes in R category. The period for a genotype to shift from resistance to susceptible is very short because of pathogen evolution hence, it is necessary to constantly develop new resistant varieties in tomato against R. solanacearum. The review also suggests breeding strategies for rapid development of bacterial wilt resistant varieties in tomato in order to minimize the yield losses especially in the tropical conditions.