R. Rodeva, B. Ivanova, Z. Stoyanova, D. Stefanov, S. Manеva
Septoria leaf spot caused by the fungus Septoria lycopersici is one of the most common and destructive diseases of tomato worldwide under conditions of high humidity. In Bulgaria an outbreak of the disease occurs in rainy years. The most of established resistance sources were of quantitative type. Four resistance components, i.e. incubation period, latent period, spot number and necrotic leaf area were quantified on 36 tomato accessions, including Bulgarian and foreign cultivars and lines. Significant differences were found between the accessions for all resistance components. Among the accessions expressing the highest resistance level were several lines derived from the three-genomic hybrid (Isogenic line gf - Lycopersicon chilense LA 460 – L. peruvianum var. humifusum PI 127829) and the wild species L. pimpinellifolium LA 0722. The accompanying effects of the disease on photosystem II and photosystem I activity were investigated on accessions expressing different level of disease resistance.
Rodeva, R., Ivanova, B., Stoyanova, Z., Stefanov, D. and Manеva, S. (2009). RESISTANCE COMPONENTS TO SEPTORIA LYCOPERSICI IN TOMATO. Acta Hortic. 808, 45-50
DOI: 10.17660/ActaHortic.2009.808.5
Septoria leaf spot, incubation period, latent period, spot number, necrotic leaf area, photosynthesis

Acta Horticulturae