Linkage between Frl (Fusarium oxysporum f.sp. radicis-lycopersici resistance) and Tm-2 (tobacco mosaic virus resistance-2) loci in tomato (Lycopersicon esculentum)

• Published in: Annals of applied biology Vol. 130; no. 2; pp. 319 - 323
• Main Authors: VAKALOUNAKIS, D J, LATERROT, H., MORETTI, A., LIGOXIGAKIS, E K, SMARDAS, K.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.04.1997; Blackwell; Wiley
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; crown and root rot; Fundamental and applied biological sciences. Psychology; Fusarium oxysporum f.sp. radicis-lycopersici; Genetic linkage; Genetics and breeding of economic plants; Life Sciences; Lycopersicon esculentum; Pest resistance; Plant pathogens; TMV; tobacco mosaic; tobacco mosaic virus; tomato; Varietal selection. Specialized plant breeding, plant breeding aims; Genetic inheritance; Linkage; Plant pathogen; Tobamovirus; Genetic distance; Fungus resistance; Fungi; Virus; Microorganism resistance; Vegetable crop; Tobacco mosaic virus; Dicotyledones; Genetic improvement; Angiospermae; Lycopersicon esculentum; Spermatophyta; Fungi Imperfecti; Solanaceae; Locus; Pure line; Thallophyta
• ISSN: 0003-4746; 1744-7348
• DOI: 10.1111/j.1744-7348.1997.tb06835.x

Summary A study was carried out on the linkage relationship between the Frl locus carrying resistance to Fusarium oxysporum f.sp. radicis‐lycopersici and the Tm‐2 locus carrying resistance to several races of tobacco mosaic virus in the tomato inbred line IRB‐301‐31. The inbred line Motelle (Frl+/Frl+, Tm‐2+/Tm‐2+) was crossed with the inbred line IRB‐301‐31 (Frl/Frl, Tm‐2/Tm‐l). The resulting 222 F2 plants were selfed, and from each F3 family groups of 15–60 seedlings were tested for resistance to either F. oxysporum f.sp. radicis‐lycopersici or tobacco mosaic virus race 0. Segregation data indicated a very tight linkage between Frl and Tm‐2, equal to 5.1 ± 1.07 map units.