Inheritance of resistance to Ralstonia pseudosolanacearum in tomato

• Published in: Euphytica Vol. 214; no. 8; pp. 1 - 11
• Main Authors: da Silva Costa, Kleyton Danilo, dos Santos, Ana Maria Maciel, dos Santos, Paulo Ricardo, Nascimento, Maxwel Rodrigues, Silva, Adriano Márcio Freire, Albuquerque, Greecy Mirian Rodrigues, Batista, Renata Oliveira, de Lima Pereira, Jacqueline Wanessa, de Carvalho Filho, José Luiz Sandes
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-08-2018; Springer; Springer Nature B.V
• Subjects: Biomedical and Life Sciences; Biotechnology; Cultivars; Disease resistance; Heredity; Inheritances; Inoculation; Life Sciences; Medical research; Medicine, Experimental; Parents; Plant Genetics and Genomics; Plant Pathology; Plant Physiology; Plant Sciences; Tomatoes; Wilt; Genetic control; Breeding; Bacterial wilt
• ISSN: 0014-2336; 1573-5060
• DOI: 10.1007/s10681-018-2217-0

Bacterial wilt is a disease causing great losses to the tomato crop. Research investigating inheritance of resistance to this disease helps to improve the efficiency of breeding programs in the development of resistant cultivars. The objective of this study was to determine the inheritance of resistance to
Ralstonia pseudosolanacearum
in tomato plants. The parents Yoshimatsu and IPA-7; generations F
1
, F
2
, BC
11
, and BC
21
; and 43 F
2:3
progenies were evaluated. The severity of bacterial wilt were assessed through a descriptive scale of scores at 10 and 20 days after inoculation. Inheritance of resistance to
R. pseudosolanacearum
in tomato involves two major genes with segregation independent of additive effects only, plus polygenes with additive and dominance effects wherein resistance is associated with recessive alleles. Selection of plants resistant to
R. pseudosolanacearum
is indicated mainly at 20 days after inoculation.