Identification of families F2:3 of homozygous tomatoes resistant to Ralstonia pseudosolanacearum e Ralstonia solanacearum
Journal Title: Revista Verde de Agroecologia e Desenvolvimento Sustentável - Year 2018, Vol 13, Issue 3
Abstract
The objective of this work was to identify homozygous F2:3 tomato families resistant to Ralstonia pseudosolanacearum and Ralstonia solanacearum. Two experiments were carried out under greenhouse conditions at the Federal Rural University of Pernambuco, one for each pathogen. We evaluated 45 treatments composed of Yoshimatsu (resistant) and IPA-7 (susceptible) and 43 families F2:3 obtained from generation F2. Each treatment consisted of 16 plants. The incidence of bacterial wilt was evaluated by means of a descriptive scale of notes at 20 days after inoculation. The families were compared with the parents according to the frequency of plants obtained for each note. The chi-square test ( ) was obtained, obtaining the significance of each of the parents. For the species R. pseudosolanacearum three homozygous resistant families were identified: Family F2:3 # 04, Family F2:3 # 29 and Family F2:3 # 31. Regarding R. solanacearum species, two homozygous resistant families were identified: Family F2:3 # 41 and Family F2:3 # 42. These families indicate the possibility of new resistant strains that can be used in breeding programs.
Authors and Affiliations
Kleyton Danilo da Silva Costa, Ana Maria Maciel dos Santos, Paulo Ricardo dos Santos, Adriano Márcio Freire Silva, Eduardo Pereira de Sousa Neto, José Luiz Sandes de Carvalho Filho
Keywords
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- EP ID EP419001
- DOI 10.18378/rvads.v13i3.5442
- Views 87
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