Tomato grafting onto Solanaceae genotypes to control bacterial wilt (Ralstonia solanacearum Smith 1896)

Abstract

The tomato cultivation in the Amazon is not feasible mainly due to the natural infestation of Ralstonia solanacearum in the soil. Preventive control through grafting has been one of the main alternatives to manage this problem. This study aimed to evaluate the compatibility of Solanaceae genotypes as rootstocks for 'Santa Clara' tomato, aiming to control the bacterial wilt. Five rootstocks were evaluated: cubiu; red jurubeba; jurubebão; commercial hybrid tomato rootstock Guardião; and 'Santa Clara' tomato (self-grafting). In the seedling phase, characteristics of rootstock survival rate and compatibility were evaluated; while, in the field, that happened for survival rate, compatibility and fruit yield. In the seedling phase, Guardião and red jurubeba showed the best performances. In the field, red jurubeba presented a low compatibility, although it obtained the best productive performance among the wild rootstocks. Guardião obtained the best compatibility and yield among the studied rootstocks. Grafting is a viable technique for tomato production under soil-borne disease conditions.

Fontes de resistência a Meloidogyne enterolobii de espécies silvestres de Solanum e híbridos interespecíficos

“…Pereira et al (2018) evaluated 22 accessions and found that 11 were resistant. For other Solanum species evaluated in this study, good compatibility for grafting with tomato was reported in Solanum paniculatum (Pereira et al, 2018), S. crinitum (Carvalho et al, 2020), and S. mammosum (Bletsos & Olympio, 2008), being this first species resistant to M. enterolobii according to Mattos et al (2011), and S. mammosum resistant to M. arenaria (González et al, 2010).…”

“…Solanum crinitum has also presented six among seven accessions with resistant response. This species is used in Brazil as a tomato rootstock to control bacterial wilt (Carvalho et al, 2020), but there was no information available about its resistance to M.…”