Compatibility of tomato cultivar Santa Cruz Kada grafted on different Solanaceae species and control of bacterial wilt

Abstract

The objective of this work was to evaluate the compatibility, gas exchange and yield of tomato cultivar Santa Cruz Kada, susceptible to bacterial wilt (Ralstonia solanacearum) when grafted on different Solanaceae species. Rootstock sources were the mini-tomato RVTC-66, Cayenne pepper, Jerusalem cherry (Solanum pseudocapsicum), sticky nightshade (Solanum sisymbriifolium), and cultivar Santa Cruz Kada itself (self-grafting). Two materials were tested to promote the union between rootstocks and scions: grafting clips and biodegradable tape (Parafilm). Grafting success index (GSI) was evaluated and, for treatments using biodegradable tape, grafting incompatibility, gas exchange, agronomic characteristics and bacterial wilt epidemiology were assessed throughout the cycle. The use of biodegradable tape favored graft healing. Cayenne pepper, Jerusalem cherry, and sticky nightshade should not be employed as rootstocks for scions of tomato cultivar Santa Cruz Kada. The mini-tomato accession RVTC-66 showed low graft incompatibility, high photosynthetic efficiency and, when compared to self-grafting, the same fruit production, but with higher plant health index concerning the bacterial wilt.

Grafting Compatibility, Scion Growth, and Fusarium Wilt Disease Incidence of Intraspecific Grafted Tomato

“…Successful grafting and graft-inducing plant behavior can depend on the interaction and the level of compatibility between the scion and the rootstock, which may or may not form a graft union (Tedesco et al 2022). Our study showed 100% successful graft compatibility in both self-grafted and heterografted tomatoes, similar to the Zeist et al (2018) report. The above authors reported that the intraspecific and self-grafts showed high compatibility, resulting in a high photosynthetic efficiency compared to grafting with other Solanum species.…”

“…Grafting compatibility was evaluated by measuring the diameter of the grafting point (GP), the scion (SC), and the rootstock (RS) at 1 cm above and below the grafting point using the formula (Zeist et al 2018)…”

“…Successful grafting and graft-enhancing plant performance depend on the interaction and the level of compatibility between scion and rootstock, which may affect the formation of the graft union (Tedesco et al 2022). Rootstock and scion that are genetically related will have increased graft success (Pina & Errea 2005;Zeist et al 2018;Li et al 2021).…”

Impact of wild solanaceae rootstocks on morphological and physiological response, yield, and fruit quality of tomato (Solanum lycopersicum L.) grown under deficit irrigation conditions

“…In addition, root growth and vigor, as well as N, P, K, Ca, and Mg concentration of scion grafted on drought-tolerant tomato rootstock ('606', T) was significantly higher compared to those grafted with susceptible seedlings ('112', S) [ 23 ]. Grafting has proven to be an effective strategy to improve tolerance to stress factors; therefore, wild Solanaceae, a source of high genetic variability, could be used as rootstock to promote the development of plants resilient to different stress factors [ [26] , [27] , [28] ].…”

Crescimento e produtividade de cultivares de tomate cereja utilizando substratos de base ecológica

“…Considerando as informações supracitadas, objetivou-se avaliar a influência de substratos alternativos no crescimento e produtividade das cultivares de tomateiro cereja Cascade e Samambaia em ambiente protegido. A condução das plantas foi realizada por meio de haste vertical, conforme procedido por Zeist et al, (2018). Os vasos foram distribuídos em espaçamento de 50 x 40 cm.…”