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Evaluation of tomato rootstocks resistant to the fungal wilt disease caused by Fusarium oxysporum f. sp. lycopersici

Evaluation of tomato rootstocks resistant to the fungal wilt disease caused by Fusarium oxysporum... Fusarium oxysporum f. sp. lycopersici (FOL) is one of the most destructive diseases of tomatoes in Iran, causing severe yield losses and quality reduction. However, not many studies have been conducted to explore the use of resistant rootstocks for managing this disease and minimizing production losses in the region. In this study the level of resistance of multiple tomato cultivars and lines were evaluated against FOL. The most FOL-resistant cultivars were then selected as possible rootstocks and two resistant scions were grafted onto them. FOL was inoculated and the resistance of grafted plants was assessed using several indices, including disease incidence (DI), disease severity (DS), and area under the disease progress curve (AUDPC). In addition, stem length and diameter of the grafted samples were measured. Out of 29 lines and cultivars, only nine, including, Koper, 1616, TOM5, IR.SR3, 1626, 1631, IR.SA1 and the resistant Maxifort and Beaufort check cultivars, found to be the most resistant against FOL and were subsequently used for rootstocks. Koper and 1616 rootstocks exhibited the lowest percentages of AUDPC, DS and DI compared to the grafted plants as well as the susceptible and two resistant checks. They also exhibited relatively greater stem length and diameter. The results in this study suggest the potential of resistant rootstocks in preventing disease progression, which also provide possibilities for control of wilt disease and low-input sustainable horticulture in the region. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Evaluation of tomato rootstocks resistant to the fungal wilt disease caused by Fusarium oxysporum f. sp. lycopersici

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Publisher
Springer Journals
Copyright
Copyright © The Author(s) under exclusive licence to Australasian Plant Pathology Society Inc. 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1007/s13313-023-00910-2
Publisher site
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Abstract

Fusarium oxysporum f. sp. lycopersici (FOL) is one of the most destructive diseases of tomatoes in Iran, causing severe yield losses and quality reduction. However, not many studies have been conducted to explore the use of resistant rootstocks for managing this disease and minimizing production losses in the region. In this study the level of resistance of multiple tomato cultivars and lines were evaluated against FOL. The most FOL-resistant cultivars were then selected as possible rootstocks and two resistant scions were grafted onto them. FOL was inoculated and the resistance of grafted plants was assessed using several indices, including disease incidence (DI), disease severity (DS), and area under the disease progress curve (AUDPC). In addition, stem length and diameter of the grafted samples were measured. Out of 29 lines and cultivars, only nine, including, Koper, 1616, TOM5, IR.SR3, 1626, 1631, IR.SA1 and the resistant Maxifort and Beaufort check cultivars, found to be the most resistant against FOL and were subsequently used for rootstocks. Koper and 1616 rootstocks exhibited the lowest percentages of AUDPC, DS and DI compared to the grafted plants as well as the susceptible and two resistant checks. They also exhibited relatively greater stem length and diameter. The results in this study suggest the potential of resistant rootstocks in preventing disease progression, which also provide possibilities for control of wilt disease and low-input sustainable horticulture in the region.

Journal

Australasian Plant Pathology – Springer Journals

Published: May 1, 2023

Keywords: Tomato; Fusarium oxysporum; Grafting; Resistance; Rootstock

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