<abstract xmlns="http://www.w3.org/1999/xhtml"> Cucumber (Cucumis sativus L.) is widely cultivated in many parts of the world. Its production is significantly affected by Fusarium root and stem rot, which is caused by the fungus Fusarium oxysporum f. sp. radicis-cucumerinum, a major disease of cucumber in some regions. Most of the management programs for the control of Fusarium root and stem rot are not successful; therefore, growing resistant cultivars may be the best solution. Use of disease-resistant cultivars is a key to environmentally friendly and economically sustainable disease control in modern crop production. To find resistance sources, 10 F1 cucumber hybrids were screened against F. oxysporum f. sp. radicis-cucumerinum. Total phenolic content (PC), soluble peroxidase (POX), and polyphenol oxidase (PPO) activities were evaluated at 0, 4, and 8 days after inoculation. Significant differences were observed between resistant and susceptible genotypes in increase of total PCs and enzymatic activities at fourth day after inoculation. These findings can be used in breeding programs of cucumber aiming at creating F1 cultivars resistant to Fusarium root and stem rot.</abstract>

Cucumber (Cucumis sativus L.) is widely cultivated in many parts of the world. Its production is significantly affected by Fusarium root and stem rot, which is caused by the fungus Fusarium oxysporum f. sp. radicis-cucumerinum, a major disease of cucumber in some regions. Most of the management programs for the control of Fusarium root and stem rot are not successful; therefore, growing resistant cultivars may be the best solution. Use of disease-resistant cultivars is a key to environmentally friendly and economically sustainable disease control in modern crop production. To find resistance sources, 10 F1 cucumber hybrids were screened against F. oxysporum f. sp. radicis-cucumerinum. Total phenolic content (PC), soluble peroxidase (POX), and polyphenol oxidase (PPO) activities were evaluated at 0, 4, and 8 days after inoculation. Significant differences were observed between resistant and susceptible genotypes in increase of total PCs and enzymatic activities at fourth day after inoculation. These findings can be used in breeding programs of cucumber aiming at creating F1 cultivars resistant to Fusarium root and stem rot.

Evaluation of Resistance, Enzymatic Response, and Phenolic Compounds in Roots of F1 Cucumber Hybrids to Fusarium Oxysporum F. Sp. Radicis-Cucumerinum

Journal of Horticultural Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Evaluation of Resistance, Enzymatic Response, and Phenolic Compounds in Roots of F Cucumber Hybrids to Fusarium Oxysporum F. Sp. Radicis-Cucumerinum

Cucumber (Cucumis sativus L.) is widely cultivated in many parts of the world. Its production is significantly affected by Fusarium root and stem rot, which is...

Evaluation of Resistance, Enzymatic Response, and Phenolic Compounds in Roots of F₁ Cucumber Hybrids to Fusarium Oxysporum F. Sp. Radicis-Cucumerinum

Published Online: Jun 30, 2017

Page range: 117 - 124

Received: May 01, 2016

Accepted: Apr 01, 2017

DOI: https://doi.org/10.1515/johr-2017-0012

Keywords
Fusarium root and stem rot, cucumber, polyphenol oxidase, peroxidase, total phenolic

© by Seyed Hossein Nemati

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Evaluation of Resistance, Enzymatic Response, and Phenolic Compounds in Roots of F1 Cucumber Hybrids to Fusarium Oxysporum F. Sp. Radicis-Cucumerinum

Published Online: Jun 30, 2017

Page range: 117 - 124

Received: May 01, 2016

Accepted: Apr 01, 2017

DOI: https://doi.org/10.1515/johr-2017-0012

KeywordsFusarium root and stem rot, cucumber, polyphenol oxidase, peroxidase, total phenolic

© by Seyed Hossein Nemati

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Evaluation of Resistance, Enzymatic Response, and Phenolic Compounds in Roots of F₁ Cucumber Hybrids to Fusarium Oxysporum F. Sp. Radicis-Cucumerinum

Keywords
Fusarium root and stem rot, cucumber, polyphenol oxidase, peroxidase, total phenolic