<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Root-knot nematodes (RKN) cause considerable economic losses to kiwifruit production annually. Screening of resistant cultivars has been one of the long-standing methods to manage root-knot nematodes. Here, the reaction of the four most common commercial cultivars of kiwifruit, namely, <italic>Actinidia chinensis</italic> var. <italic>deliciosa</italic> cv. Hayward, <italic>A. chinensis</italic> var. <italic>deliciosa</italic> cv. Abbott, <italic>A. chinensis</italic> var. <italic>deliciosa</italic> cv. Bruno, and <italic>A. chinensis</italic> var. <italic>chinensis</italic> cv. Haegeum (commonly known as ‘Golden’ kiwifruit) to infection by the RKN, <italic>Meloidogyne incognita</italic>, was evaluated. Among examined cultivars ‘Golden’ was the most susceptible, having on average 52.8 galls, 56.1 egg masses per gram of root, and 642 J2 population per 200 gram of soil. ‘Bruno’ showed the highest resistance, with 3.3 galls, 4.1 egg masses per gram of root, and 79 J2 in 200 g of soil. Then, two potential biological control agents, namely <italic>Priestia megaterium</italic> 31.en and <italic>Agrobacterium tumefaciens</italic> 19.en were used on ‘Hayward’ seedlings against <italic>M. incognita</italic> and showed a significant reduction in the number of galls and egg masses on roots, juvenile population in the soil, and increased the growth parameters of the plants compared to non-treated seedlings. We demonstrated that integrated management using resistant cultivars and biological control can provide a safe and economic method to control RKN, and these resistant cultivars can be used in breeding programs.</p>
</abstract>

Root-knot nematodes (RKN) cause considerable economic losses to kiwifruit production annually. Screening of resistant cultivars has been one of the long-standing methods to manage root-knot nematodes. Here, the reaction of the four most common commercial cultivars of kiwifruit, namely, Actinidia chinensis var. deliciosa cv. Hayward, A. chinensis var. deliciosa cv. Abbott, A. chinensis var. deliciosa cv. Bruno, and A. chinensis var. chinensis cv. Haegeum (commonly known as ‘Golden’ kiwifruit) to infection by the RKN, Meloidogyne incognita, was evaluated. Among examined cultivars ‘Golden’ was the most susceptible, having on average 52.8 galls, 56.1 egg masses per gram of root, and 642 J2 population per 200 gram of soil. ‘Bruno’ showed the highest resistance, with 3.3 galls, 4.1 egg masses per gram of root, and 79 J2 in 200 g of soil. Then, two potential biological control agents, namely Priestia megaterium 31.en and Agrobacterium tumefaciens 19.en were used on ‘Hayward’ seedlings against M. incognita and showed a significant reduction in the number of galls and egg masses on roots, juvenile population in the soil, and increased the growth parameters of the plants compared to non-treated seedlings. We demonstrated that integrated management using resistant cultivars and biological control can provide a safe and economic method to control RKN, and these resistant cultivars can be used in breeding programs.

Reaction of Commercial Cultivars of Kiwifruit to Infection by Root-knot Nematode and Its Biocontrol Using Endophytic Bacteria

Plant Protection Department, Faculty of Agricultural Sciences

Horticultural Science Research Institute, Citrus and Subtropical Fruits Research Center

Plant Protection Department, Agriculture Faculty

Department of Plant Pathology, Faculty of Agriculture

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Root-knot nematodes (RKN) cause considerable economic losses to kiwifruit production annually. Screening of resistant cultivars has been one of the...

Reaction of Commercial Cultivars of Kiwifruit to Infection by Root-knot Nematode and Its Biocontrol Using Endophytic Bacteria

Article Category: Research Paper

Published Online: Jun 05, 2023

Page range: -

Received: Feb 13, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0020

Keywords
cultivars, endophytic bacteria, kiwifruit, root-knot nematode

© 2023 Seyedeh Najmeh Banihashemian et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Reaction of Commercial Cultivars of Kiwifruit to Infection by Root-knot Nematode and Its Biocontrol Using Endophytic Bacteria

Article Category: Research Paper

Published Online: Jun 05, 2023

Page range: -

Received: Feb 13, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0020

Keywordscultivars, endophytic bacteria, kiwifruit, root-knot nematode

© 2023 Seyedeh Najmeh Banihashemian et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
cultivars, endophytic bacteria, kiwifruit, root-knot nematode