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      INFLUENCE OF ROOTSTOCKS ON Fusarium WILT, NEMATODE INFESTATION, YIELD AND FRUIT QUALITY IN WATERMELON PRODUCTION Translated title: Influência de porta-enxertos sobre a murcha de Fusarium, infestação de nematóides, rendimento e qualidade de frutos na produção de melancia

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          Abstract

          Cucurbita maxima x Cucurbita moschata rootstock are used to prevent infection with Fusarium oxysporum f. sp. niveum in watermelon production; however, this rootstock is not effective against nematode attack. Because of their vigor, the grafted plants can be planted at lower plant densities than the non-grafted plants. The tolerance to Fusarium oxysporum f. sp. niveum and Meloidogyne incognita was assessed in watermelon plants grafted onto a hybrid of Citrullus lanatus cv Robusta or the Cucurbita maxima x Cucurbita moschata cv Super Shintoza rootstocks. The densities of plants were 2083 and 4166 plants ha-1. Non-grafted watermelons were the controls. The Crunchy Red and Sangría watermelon cultivars were used as the scions, it the latter as a pollinator. The experiments were performed for two production cycles in soils infested with Fusarium oxysporum f. sp. niveum and Meloidogyne incognita. The incidence of Fusarium oxysporum f. sp. niveum was significantly greater in the non-grafted than in the grafted plants. The grafted plants presented similar resistance to Fusarium regardless of the rootstock. The root-knot galling index for Meloidogyne incognita was significantly lower in plants grafted onto Citrullus lanatus cv Robusta than onto the other rootstock. The yields of plants grafted onto Citrullus lanatus cv Robusta grown at both plant densities were significantly higher than in the other treatments.

          Translated abstract

          A enxertia de Cucurbita maxima x Cucurbita moschata tem sido usada para prevenir problemas com Fusarium oxysporum f. sp. niveum na produção de melancia embora não seja efetivo contra ataque de nematóides. Em razão de seu vigor, plantas enxertadas podem ser plantadas em densidade mais baixa do que as plantas não enxertadas. A tolerância a Fusarium oxysporum f. sp. niveum e Meloidogyne incognita foi avaliada em plantas de melancia enxertadas em híbridos de Citrullus lanatus cv Robusta e em Cucurbita maxima x Cucurbita moschata cv Super Shintoza. Foram usadas densidades de plantas de 2.083 e 4.166 plantas ha-1. Como testemunhas usou-se plantas não enxertadas. Os cultivares de melancia Crocantes vermelhas e Sangria foram usados como polinizador. O experimento foi realizado em dois ciclos, sendo instalado em solo infestado com Fusarium oxysporum f. sp. niveum e Meloidogyne incognita. A incidência de Fusarium oxysporum f. sp. niveum foi, significativamente, maior em plantas não enxertadas. Plantas enxertadas apresentaram resistência semelhante ao Fusarium independentemente do porta-enxerto. O índice de galhas de Meloidogyne incognita foi significativamente menor em plantas enxertadas em Citrullus lanatus cv Robusta. As maiores diferenças significativas em relação aos demais tratamentos foram observadas em ambas as densidades de plantas enxertadas pela produtividade das plantas enxertadas em Citrullus lanatus cv Robusta.

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          Most cited references20

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          Grafting as a tool to improve tolerance of vegetables to abiotic stresses: Thermal stress, water stress and organic pollutants

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            SAS/STAT® User's Guide

            NC Cary (2000)
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              New grafting methods for fruit-bearing vegetables in Japan

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cagro
                Ciência e Agrotecnologia
                Ciênc. agrotec.
                Editora da Universidade Federal de Lavras (Lavras )
                1981-1829
                August 2015
                : 39
                : 4
                : 323-330
                Affiliations
                [1 ] Instituto Tecnológico de Roque Mexico
                [2 ] Instituto Tecnológico de Roque Mexico
                [3 ] Instituto Tecnológico de Colima Mexico
                [4 ] IE University Spain
                Article
                S1413-70542015000400323
                10.1590/S1413-70542015000400002
                fe7c0652-a25d-4887-aaad-96adf929c81b

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1413-7054&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                root-knot nematodes,Citrullus lanatus,enxertia,triplóides,Fusarium oxysporum,nematóides das galhas,grafting,triploid

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