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    <subfield code="b">eng</subfield>
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    <subfield code="a">Correia, Giliard S </subfield>
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    <subfield code="a"> Araujo Filho, Jeronimo V de</subfield>
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    <subfield code="a">Silva,  Wellington R da </subfield>
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    <subfield code="a">Moccellin, Renata </subfield>
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    <subfield code="a">Resende, Francisco V </subfield>
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    <subfield code="a">Pinheiro, Jadir B </subfield>
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    <subfield code="a">Grinberg, Patr&#xED;cia da S </subfield>
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    <subfield code="a">Gomes, Cesar B </subfield>
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    <subfield code="a">Reaction of garlic genotypes to Ditylenchus dipsaci and aspects related to productivity in a naturally infested area</subfield>
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Publica&#xE7;&#xE3;o online; 19 ref.; 5 tables; Summaries (En, Pt)</subfield>
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ABSTRACT:    The stem and bulb nematode, Ditylenchus dipsaci, is one of the main problems which affects garlic crop in Brazil; however, information on the host status of the crop to the pathogen is scarce. Thus, the aim of this study was to evaluate the host status of 11 garlic genotypes to Ditylenchus dipsaci and their productivity in experiments conducted under controlled conditions and in the field. In a greenhouse, diverse genetic materials were evaluated for nematode reproduction factor (RF). At the same time, the nematode reproduction, damage caused and productivity of these same genotypes were evaluated in an area naturally infested. In the greenhouse, &#x2018;AM-PC Farias&#x2019;, &#x2018;Quit&#xE9;ria&#x2019;, &#x2018;BRS Hozan&#x2019;, &#x2018;Peruano&#x2019;, &#x2018;Chonan&#x2019; and &#x2018;Moz 114&#x2019; were resistant; and, under field conditions, in these same genotypes, the nematode showed the lowest rates of reproduction in the soil (RF= 0.2 to 10.77) and in the tissues (1 to 3,893 specimens/plant), and there were the lowest percentages of symptomatic (0 to 48.66%) and dead (4.17 to 19.57%) plants. Higher productivities (4.32 to 11.05 t/ha) and bulb weight (13.12 to 58.63 g) were obtained with &#x2018;AM-PC Farias&#x2019;, &#x2018;Quit&#xE9;ria&#x2019; and &#x2018;AM-Erenice&#x2019;; however, only in &#x2018;AM-PC Farias&#x2019; and in &#x2018;BRS Hozan&#x2019; we observed lower population levels of D. dipsaci in bulb peels (110 and 0.1 specimens/g, respectively). 


Keywords:     Allium spp., resistance, nematodes, damage.</subfield>
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RESUMO:    O nematoide-do-amarel&#xE3;o-do-alho &#xE9; um dos principais problemas que afeta a cultura no Brasil, no entanto, informa&#xE7;&#xF5;es sobre a resist&#xEA;ncia da cultura ao pat&#xF3;geno s&#xE3;o escassas. Assim, foi objetivo deste estudo avaliar a rea&#xE7;&#xE3;o de 11 gen&#xF3;tipos de alho a Ditylenchus dipsaci e sua produtividade em experimentos conduzidos sob condi&#xE7;&#xF5;es controladas e de campo. Em casa de vegeta&#xE7;&#xE3;o, os diferentes materiais gen&#xE9;ticos foram avaliados quanto ao fator de reprodu&#xE7;&#xE3;o (FR) do nematoide. Paralelamente, avaliou-se, em &#xE1;rea com solo naturalmente infestado, a reprodu&#xE7;&#xE3;o do nematoide, os danos causados e a produtividades desses mesmos gen&#xF3;tipos. Em casa de vegeta&#xE7;&#xE3;o, &#x2018;AM-PC Farias&#x2019;, &#x2018;Quit&#xE9;ria&#x2019;, &#x2018;BRS Hozan&#x2019;, &#x2018;Peruano&#x2019;, &#x2018;Chonan&#x2019; e &#x2018;Moz 114&#x2019; foram resistentes e, em condi&#xE7;&#xF5;es de campo, nesses mesmos gen&#xF3;tipos, o nematoide apresentou as menores taxas de reprodu&#xE7;&#xE3;o no solo (FR= 0,2 a 10,77) e nos tecidos (1 a 3.893 esp&#xE9;cimes/planta), menores percentagens de plantas sintom&#xE1;ticas (0 a 48,66%) e mortas (4,17 a 19,57%). Maiores produtividades (4,32 a 11,05 t/ha) e peso de bulbos (13,12 a 58,63 g) foram obtidos com &#x2018;AM-PC Farias&#x2019;, &#x2018;Quit&#xE9;ria&#x2019; e &#x2018;AM-Erenice&#x2019;, por&#xE9;m, apenas no primeiro e em &#x2018;BRS Hozan&#x2019;, foram observados baixos n&#xED;veis populacionais de D. dipsaci nas cascas dos bulbos (110 e 0,1 esp&#xE9;cimes/g, respectivamente).



Palavras-chave:     Allium spp., resist&#xEA;ncia, nematoides, danos</subfield>
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    <subfield code="a">ALHO</subfield>
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    <subfield code="a">VARIEDADE RESISTENTE</subfield>
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    <subfield code="a">GEN&#xD3;TIPO</subfield>
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    <subfield code="a">PRAGA DE PLANTA</subfield>
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    <subfield code="a">NEMATOIDE</subfield>
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    <subfield code="a">DANO</subfield>
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    <subfield code="a">DEFESA VEGETAL</subfield>
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    <subfield code="0">1047</subfield>
    <subfield code="9">357921</subfield>
    <subfield code="d">Bras&#xED;lia-DF Sociedade de Olericultura do Brasil 1983</subfield>
    <subfield code="o">2025-5886</subfield>
    <subfield code="t">Horticultura Brasileira (Brazil)</subfield>
    <subfield code="x">0102-0536</subfield>
    <subfield code="g">v. 40(4) p. 451-456; (2022)</subfield>
    <subfield code="w">BR2025002445</subfield>
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    <subfield code="u">https://www.scielo.br/j/hb/a/BxbgNkwDHwCgDN9HPhbBfbt/?format=pdf&amp;lang=en</subfield>
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    <subfield code="c">ANA</subfield>
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    <subfield code="c">338414</subfield>
    <subfield code="d">338414</subfield>
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