resistência de soja a insetos: v. preferência para alimentação de adultos de diphaulaca viridipennis clark, 1865, em cultivares e linhagens resistance of soybean to insects: v. feeding preference of diphaulaca viridipennis clark, 1865, adults among soybean genotypes

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ID: 150289
1986
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Abstract
Durante o ano agrícola 1983/84, em condições de casa de vegetação, estudou-se em quatro experimentos a preferência para alimentação de adultos de Diphaulaca viridipennis Clark, 1865, em dois cultivares e nove linhagens de soja. Três experimentos constituíram-se em testes tipo livre chance de escolha: no primeiro, a linhagem PI 227687 apresentou perda de área foliar menor que os demais tratamentos ('Santa Rosa', 'IAC-8', PI 171451 e PI 229358). No segundo e no terceiro experimento, em que se manteve PI 227687 e 'Santa Rosa' como, respectivamente, padrão de resistência e suscetibilidade, as linhagens comparadas (PI 274453, IAC 78-2318, IAC 79-1823, IAC 80-1177, IAC 80-596-2 e D 72-9601-1) exibiram danos foliares intermediários entre esses padrões. O quarto experimento constou de um teste sem chance de escolha envolvendo o tratamento menos danificado nos três experimentos iniciais, PI 227687, e o mais suscetível, 'Santa Rosa'; as porcentagens médias de área foliar comida não diferiram entre os dois materiais, indicando que a resistência observada na linhagem PI 227687 não se mantém sob condições de obrigatoriedade de alimentação por adultos de D. viridipennis.
The feeding preference of Diphaulaca viridipennis Clark, 1865, (Coleoptera: Chrysomelidae) was studied in eleven soybean genotypes, in four experiments under greenhouse conditions at Campinas, State of São Paulo, Brazil, during the summer of 1983/84. Three free-choice-type experiments were carried out. In the first, the plant introduction PI 227687 was less defoliated by D. viridipennis than the other genotypes: 'IAC 8', PI 171451, PI 229358 and 'Santa Rosa'; the latter was the most damaged. In the second and third experiments, PI 227687 and 'Santa Rosa' were utilized as resistant and susceptible checks respectively; the other six genotypes studied (PI 274453, IAC 78-2318, IAC 79-1823, IAC 80-1177, IAC 80-596-2 and D 72-9601-1) presented intermediate performance between the checks. A non-choice-type experiment was set up with the two checks, PI 227687 and 'Santa Rosa'; the percentage of leaf area eaten in both treatments was similar, indicating that the PI 227687 resistance to D. viridipennis disappears when there is obligatoriness in feeding conditions.
Reference Key
loureno1986bragantiaresistncia Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors André Luiz Lourenção, Manoel Albino Coelho de Miranda
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Journal revista espanola de salud publica
Year 1986
DOI
10.1590/S0006-87051986000100005
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051986000100005
Keywords
soybean

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