Ensaio de livre escolha para o Coleóptero Colaspis sp. em seis variedades de soja

Free choice test for Colaspis sp. in six soybean varieties

NOTAS

Ensaio de livre escolha para o Coleóptero Colaspis sp. em seis variedades de soja¹

Free choice test for Colaspis sp. in six soybean varieties

Daniel Rossetto^I; Violeta NagaiII, ²

^ISeção de Entomologia Fitotécnica, IAC

^IISeção de Técnica Experimental e Cálculo, Instituto Agronômico, IAC

SUMMARY

Six soybean (Glycine max (L.) Merrill) varieties, Santa-Rosa, Viçosa, Paraná, PT 227687, PI 229358 and PI 171451, were tested under greenhouse conditions in free choice type of test, for feeding preference of the leaf beetle Colaspis sp. (probably Colaspis occidentalis (L.)). Two types of tests were made, leveling or not artificially the plant heights, by placing bricks underneath the pots of the lower plants. It seems that plant height did not contribute to the differences observed among varieties. The average percentage of leaf areas eaten when the heights were leveled were 15.2; 11.7; 10.5; 6.9; 5.4 and 4.8 respectively for the above mentioned varieties. When the heights were natural the averages were 25.5; 19.3; 15.2; 7.6; 9.1 and 6.3 respectively.

Probably, the plant introduction PI 171451 may be used in Brazil as a source for resistance against the leaf beetle Colaspis sp.

Texto completo disponível apenas em PDF.

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Recebida para publicação a 31 de agosto de 1979.

1

Agradecimentos são devidos ao Dr. Carlos Jorge Rossetto e ao Eng.º Agr.º Jorge Alberto Marques Rezende pela colaboração prestada e também aos funcionários da Seção de Entomologia Fitotécnica, Aldo Fernandes, Archangelo Marion, Maria Inês Fonseca Jorge e Osvaldo Betti.

2

Com bolsa de suplementação do CNPq.

Datas de Publicação

• Publicação nesta coleção
  21 Dez 2007
• Data do Fascículo
  1980