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vi seminário sobre pragas, doenças e plantas daninhas do ... - IAC

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REAÇÃO DE CULTIVARES <strong>IAC</strong> DE FEIJOEIROS AO<br />

Cowpea mild mottle <strong>vi</strong>rus - CpMMV<br />

Julio M. Marubayashi ( 1 ); Valdir A. Yuki ( 2 ); Elaine B. Wutke ( 3 )<br />

RESUMO<br />

A ocorrência recente <strong>do</strong> Cowpea mild mottle vírus - CpMMV , de forma epidêmica em cultura de soja, em<br />

to<strong>do</strong> o Brasil, trouxe preocupações em relação às culturas de feijoeiro, pois, esse vírus causa a <strong>do</strong>ença<br />

conhecida como mosaico angular <strong>do</strong> feijoeiro Jalo. Por esse motivo realizou-se um experimento <strong>vi</strong>san<strong>do</strong><br />

determinar a reação de cultivares <strong>IAC</strong>. Onze cultivares foram plantadas em canteiros experimentais e<br />

inoculadas mecanicamente com o CpMMV. Todas as cultivares se infectaram com o vírus, e as cultivares<br />

<strong>IAC</strong> – Carioca Tybatã e <strong>IAC</strong> – Carioca Eté, mostraram-se bastante tolerantes e a cultivar Carioca, tolerante.<br />

A cultivar Jalo, conforme espera<strong>do</strong>, foi a mais suscetível. As demais cultivares testadas, <strong>IAC</strong> - Carioca<br />

Una, <strong>IAC</strong> - Bico de Ouro, <strong>IAC</strong> - Mara<strong>vi</strong>lha, <strong>IAC</strong> - Carioca Aruã, BT- 2 , <strong>IAC</strong> – Carioca S/H e <strong>IAC</strong> - Carioca<br />

Pyatã, comportaram-se de forma intermediária.<br />

Palavras-chave: vírus, controle, feijão, tolerância, Bemisia tabaci biótipo B.<br />

ABSTRACT<br />

REACTION OF <strong>IAC</strong> BEANS CULTIVARS TO Cowpea mild mottle <strong>vi</strong>rus – CpMMV. The recent outbreak<br />

of Cowpea mild mottle <strong>vi</strong>rus – CpMMV, in soybean crops in Brazil, and because this <strong>vi</strong>rus infect many<br />

cultivars of beans and causes a disease named bean angular mosaic of Jalo bean, eleven cultivars of<br />

bean was tested in experimental plot in the field, and inoculated mechanically with the CpMMV. All the<br />

cultivars were infected, and the cultivars: <strong>IAC</strong> – Carioca Tybatã and <strong>IAC</strong> – Carioca Eté showed most<br />

tolerant to <strong>vi</strong>rus, followed by cv. Carioca. How espected, the cv. Jalo was the most susceptible. The<br />

others cultivars: <strong>IAC</strong> – Carioca Una, <strong>IAC</strong> – Bico de Ouro, <strong>IAC</strong> – Mara<strong>vi</strong>lha, <strong>IAC</strong> – Carioca Aruã, BT - 2<br />

(Black Turtle –2), <strong>IAC</strong> – Carioca S/H and <strong>IAC</strong> – Carioca Pyatã, had intermediate beha<strong>vi</strong>or.<br />

Key words: <strong>vi</strong>rus, control, bean, tolerance, Bemisia tabaci biotype B.<br />

( 1 ) Eng. Agr o , Pós Graduan<strong>do</strong>, Tecnologia da Produção Agrícola, Instituto Agronômico de Campinas – <strong>IAC</strong>, Caixa Postal 28,<br />

13001-970 Campinas, SP. E-mail: julioiac@yahoo.com.br ;<br />

( 2 ) Pesquisa<strong>do</strong>r Científico, Centro de Pesquisa e Desenvol<strong>vi</strong>mento de Fitossanidade, <strong>IAC</strong>, Campinas, SP. E-mail: vayuki@iac.sp.gov.br<br />

( 3 ) Pesquisa<strong>do</strong>ra Científica, Centro de Grãos e Fibras, <strong>IAC</strong>, Campinas, SP. E-mail: ebwutke@iac.sp.gov.br<br />

Documentos, <strong>IAC</strong>, Campinas, 79, 2007<br />

247

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