Bonilha, I. Gioria, R. Kobori, R.F. Della Vecchia, P.T. Piedade, S.M. de S. Rezende, J.A.M. <br/><br/>
Yield of varieties of Cucurbita pepo preimmunized with mild strains of papaya ringspot virus - type W and zucchini yellow mosaic virus 

<br/><br/><label>Subjects--Topical Terms: </label><br/>CUCURBITACEAE<br/>VIRUS<br/>MOSAICO<br/>ESTIRPE