Factors influencing ELISA evaluation of transmission of pea seed-borne mosaic virus in infected pea seed : seed-group size and seed decortication Yves MAURY, Jean-Marie BOSSENNEC, Geneviève BOUDAZIN, Richard HAMPTON, Gerhart PIETERSEN and James MAGUIREAgronomie, 7 4 (1987) 225-230DOI: https://doi.org/10.1051/agro:19870402