Instituto Agronô
mico-APTA;
Campinas;
Brazil;
Hortec Sementes Ltda;
Braganç
a Paulista;
Brazil;
CNPq/PIBITI Scholarship Training;
Campinas;
Brazil;
Tomato; Yellow; Leaf; Curl; Virus; Zucchini; Yellow; Mosaic; Virus; Papaya; Ringspot; Virus; Strain; Watermelon; Lettuce; Mosaic; Virus; Jabras; Hybridization;