[1] UNIV LANCASTER, DIV BIOL SCI, LANCASTER LA1 4YQ, ENGLAND
[2] UNIV SAO PAULO, DEPT GENET, BR-13400970 PIRACICABA, SP, BRAZIL
[3] UNIV ESTADUAL CAMPINAS, INST BIOL, DEPT GENET & EVOLUCAO, BR-13083970 CAMPINAS, SP, BRAZIL
[4] UNIV ESTADUAL CAMPINAS, CTR BIOL MOL & ENGN GENET, BR-13083970 CAMPINAS, SP, BRAZIL
[5] UNIV OXFORD, DEPT PLANT SCI, OXFORD OX1 3RB, ENGLAND