Pinho, Édila V. de R.V. et al. 1997. Use of morphological characteristics for genetic purity evaluation of hybrid corn seed. Pesquisa Agropecuaria Brasileira. 32, 9 (Sep. 1997), 941–949. DOI:https://doi.org/10.1590/S1678-3921.pab1997.v32.4730.