V.K. GUPTA, I.M. SHARMA and. Physiology of apple rootstock susceptibility to Pythium ultimum. Indian Phytopathology, India, v. 45, n. 4, p. 439–443, 2002. Disponível em: https://epubs.icar.org.in/index.php/IPPJ/article/view/21735. Acesso em: 25 jun. 2026.