Effect of temperature on conidial germination and systemic infection of maize by Peronosclerospora species.

Peronosclerospora maydis form Java, Indonesia, and the maize strain of P. sorghi from Thailand, both apparently infective only to maize, and P. philippinensis from the Philippines had very broad optimum temperature ranges for germination (at least 10-30 C) and germ tube growth (18-30 C); they produced large numbers of conidia from 18 to 23 C (the optimum temperature for sporulation) in presence of dew for 5-6 h (...)