Evaluation of Soybean Germplasms for Resistance to Phytophthora sojae

Phytophthora sojae is a soilborne oomycete pathogen that causes severe damages to susceptible soybean plants over the world and the management of this disease has been primarily relied on genetic resistance to P. sojae. It c an c ause pre- and post-emergence damping-off of soybean under wet and warm condition and can infect adult susceptible plants at later growth stages. In South Korea, Phytophthora root and stem rot (PRSR) has not been considered as a severe problem, while a few isolates of P. sojae were first reported 20 years ago. The incidence of PRSR is more frequently reported as cultivation of soybean in paddy fields increases recently. The objective of this study was to evaluate soybean germplasms that are resistant to P. sojae.