Screening of soybean germplasm for resistance to damping-off caused by Pythium ultimum

摘要

Hundred soybean germplasm lines were screened for resistance against Pythium ultimum Trow. Results showed that out of one hundred germplasm lines only eight entries viz., MAUS-102, JS-98-2. Kalitur, Himso-1587, MAUS-47. MAUS-71, MAUS-158 and MAUS-162have expressed resistance towards pre-emergence damping-off disease. Also, in post-emergence mortality studies, the resistance were classified into 5 categories on the basis of seedling rot percentage i.e., resistant (8), moderately resistant (8), moderately susceptible (7), susceptible (16) and highly susceptible (61). This resistance grading can further be utilized to understand the resistance mechanism in soybean germplasm as well as in soybean breeding evaluation program.