Groundnut rust—its survival and carry-over in India
1982
Subrahmanyam, P | McDonald, D
Groundnut rust has become an important disease in India, particularly in the South, probably because of extensive and continuous cultivation of the crop. Uredospores present on crop debris in the field, and on pods or seeds in storage at ambient temperatures, lost viability within 6 weeks. They retained viability for long periods when stored at −16° C. Neither teliospores nor any collateral or alternate hosts were found. Seeds heavily contaminated with viable uredospores and sown in sterile soil gave rise to disease-free seedlings. There should be no risk of spread of rust from properly treated seed samples.
显示更多 [+] 显示较少 [-]