Tob. Sci., 1969, 13-12, p. 30-37, ISSN.0082-4623
The study of resistance to the black root rot disease of tobacco
Formerly Director of Research, American Sumatra Tobacco Corp., USA
The species N. tabacum originated in northeastern South America, and extensive collections of native tobacco types were made through Mexico, Central and South America in 1934·1935. Very little resistance to black root rot (Thielaviopsis) was found in...