Tob. Sci., 1960, 4-19, p. 92-94, ISSN.0082-4623
Nine years' experience with the Nicotiana longiflora factor for resistance to Phytophthora parasitica var. nicotianae in the control of black shank
Kentucky Agricultural Experiment Station, Lexington, Kentucky USA
1. The section Alatae of Nicotiana contains 4 species that show high resistance to several field strains of Phytophthora parasitica var. nicotinae, N. repanda and N. nudicaulis in other sections also appeared resistant to these strains. 2. The...