Tob. Sci., 1957, 1-22, p. 99-102, ISSN.0082-4623
Some growth requirements in genus Nicotiana
Crops Research Division, Agricultural Research Services, United States Department of Agriculture USA
As already noted, species of the genus Nicotiana are frequently native to arid regions of often considerable elevation where days are hot and nights cool, and moisture not too plentiful. The degree to which they have become adjusted to these...