1. Adams AC, Lusso MF, Pramod S, Xu D (2016) Compositions and methods for producing tobacco plants and products having altered alkaloid levels. United States Patent Application 20160374387A1
2. Allard HA (1919) Gigantism in Nicotiana tabacum and its alternate inheritance. Am Nat 53:218–233
3. Aoki S, Ito M (2000) Molecular phylogeny of Nicotiana (Solanaceae) based on the nucleotide sequence of the matK gene. Plant Biol 2:316–324
4. Apple JL (1962) Transfer of resistance to black shank (Phytophthora parasitica var. nicotianae) from Nicotiana plumbaginifolia to N. tabacum. Phytopath 52:1. (Abstr)
5. Aycock MK, Mann TJ, Matzinger DF (1963) Investigations with a form of cytoplasmic male-sterility in flue-cured tobacco. Tob Sci 7:130–135