This study involves an abnormality known as fasciation in the Oriental variety Ghiavourkőy of the Smyrna type. Fasciated plants may also be bifurcated, have bifid-tipped leaves, and also have some abnormal flowers, all flower parts being involved. ·Whether the tobacco stalks become fasciated or bifurcated depends upon whether the enlarged terminal or axillary meristems remain coherent or become separated as growth proceeds. Fasciation in the Oriental tobacco differs from that previously reported in Cuban cigar tobacco in expressivity and in penetrance. The genetical basis for the difference remains unknown.

(Full article published with kind permission from "Tobacco International")