Lizard's Tail and Little Turkish varieties vary considerably as to time for floral abscission, anatomy of the abscission zone, and the controlling chemical agents. When the two varieties are crossed, a homogeneous F1 generation is intermediate in anatomical characteristics and time required for abscission of unfertilized flowers. The F2 individuals are widely heterogeneous. External anatomy and time of abscission vary considerably and in some instances are unlike either parental type or the F1 offspring. Simple laws of genetics do not apply to the genetic effects upon floral abscission in these varieties. Multiple genes appear to be involved, as well as several instances of lack of dominance of individual genes.
Proceedings of the Iowa Academy of Science
©1961 Iowa Academy of Science, Inc.
Yager, Robert E.
"Genetic Effects in the Control of Floral Abscission in Nicotiana,"
Proceedings of the Iowa Academy of Science, 68(1), 95-99.
Available at: https://scholarworks.uni.edu/pias/vol68/iss1/13