Cytology of Solanum nigrum L., S. retroflexum Dunn. and their hybrids
Received: 09 June 1980 Revised: 02 March 1981 DOI:
Cite this article as: Rao, G.R. & Kumar, A. Proceedings: Plant Sciences (1981) 90: 227. doi:10.1007/BF03053051 Abstract
Cytomorphological characters of
Solanum retroflexum and tetraploid S. nigrum, and their F 1 hybrids were studied. The hybrids were fertile with highly regular meiosis. It is concluded that the species are differentiated primarily by genetic factors. The origin of the two species from the same or identical ancestors is discussed. Keywords Solanum retroflexum S. nigrum (4x) interspecific hybrids cytology interrelationship References
Bhaduri P N 1933 Chromosome numbers of some solanaceous plants of Bengal;
J. Indian Bot. Soc.
Schilling E E Jr and Heiser C B Jr 1979 Crossing relationships among diploid species of the
complex in North America;
Am. J. Bot.
Stebbins G L Jr 1947 Types of polyploids: their classification and significance;
Stebbins G L Jr and Paddock E F 1949 The
Solanum nigrum complex in Pacific North America; Madroño 10 70–81
Stephens S G 1950 The internal mechanism of speciation in
CrossRef Copyright information
© Indian Academy of Sciences 1981