Nicotiana excelsior Black as a source of cytoplasmic male sterility in Nicotiana tabacum L

Nikova, V.M.

Comptes Rendus de l' Academie Bulgare des Sciences 39(6): 105-107


ISSN/ISBN: 1310-1331
Accession: 001642971

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In greenhouse and field studies of F1 and BC1 plants of N. excelsior X N. tabacum, 4 types of changes in the stamens were noted: (1) absence of stamens, (2) shortened stamens, (3) transformation of the stamens into styles with secondary stigmas and (4) very thin (filiform) stamens. On the basis of these changes and combinations of them, 7 types of floral changes were distinguished. The F1 hybrids were generally cytoplasmically male sterile, though some pollen was formed in anthers of type 2, and this sterility was maintained in the BC1 to N. tabacum.