ISSN:
1615-6110
Keywords:
Angiosperms
;
Orchidaceae
;
Ophrys
;
Orchis
;
Anacamptis
;
Polyploidy
;
aneuploidy
;
karyology
;
systematics
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Studies on chromosome numbers and karyotypes in Orchid taxa from Apulia (Italy) revealed triploid complements inOphrys tenthredinifera andOrchis italica. InO. tenthredinifera there is no significant difference between the diploid and the triploid karyotypes. The tetraploid cytotype ofAnacamptis pyramidalis forms 36 bivalents during metaphase I in embryo sac mother cells. Aneuploidy was noticed inOphrys bertolonii ×O. tarentina with chromosome numbers n = 19 and 2n = 38. There were diploid (2n = 2x = 36), tetraploid (2n = 4x = 72), hexaploid (2n = 6x = 108) and octoploid (2n = 8x = 144) cells in the ovary wall of the diploid hybridOphrys apulica ×O. bombyliflora. Evolutionary trends inOphrys andOrchis chromosomes are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00937966
Permalink
