ISSN:
1618-0860
Schlagwort(e):
Leguminosae
;
Morphology
;
Stigma
;
Style
;
Vicia
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Abstract The morphology and development of styles and stigmas ofVicia, one of the five genera of tribe Vicieae, were studied by scanning electron microscopy to contribute to a revision of infrageneric classification. Among the 22 species examined, variations were found as to: (1) whether a boundary between stigma and style is V-shaped when viewed from the adaxial side or not; (2) whether stylar hairs sprout on all sides of the style or only on the abaxial side; (3) whether a hairy area of the style connects with the stigma area first at lateral sides or at an adaxial side; (4) whether styles are tapered or bottle-neck-shaped; (5) whether styles are straight or bend abaxially. Based on these variations, five morphological types of styles and stigmas were provided with a diagnostic key. Comparisons with related tribes Cicereae, Coronilleae, Galegeae, Hedysareae, Loteae and Trifolieae as possible outgroups suggested that the V-shaped boundary between stigma and style is a synapomorphy of some species withinVicia, and that a dorsally compressed and abaxially tufted style, which was distributed in separate subgenera and sections sensu Kupicha but is now known to occur together with the V-shaped boundary, has evolved only one time in the genus, rather than more than once as supposed earlier.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02344301
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