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  Origin of Crocus sativus (Iridaceae): inter- and intraspecific variation, population structure and hybridization compatibility within Series Crocus
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Ophav

 Ophav:
Larsen, Bjarne1, Forfatter
Ørgaard, Marian1, Vejleder
Pedersen, Carsten1, Vejleder
Tilknytninger:
1Det Biovidenskabelige Fakultet, København, Danmark
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 Abstract: The origin of the cultivated, triploid Crocus sativus is an ancient riddle. Though its origin has been studied far back it is still unknown whether C. sativus originated by autopolyploidy or allopolyploidy. It probably originated from a diploid species, most likely C. cartwrightianus, though also C. hadriaticus and other species of series Crocus are probable ancestors. C. cartwrightianus and C. hadriaticus have been studied in wild population of Greece and information on population structures, ecological parameters, growth strategies and morphological variation have been collected along with herbarium specimens, living plant material and 250 DNA-samples. The DNA-samples of C. cartwrightianus and C. hadriaticus were combined with samples from altogether nine species of Series Crocus in a microsatellite study, where the taxonomic position of the ornamental cultivar C. cartwrightianus ‘Albus’ also was considered. Hybridization compatibility between species of Series Crocus was examined making 88 crossings. The results indicate that essentially all species of Series Crocus can be hybridized. Considerable genetic resources were found which should be applied in order to genetically improve C. sativus. Here, field studies, crossing experiments and molecular work are combined with a literature study. The variation found here emphasizes the difficulties in identifying parental species of C. sativus, though the findings may provide a deeper insight in the complicated speciation of Crocus.
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Offentlig
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application/pdf / 35MB
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Basal

Bogmærk denne post: https://diskurs.kb.dk/item/diskurs:31462:1
 Type: Speciale
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Detaljer

Sprog: English - eng
 Datoer: 2011
 Sider: 130 pages
 Publiceringsinfo: København, Danmark : Institut for Jordbrug og Økologi
 Indholdsfortegnelse: -
 Note: Horticulture, Hortonomi
 Type: Speciale
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