LIFE-HISTORY TRAITS AND PLOIDY LEVELS IN THE GENUS CAPSELLA (BRASSICACEAE)

DC FieldValueLanguage
dc.contributor.authorNEUFFER, B
dc.contributor.authorESCHNER, S
dc.date.accessioned2021-12-23T15:56:28Z-
dc.date.available2021-12-23T15:56:28Z-
dc.date.issued1995
dc.identifier.issn00084026
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/2360-
dc.description.abstractIn a random block field experiment, life-history traits associated with colonizing ability of diploid and tetraploid cytotypes of Capsella (Brassicaceae) were compared. These were germination, flowering, growth-form parameters, and leaf shape. Data are not in favour of differences in germination behaviour between the diploid and tetraploid Capsella species, as germination rate and capacity are highly influenced by inception and release of seed dormancy. Although our data at first glance seem to suggest that diploid C. rubella start flowering later than tetraploid C, bursa-pastor's, considerable ecotypic variation for flowering in both species makes it difficult to assign an effect specifically to ploidy level. We also conclude that plant height, rosette diameter, and branching number are not directly determined by ploidy level. In contrast however, leaf shape is clearly determined by ploidy level. In the light of all available data including data of previous experiments, we suggest that gene duplication by polyploidization may have been a key element that provided C, bursa-pastoris with additional genetic flexibility. It is not primarily the gain of colonization ability, as both species are weeds and colonizers. Rather, the greater genetic flexibility enabled C, bursa-pastoris to extend its range beyond that of C. rubella.
dc.language.isoen
dc.publisherNATL RESEARCH COUNCIL CANADA
dc.relation.ispartofCANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE
dc.subjectADAPTATION
dc.subjectBURSA-PASTORIS CRUCIFERAE
dc.subjectCAPSELLA
dc.subjectCYTOTYPES
dc.subjectDEMOGRAPHY
dc.subjectDIFFERENTIATION
dc.subjectENVIRONMENT
dc.subjectEVOLUTION
dc.subjectFLOWERING
dc.subjectGERMINATION
dc.subjectGROWTH FORM
dc.subjectLEAF MORPHOLOGY
dc.subjectPHENOTYPIC PLASTICITY
dc.subjectPlant Sciences
dc.subjectPLOIDY LEVEL
dc.subjectPOPULATIONS
dc.subjectSTELLARIA-LONGIPES COMPLEX
dc.titleLIFE-HISTORY TRAITS AND PLOIDY LEVELS IN THE GENUS CAPSELLA (BRASSICACEAE)
dc.typejournal article
dc.identifier.doi10.1139/b95-147
dc.identifier.isiISI:A1995RX21300006
dc.description.volume73
dc.description.issue9
dc.description.startpage1354
dc.description.endpage1365
dc.publisher.placeRESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA
dcterms.isPartOf.abbreviationCan. J. Bot.-Rev. Can. Bot.
crisitem.author.deptFB 05 - Biologie/Chemie-
crisitem.author.deptidfb05-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidNeBa468-
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