Matches in SemOpenAlex for { <https://semopenalex.org/work/W2137595279> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2137595279 endingPage "586" @default.
- W2137595279 startingPage "575" @default.
- W2137595279 abstract "Growth chamber studies were conducted to examine seed dormancy and germination requirements of Pitcher's thistle (Cirsium pitcheri (Torr. ex Eaton) Torr. & Gray), a threatened species endemic to the shoreline sand dunes of the Great Lakes. We determined the effects of different environmental regimes on breaking seed dormancy of this monocarpic perennial. The data showed that seeds of C. pitcheri possessed innate dormancy that was caused by a hard seed coat as well as inhibitory compounds within the seed. Seed germination requirements were very specific. Exposure of seeds to different temperatures and photoperiods in a growth chamber had little effect on breaking seed dormancy unless the seeds had been pretreated. Pretreatment of seeds by cold stratification and its duration, scarification by sand paper or sulphuric acid, and application of gibberellic acid were also not very effective for breaking dormancy of C. pitcheri. High germination was obtained only when seeds were pretreated either by surgically removing the seed coat or by nicking the seed on the radicle or cotyledonary end. After this pretreatment seeds germinated over a temperature range of 15-30°C, but the highest proportion of seeds germinated when temperatures were above 20°C. Under natural conditions, germination of C. pitcheri seeds occurs in spring after they have overwintered and experienced the pretreatment of stratification and scarification through freezing and thawing of the substrate. Aqueous extract of C. pitcheri seeds had a strong inhibitory effect on germination of Oenothera biennis L. seeds indicating an allelopathic chemical in the seed. There was no relationship between the seed size of C. pitcheri and the germinability of seeds.Key words: Cirsium pitcheri, threatened species, seed dormancy, seed germination, scarification, stratification, nicking of seeds." @default.
- W2137595279 created "2016-06-24" @default.
- W2137595279 creator A5038798689 @default.
- W2137595279 creator A5047639672 @default.
- W2137595279 date "1998-04-01" @default.
- W2137595279 modified "2023-10-18" @default.
- W2137595279 title "Population ecology of Cirsium pitcheri on Lake Huron sand dunes. III. Mechanisms of seed dormancy" @default.
- W2137595279 cites W1171683239 @default.
- W2137595279 cites W1729553785 @default.
- W2137595279 cites W2033959739 @default.
- W2137595279 cites W2047620173 @default.
- W2137595279 cites W2059528873 @default.
- W2137595279 cites W2094889886 @default.
- W2137595279 cites W2319659874 @default.
- W2137595279 doi "https://doi.org/10.1139/b98-029" @default.
- W2137595279 hasPublicationYear "1998" @default.
- W2137595279 type Work @default.
- W2137595279 sameAs 2137595279 @default.
- W2137595279 citedByCount "8" @default.
- W2137595279 countsByYear W21375952792015 @default.
- W2137595279 countsByYear W21375952792016 @default.
- W2137595279 countsByYear W21375952792019 @default.
- W2137595279 countsByYear W21375952792020 @default.
- W2137595279 crossrefType "journal-article" @default.
- W2137595279 hasAuthorship W2137595279A5038798689 @default.
- W2137595279 hasAuthorship W2137595279A5047639672 @default.
- W2137595279 hasConcept C100701293 @default.
- W2137595279 hasConcept C144024400 @default.
- W2137595279 hasConcept C144027150 @default.
- W2137595279 hasConcept C149923435 @default.
- W2137595279 hasConcept C192943249 @default.
- W2137595279 hasConcept C2777970491 @default.
- W2137595279 hasConcept C2778395844 @default.
- W2137595279 hasConcept C2908647359 @default.
- W2137595279 hasConcept C3527866 @default.
- W2137595279 hasConcept C59822182 @default.
- W2137595279 hasConcept C6557445 @default.
- W2137595279 hasConcept C86803240 @default.
- W2137595279 hasConcept C88548481 @default.
- W2137595279 hasConceptScore W2137595279C100701293 @default.
- W2137595279 hasConceptScore W2137595279C144024400 @default.
- W2137595279 hasConceptScore W2137595279C144027150 @default.
- W2137595279 hasConceptScore W2137595279C149923435 @default.
- W2137595279 hasConceptScore W2137595279C192943249 @default.
- W2137595279 hasConceptScore W2137595279C2777970491 @default.
- W2137595279 hasConceptScore W2137595279C2778395844 @default.
- W2137595279 hasConceptScore W2137595279C2908647359 @default.
- W2137595279 hasConceptScore W2137595279C3527866 @default.
- W2137595279 hasConceptScore W2137595279C59822182 @default.
- W2137595279 hasConceptScore W2137595279C6557445 @default.
- W2137595279 hasConceptScore W2137595279C86803240 @default.
- W2137595279 hasConceptScore W2137595279C88548481 @default.
- W2137595279 hasIssue "4" @default.
- W2137595279 hasLocation W21375952791 @default.
- W2137595279 hasOpenAccess W2137595279 @default.
- W2137595279 hasPrimaryLocation W21375952791 @default.
- W2137595279 hasRelatedWork W1545577105 @default.
- W2137595279 hasRelatedWork W1990546416 @default.
- W2137595279 hasRelatedWork W2047352217 @default.
- W2137595279 hasRelatedWork W2098968573 @default.
- W2137595279 hasRelatedWork W2108928905 @default.
- W2137595279 hasRelatedWork W2110923220 @default.
- W2137595279 hasRelatedWork W2184598493 @default.
- W2137595279 hasRelatedWork W2159546285 @default.
- W2137595279 hasRelatedWork W2184179684 @default.
- W2137595279 hasRelatedWork W868304079 @default.
- W2137595279 hasVolume "76" @default.
- W2137595279 isParatext "false" @default.
- W2137595279 isRetracted "false" @default.
- W2137595279 magId "2137595279" @default.
- W2137595279 workType "article" @default.