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Seed dormancy and germination of three Corydalis species, disjunct relict species in East Asia.

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Τίτλος: Seed dormancy and germination of three Corydalis species, disjunct relict species in East Asia.
Συγγραφείς: Kim CW; Department of Horticulture and Breeding, Graduate School of Gyeongkuk National University, Andong, Korea., Walck JL; Department of Biology, Middle Tennessee State University, Murfreesboro, Tennessee, USA., Hidayati SN; Department of Biology, Middle Tennessee State University, Murfreesboro, Tennessee, USA., Ko CH; Forest Biological Resources Utilization Center, Yangpyeong, Korea., Rhie YH; Department of Horticulture, Kangwon National University, Chuncheon, Korea., Lee SY; Department of Horticulture and Breeding, Graduate School of Gyeongkuk National University, Andong, Korea.; Major of Smart Horticultural Science, Gyeongkuk National University, Andong, Korea.
Πηγή: Plant biology (Stuttgart, Germany) [Plant Biol (Stuttg)] 2026 Aug; Vol. 28 (5), pp. 1573-1586. Date of Electronic Publication: 2026 Jun 13.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Wiley Country of Publication: England NLM ID: 101148926 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1438-8677 (Electronic) Linking ISSN: 14358603 NLM ISO Abbreviation: Plant Biol (Stuttg) Subsets: MEDLINE
Imprint Name(s): Publication: Oxford, England : Wiley
Original Publication: Stuttgart : New York, NY : G. Thieme Verlag ; Thieme New York, c1999-
Ιατρικοί όροι (MeSH): Plant Dormancy*/physiology , Germination*/physiology , Germination*/drug effects , Corydalis*/physiology , Corydalis*/growth & development , Seeds*/physiology , Seeds*/growth & development, Gibberellins/pharmacology ; Seedlings/physiology ; Seedlings/growth & development ; Asia, Eastern ; Temperature ; Cold Temperature ; Seasons
Περίληψη: Disjunct congeneric species are common in the temperate flora of Europe, East Asia and eastern North America. However, it is unclear whether the kind of seed dormancy is maintained after divergence. This study aimed to determine the type of seed dormancy of three Corydalis species native to Korea and examine whether the dormancy trait has been conserved after long-term separation. We examined embryo growth and germination characteristics of C. remota, C. incisa and C. speciosa through phenology experiments, controlled temperature experiments, stratification treatments and GA3 application. All three species had underdeveloped embryos at dispersal and exhibited morphophysiological dormancy (MPD). C. remota and C. incisa required exposure to warm followed by cold temperatures for embryo growth and germination, and gibberellic acid (GA3) treatment failed to promote germination, indicating that both species have deep simple regular MPD. By contrast, C. speciosa embryos grew and germinated under cold conditions, and while germination was further enhanced by prior warm exposure, GA3 did not overcome dormancy, suggesting that C. speciosa has non-deep complex regular MPD. In all three species, embryo growth occurred in late autumn to winter with germination and seedling emergence in late winter to early spring. Whereas all three species had the same class of dormancy (MPD), differences in temperature responses were found among them. This pattern, consistent with findings from congeneric members on other continents, indicates that MPD is conserved within the genus, whereas specific dormancy levels have diversified in response to regional environmental conditions.
(© 2026 Wiley‐VCH GmbH. Published by John Wiley & Sons Ltd.)
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Grant Information: KNA1-2-52 Korea National Arboretum; 26-4 Korea National Arboretum; NRF-2018R1A6A1A03024862 National Research Foundation of Korea
Contributed Indexing: Keywords: Corydalis; environmental traits; germination; morphophysiological dormancy; seed dormancy
Substance Nomenclature: 0 (Gibberellins)
BU0A7MWB6L (gibberellic acid)
Entry Date(s): Date Created: 20260613 Date Completed: 20260713 Latest Revision: 20260813
Update Code: 20260813
PubMed Central ID: PMC13358664
DOI: 10.1111/plb.70239
PMID: 42287741
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1438-8677
DOI:10.1111/plb.70239