دورية أكاديمية
Viability and dormancy of the Clematis vitalba aerial seed bank.
العنوان: | Viability and dormancy of the Clematis vitalba aerial seed bank. |
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المؤلفون: | Jarvis-Lowry B; School of Agriculture and Environment, Massey University, Palmerston North, New Zealand., Harrington KC; School of Agriculture and Environment, Massey University, Palmerston North, New Zealand., Ghanizadeh H; School of Agriculture and Environment, Massey University, Palmerston North, New Zealand., Robertson AW; School of Natural Sciences, Massey University, Palmerston North, New Zealand. |
المصدر: | Plant biology (Stuttgart, Germany) [Plant Biol (Stuttg)] 2024 Apr; Vol. 26 (3), pp. 457-466. Date of Electronic Publication: 2024 Feb 26. |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | 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 |
أسماء مطبوعة: | Publication: Oxford, England : Wiley Original Publication: Stuttgart : New York, NY : G. Thieme Verlag ; Thieme New York, c1999- |
مواضيع طبية MeSH: | Plant Dormancy*/physiology , Clematis*, Humans ; Seed Bank ; Germination/physiology ; Seeds/physiology |
مستخلص: | Old man's beard (Clematis vitalba L.) is a liana species that has become invasive in many areas of its introduced range. Seeds are produced in abundance and are both physiologically and morphologically dormant upon maturity. To understand the importance of seeds to its invasiveness, changes in viability and dormancy of the aerial seed bank were tracked throughout the after-ripening period and during storage. Seeds collected every second month for 2 years were subjected to germination tests. Other seeds stored in outdoor ambient conditions or in a dry, chilled state were dissected before, during, and after imbibition, as well as during incubation, to measure embryo size. Less than 72% of seeds on the mother plant were viable. Viable seeds remained completely morpho-physiologically dormant throughout autumn, even when treated with nitrate. Physiological dormancy declined in response to seasonal changes, yet morphological dormancy did not change until seeds had been exposed to appropriate germination conditions for several days. Fully dormant autumn seeds decayed at higher rates during incubation than partially or fully after-ripened seeds, which were also more germinable and less dormant. Furthermore, seeds incubated in complete darkness were more likely to decay or remain dormant than those exposed to light. This study demonstrates that fewer than three-quarters of seeds produced are viable and further decay occurs after dispersal, yet total fertility is still very high, with enormous propagule pressure from seeds alone. Viable seeds are protected with two forms of dormancy; morphological dormancy requires additional germination cues in order to break after seasonal changes break physiological dormancy. (© 2024 The Authors. Plant Biology published by John Wiley & Sons Ltd on behalf of German Society for Plant Sciences, Royal Botanical Society of the Netherlands.) |
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معلومات مُعتمدة: | Horizons Regional Council; New Zealand Tree Crops Association; New Zealand Plant Protection Society; George Mason Charitable Trust; Massey University; New Zealand Biosecurity Institute |
فهرسة مساهمة: | Keywords: invasive species; liana; morphological dormancy; old man's beard; physiological dormancy; seed dormancy |
تواريخ الأحداث: | Date Created: 20240226 Date Completed: 20240326 Latest Revision: 20240326 |
رمز التحديث: | 20240326 |
DOI: | 10.1111/plb.13629 |
PMID: | 38407522 |
قاعدة البيانات: | MEDLINE |
تدمد: | 1438-8677 |
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DOI: | 10.1111/plb.13629 |