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Analysis of the Physical Properties of Seeds of Selected Viburnum Species for the Needs of Seed Sorting Operations. Processes (Basel) 2021. [DOI: 10.3390/pr9040711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Viburnum is a genus of colorful and ornamental plants popular in landscape design on account of their high esthetic appeal. The physical properties of viburnum seeds have not been investigated in the literature to date. Therefore, the aim of this study was to characterize the seeds of selected Viburnum species and to search for potential relationships between their physical attributes for the needs of seed sorting operations. The basic physical parameters of the seeds of six Viburnum species were measured, and the relationships between these attributes were determined in correlation and regression analyses. The average values of the evaluated parameters were determined in the following range: terminal velocity—from 5.6 to 7.9 m s−1, thickness—from 1.39 to 1.87 mm, width—from 3.59 to 6.33 mm, length—from 5.58 to 7.44 mm, angle of external friction—from 36.7 to 43.8°, mass—from 16.7 to 35.0 mg. The seeds of V. dasyanthum, V. lentago and V. sargentii should be sorted in air separators, and the seeds of V. lantana and V. opulus should be processed with the use of mesh screens with round apertures to obtain uniform size fractions. The seeds of V. rhytodophyllum cannot be effectively sorted into batches with uniform seed mass, but they can be separated into groups with similar dimensions.
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Porceddu M, Pritchard HW, Mattana E, Bacchetta G. Differential Interpretation of Mountain Temperatures by Endospermic Seeds of Three Endemic Species Impacts the Timing of In Situ Germination. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1382. [PMID: 33081420 PMCID: PMC7603068 DOI: 10.3390/plants9101382] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 11/18/2022]
Abstract
Predicting seed germination in the field is a critical part of anticipating the impact of climate change on the timing of wild species regeneration. We combined thermal time and soil heat sum models of seed germination for three endemic Mediterranean mountain species with endospermic seeds and morphophysiological dormancy: Aquilegia barbaricina, Paeonia corsica, and Ribes sandalioticum. Seeds were buried in the soil within the respective collection sites, both underneath and outside the tree canopy, and their growth was assessed regularly and related to soil temperatures and estimates of the thermal characteristics of the seeds. The thermal thresholds for embryo growth and seed germination of A. barbaricina assessed in previous studies under controlled conditions were used to calculate soil heat sum accumulation of this species in the field. Thermal thresholds of seed germination for P. corsica and R. sandalioticum were not previously known and were estimated for the first time in this field study, based on findings of previous works carried out under controlled conditions. Critical embryo length and maximum germination for A. barbaricina were reached in April, and in December for R. sandalioticum. Seeds of P. corsica stay dormant in the ground until the following summer, and the critical embryo length and highest germination were detected from September to December. Soil heat sum models predicted earlier germination by one month for all three species under two Intergovernmental Panel on Climate Change (IPCC) scenarios, based on the assumption that the estimated thermal thresholds will remain constant through climate changes. This phenological shift may increase the risk of mortality for young seedlings. The models developed provide important means of connecting the micro-environmental niche for in situ seed germination and the macro-environmental parameters under a global warming scenario.
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Affiliation(s)
- Marco Porceddu
- Sardinian Germplasm Bank (BG-SAR), Hortus Botanicus Karalitanus (HBK), University of Cagliari, Viale S. Ignazio da Laconi, 9-11, 09123 Cagliari, Italy;
- Centre for the Conservation of Biodiversity (CCB), Life and Environmental Sciences Department, University of Cagliari, Viale S. Ignazio da Laconi 11-13, 09123 Cagliari, Italy
| | - Hugh W. Pritchard
- Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst, Ardingly, West Sussex RH17 6TN, UK; (H.W.P.); (E.M.)
| | - Efisio Mattana
- Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst, Ardingly, West Sussex RH17 6TN, UK; (H.W.P.); (E.M.)
| | - Gianluigi Bacchetta
- Sardinian Germplasm Bank (BG-SAR), Hortus Botanicus Karalitanus (HBK), University of Cagliari, Viale S. Ignazio da Laconi, 9-11, 09123 Cagliari, Italy;
- Centre for the Conservation of Biodiversity (CCB), Life and Environmental Sciences Department, University of Cagliari, Viale S. Ignazio da Laconi 11-13, 09123 Cagliari, Italy
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Park B, Sinnott-Armstrong M, Schlutius C, Zuluaga JCP, Spriggs EL, Simpson RG, Benavides E, Landis MJ, Sweeney PW, Eaton DAR, Donoghue MJ. Sterile marginal flowers increase visitation and fruit set in the hobblebush (Viburnum lantanoides, Adoxaceae) at multiple spatial scales. ANNALS OF BOTANY 2019; 123:381-390. [PMID: 29982369 PMCID: PMC6344212 DOI: 10.1093/aob/mcy117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/05/2018] [Indexed: 05/13/2023]
Abstract
BACKGROUND AND AIMS Enlarged sterile flowers on the periphery of inflorescences increase the attractiveness of floral displays, and previous studies have generally demonstrated that these have positive effects on insect visitation and/or reproductive success. However, experiments have not specifically been designed to examine the benefits of sterile flowers under conditions that reflect the early stages in their evolution, i.e. when plants that produce sterile flowers are at low frequency. METHODS Over three years, three experiments were performed in natural populations of Viburnum lantanoides, which produces sterile marginal flowers (SMFs). The first experiment established that fruit production in V. lantanoides increases with the receipt of outcross pollen. The second tested the role of SMFs under extant conditions, comparing fruit production in two populations composed entirely of intact plants or entirely of plants with the SMFs removed. The third was designed to mimic the presumed context in which SMFs first evolved; here, SMFs were removed from all but a few plants in a population, and rates of insect visitation and fruit set were compared between plants with intact and denuded SMFs. KEY RESULTS In comparing whole populations, the presence of SMFs nearly doubled fruit set. Under simulated 'ancestral' conditions within a population, plants with intact SMFs received double the insect visits and produced significantly more fruits than denuded plants. There was no significant effect of the number of inflorescences or fertile flowers on insect visitation or fruit set, indicating that the presence of SMFs accounted for these differences. CONCLUSIONS The presence of SMFs significantly increased pollinator attraction and female reproductive success both in contemporary and simulated ancestral contexts, indicating that stabilizing selection is responsible for their maintenance, and directional selection likely drove their evolution when they first appeared. This study demonstrates a novel approach to incorporating historically relevant scenarios into experimental studies of floral evolution.
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Affiliation(s)
- Brian Park
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
- For correspondence. E-mail
| | | | - Caroline Schlutius
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
| | | | | | - Raymond G Simpson
- Peabody Museum of Natural History, Yale University, New Haven, CT, USA
| | - Edgar Benavides
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
| | - Michael J Landis
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
| | - Patrick W Sweeney
- Peabody Museum of Natural History, Yale University, New Haven, CT, USA
| | - Deren A R Eaton
- Department of Ecology, Evolution, and Environment, Columbia University, New York, NY, USA
| | - Michael J Donoghue
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
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Villegente M, Marmey P, Job C, Galland M, Cueff G, Godin B, Rajjou L, Balliau T, Zivy M, Fogliani B, Sarramegna-Burtet V, Job D. A Combination of Histological, Physiological, and Proteomic Approaches Shed Light on Seed Desiccation Tolerance of the Basal Angiosperm Amborella trichopoda. Proteomes 2017; 5:E19. [PMID: 28788068 PMCID: PMC5620536 DOI: 10.3390/proteomes5030019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/22/2017] [Accepted: 07/25/2017] [Indexed: 12/13/2022] Open
Abstract
Desiccation tolerance allows plant seeds to remain viable in a dry state for years and even centuries. To reveal potential evolutionary processes of this trait, we have conducted a shotgun proteomic analysis of isolated embryo and endosperm from mature seeds of Amborella trichopoda, an understory shrub endemic to New Caledonia that is considered to be the basal extant angiosperm. The present analysis led to the characterization of 415 and 69 proteins from the isolated embryo and endosperm tissues, respectively. The role of these proteins is discussed in terms of protein evolution and physiological properties of the rudimentary, underdeveloped, Amborella embryos, notably considering that the acquisition of desiccation tolerance corresponds to the final developmental stage of mature seeds possessing large embryos.
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Affiliation(s)
- Matthieu Villegente
- Institut des Sciences Exactes et Appliquées (EA 7484), Université de Nouvelle-Calédonie, BP R4, 98851 Nouméa, Nouvelle-Calédonie.
| | - Philippe Marmey
- Institut de recherche pour le développement (IRD), UMR Diversité, Adaptation et Développement des plantes (DIADE), BP A5, 98848 Nouméa Cedex, Nouvelle-Calédonie.
| | - Claudette Job
- Centre National de la Recherche Scientifique (CNRS), CNRS-Université Claude Bernard Lyon-Institut National des Sciences Appliquées-Bayer CropScience (UMR5240), Bayer CropScience, F-69263 Lyon CEDEX 9, France.
| | - Marc Galland
- IJPB, Institut Jean-Pierre Bourgin (Institut National de la Rechercherche Agronomique(INRA), AgroParisTech, CNRS, Université Paris-Saclay) ; « Saclay Plant Sciences (SPS) » - RD10, F-78026 Versailles, France.
| | - Gwendal Cueff
- IJPB, Institut Jean-Pierre Bourgin (Institut National de la Rechercherche Agronomique(INRA), AgroParisTech, CNRS, Université Paris-Saclay) ; « Saclay Plant Sciences (SPS) » - RD10, F-78026 Versailles, France.
- AgroParisTech, Département « Science de la Vie et Santé », Unité de Formation-Recherche en Physiologie végétale, F-75231 Paris, France.
| | - Béatrice Godin
- IJPB, Institut Jean-Pierre Bourgin (Institut National de la Rechercherche Agronomique(INRA), AgroParisTech, CNRS, Université Paris-Saclay) ; « Saclay Plant Sciences (SPS) » - RD10, F-78026 Versailles, France.
- AgroParisTech, Département « Science de la Vie et Santé », Unité de Formation-Recherche en Physiologie végétale, F-75231 Paris, France.
| | - Loïc Rajjou
- IJPB, Institut Jean-Pierre Bourgin (Institut National de la Rechercherche Agronomique(INRA), AgroParisTech, CNRS, Université Paris-Saclay) ; « Saclay Plant Sciences (SPS) » - RD10, F-78026 Versailles, France.
- AgroParisTech, Département « Science de la Vie et Santé », Unité de Formation-Recherche en Physiologie végétale, F-75231 Paris, France.
| | - Thierry Balliau
- Plateforme d'Analyse Protéomique de Paris Sud Ouest (PAPPSO), GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, F-91190 Gif-sur-Yvette, France.
| | - Michel Zivy
- Plateforme d'Analyse Protéomique de Paris Sud Ouest (PAPPSO), GQE-Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, F-91190 Gif-sur-Yvette, France.
| | - Bruno Fogliani
- Institut des Sciences Exactes et Appliquées (EA 7484), Université de Nouvelle-Calédonie, BP R4, 98851 Nouméa, Nouvelle-Calédonie.
- Institut Agronomique Néo-Calédonien (IAC), Équipe ARBOREAL, Agriculture Biodiversité et Valorisation, BP 73 Port Laguerre, 98890 Païta, Nouvelle-Calédonie.
| | - Valérie Sarramegna-Burtet
- Institut des Sciences Exactes et Appliquées (EA 7484), Université de Nouvelle-Calédonie, BP R4, 98851 Nouméa, Nouvelle-Calédonie.
| | - Dominique Job
- Centre National de la Recherche Scientifique (CNRS), CNRS-Université Claude Bernard Lyon-Institut National des Sciences Appliquées-Bayer CropScience (UMR5240), Bayer CropScience, F-69263 Lyon CEDEX 9, France.
- AgroParisTech, Département « Science de la Vie et Santé », Unité de Formation-Recherche en Physiologie végétale, F-75231 Paris, France.
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Porceddu M, Fenu G, Bacchetta G. New findings on seed ecology of Ribes sardoum: can it provide a new opportunity to prevent the extinction of a threatened plant species? SYST BIODIVERS 2017. [DOI: 10.1080/14772000.2016.1271058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Marco Porceddu
- Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari. Viale Sant'Ignazio da Laconi, 13, 09123, Cagliari, Italy
- Banca del Germoplasma della Sardegna (BG-SAR), Hortus Botanicus Karalitanus (HBK), Università degli Studi di Cagliari. Viale Sant'Ignazio da Laconi, 9-11, 09123, Cagliari, Italy
| | - Giuseppe Fenu
- Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari. Viale Sant'Ignazio da Laconi, 13, 09123, Cagliari, Italy
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma. Piazzale A. Moro 5, 00185 Roma, Italy
| | - Gianluigi Bacchetta
- Centro Conservazione Biodiversità (CCB), Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari. Viale Sant'Ignazio da Laconi, 13, 09123, Cagliari, Italy
- Banca del Germoplasma della Sardegna (BG-SAR), Hortus Botanicus Karalitanus (HBK), Università degli Studi di Cagliari. Viale Sant'Ignazio da Laconi, 9-11, 09123, Cagliari, Italy
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Chen SY, Chou SH, Tsai CC, Hsu WY, Baskin CC, Baskin JM, Chien CT, Kuo-Huang LL. Effects of moist cold stratification on germination, plant growth regulators, metabolites and embryo ultrastructure in seeds of Acer morrisonense (Sapindaceae). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 94:165-173. [PMID: 26094157 DOI: 10.1016/j.plaphy.2015.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 06/04/2023]
Abstract
Breaking of seed dormancy by moist cold stratification involves complex interactions in cells. To assess the effect of moist cold stratification on dormancy break in seeds of Acer morrisonense, we monitored percentages and rates of germination and changes in plant growth regulators, sugars, amino acids and embryo ultrastructure after various periods of cold stratification. Fresh seeds incubated at 25/15 °C for 24 weeks germinated to 61%, while those cold stratified at 5 °C for 12 weeks germinated to 87% in 1 week. Neither exogenous GA3 nor GA4 pretreatment significantly increased final seed germination percentage. Total ABA content of seeds cold stratified for 12 weeks was reduced about 3.3-fold, to a concentration similar to that in germinated seeds (radicle emergence). Endogenous GA3 and GA7 were detected in 8-week and 12-week cold stratified seeds but not in fresh seeds. Numerous protein and lipid bodies were present in the plumule, first true leaves and cotyledons of fresh seeds. Protein and lipid bodies decreased greatly during cold stratification, and concentrations of total soluble sugars and amino acids increased. The major non-polar sugars in fresh seeds were sucrose and fructose, but sucrose increased and fructose decreased significantly during cold stratification. The major free amino acids were proline and tryptophan in fresh seeds, and proline increased and tryptophan decreased during cold stratification. Thus, as dormancy break occurs during cold stratification seeds of A. morrisonense undergo changes in plant growth regulators, proteins, lipids, sugars, amino acids and cell ultrastructure.
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Affiliation(s)
- Shun-Ying Chen
- Division of Silviculture, Taiwan Forestry Research Institute, 53 Nan-Hai Road, Taipei 10066, Taiwan
| | - Shih-Han Chou
- Division of Silviculture, Taiwan Forestry Research Institute, 53 Nan-Hai Road, Taipei 10066, Taiwan
| | - Ching-Chu Tsai
- Institute of Ecology and Evolutionary Biology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan
| | - Wen-Yu Hsu
- Division of Silviculture, Taiwan Forestry Research Institute, 53 Nan-Hai Road, Taipei 10066, Taiwan
| | - Carol C Baskin
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA; Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546, USA
| | - Jerry M Baskin
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Ching-Te Chien
- Division of Silviculture, Taiwan Forestry Research Institute, 53 Nan-Hai Road, Taipei 10066, Taiwan.
| | - Ling-Long Kuo-Huang
- Institute of Ecology and Evolutionary Biology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan.
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Spriggs EL, Clement WL, Sweeney PW, Madriñán S, Edwards EJ, Donoghue MJ. Temperate radiations and dying embers of a tropical past: the diversification of Viburnum. THE NEW PHYTOLOGIST 2015; 207:340-354. [PMID: 25644136 DOI: 10.1111/nph.13305] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 12/16/2014] [Indexed: 06/04/2023]
Abstract
We used a near-complete phylogeny for the angiosperm clade Viburnum to assess lineage diversification rates, and to examine possible morphological and ecological factors driving radiations. Maximum-likelihood and Bayesian approaches identified shifts in diversification rate and possible links to character evolution. We inferred the ancestral environment for Viburnum and changes in diversification dynamics associated with subsequent biome shifts. Viburnum probably diversified in tropical forests of Southeast Asia in the Eocene, with three subsequent radiations in temperate clades during the Miocene. Four traits (purple fruits, extrafloral nectaries, bud scales and toothed leaves) were statistically associated with higher rates of diversification. However, we argue that these traits are unlikely to be driving diversification directly. Instead, two radiations were associated with the occupation of mountainous regions and a third with repeated shifts between colder and warmer temperate forests. Early-branching depauperate lineages imply that the rare lowland tropical species are 'dying embers' of once more diverse lineages; net diversification rates in Viburnum likely decreased in these tropical environments after the Oligocene. We suggest that 'taxon pulse' dynamics might characterize other temperate plant lineages.
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Affiliation(s)
- Elizabeth L Spriggs
- Department of Ecology and Evolutionary Biology, Yale University, PO Box 208106, New Haven, CT, 06520, USA
| | - Wendy L Clement
- Department of Biology, The College of New Jersey, 2000 Pennington Rd, Ewing, NJ, 08628, USA
| | - Patrick W Sweeney
- Division of Botany, Peabody Museum of Natural History, Yale University, PO Box 208118, New Haven, CT, 06520, USA
| | - Santiago Madriñán
- Laboratorio de Botánica y Sistemática, Departamento de Ciencias Biológicas, Universidad de los Andes, Apartado Aéreo 4976, Bogotá, Colombia
| | - Erika J Edwards
- Department of Ecology and Evolutionary Biology, Brown University, Box G-W, 80 Waterman Street, Providence, RI, 02912, USA
| | - Michael J Donoghue
- Department of Ecology and Evolutionary Biology, Yale University, PO Box 208106, New Haven, CT, 06520, USA
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Hao HP, He Z, Li H, Shi L, Tang YD. Effect of root length on epicotyl dormancy release in seeds of Paeonia ludlowii, Tibetan peony. ANNALS OF BOTANY 2014; 113:443-452. [PMID: 24284815 PMCID: PMC3906966 DOI: 10.1093/aob/mct273] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 10/09/2013] [Indexed: 05/28/2023]
Abstract
BACKGROUND AND AIMS Epicotyl dormancy break in seeds that have deep simple epicotyl morphophysiological dormancy (MPD) requires radicle emergence and even a certain root length in some species. However, the mechanisms by which root length affects epicotyl dormancy break are not clear at present. This study aims to explore the relationship between root length and epicotyl dormancy release in radicle-emerged seeds of Tibetan peony, Paeonia ludlowii, with discussion of the possible mechanisms. METHODS Radicle-emerged seeds (radicle length 1.5, 3.0, 4.5 and 6.0 cm) were incubated at 5, 10 and 15 °C. During the stratification, some seeds were transferred to 15 °C and monitored for epicotyl-plumule growth. Hormone content was determined by ELISA, and the role of hormones in epicotyl dormancy release was tested by exogenous hormone and embryo culture. KEY RESULTS Cold stratification did not break the epicotyl dormancy until the root length was ≥6 cm. The indole-3-actic acid (IAA) and GA3 contents of seeds having 6 cm roots were significantly higher than those of seeds with other root lengths, but the abscisic acid (ABA) content was lowest among radicle-emerged seeds. GA3 (400 mg L(-1)) could break epicotyl dormancy of all radicle-emerged seeds, while IAA (200 mg L(-1)) had little or no effect. When grown on MS medium, radicles of naked embryos grew and cotyledons turned green, but epicotyls did not elongate. Naked embryos developed into seedlings on a mixed medium of MS + 100 mg L(-1) GA3. CONCLUSIONS A root length of ≥6.0 cm is necessary for epicotyl dormancy release by cold stratification. The underlying reason for root length affecting epicotyl dormancy release is a difference in the GA3/ABA ratio in the epicotyl within radicle-emerged seeds, which is mainly as a result of a difference in ABA accumulation before cold stratification.
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Affiliation(s)
| | | | | | - Lei Shi
- For correspondence. E-mail or
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