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Artykuły w czasopismach na temat „Seed dormancy”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Qaderi, Mirwais M. "Environmental Regulation of Weed Seed Dormancy and Germination." Seeds 2, no. 3 (2023): 259–77. http://dx.doi.org/10.3390/seeds2030020.

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Many weeds produce dormant seeds that are unable to complete germination under favourable conditions. There are two types of seed dormancy: primary dormancy (innate dormancy), in which seeds are in a dormant state upon release from the parent plant, and secondary dormancy (induced dormancy), in which dormancy develops in seeds through some experience after release from the parent plant. Mechanisms of seed dormancy are categorized as embryo dormancy and coat-imposed dormancy. In embryo dormancy, the control of dormancy resides within the embryo itself, and in coat-imposed dormancy, it is mainta

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Steadman, Kathryn J., Amanda J. Ellery, Ross Chapman, Andrew Moore, and Neil C. Turner. "Maturation temperature and rainfall influence seed dormancy characteristics of annual ryegrass (Lolium rigidum)." Australian Journal of Agricultural Research 55, no. 10 (2004): 1047. http://dx.doi.org/10.1071/ar04083.

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The role of temperature and rainfall during seed development in modulating subsequent seed dormancy status was studied for Lolium rigidum Gaud. (annual ryegrass). Climatic parameters relating to geographic origin were compared with annual ryegrass seed dormancy characteristics for seeds collected from 12 sites across the southern Western Australian cropping region. Seed germination was tested soon after collection and periodically during subsequent after-ripening. Temperature in the year of seed development and long-term rainfall patterns showed correlations with aspects of seed dormancy, part

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Esfandiari, Azadeh, Cara Norling, Ryohei Kaji, et al. "Variations in Seed Dormancy Occurrence and Their Classifications in Thirteen Actinidia Species." Seeds 3, no. 2 (2024): 179–96. http://dx.doi.org/10.3390/seeds3020014.

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As differences in seed dormancy between Actinidia species have not been reported previously, in this study we characterized the variation in the dormancy of seeds in 13 kiwifruit species that originated from different regions of China and Taiwan, and for which mature plants are now growing in New Zealand orchards. Dormancy-breaking treatments, including cold-moist stratification, seed coat scarification and soaking in water and gibberellic acid (GA3), were tested for their efficacy in alleviating dormancy and improving final germination and germination rates. In addition, we assessed seed viab

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Peroni, Patricia A. "Field and Laboratory Investigations of Seed Dormancy in Red Maple (Acer Rubrum L.) from the North Carolina Piedmont." Forest Science 41, no. 2 (1995): 378–86. http://dx.doi.org/10.1093/forestscience/41.2.378.

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Abstract Field and laboratory investigations were conducted using seeds collected from red maple populations located in the North Carolina piedmont to determine: (1) the percentage of red maple seedling establishment each spring that can be attributed to dormant seeds, (2) the percentage of seeds that display dormancy upon dispersal, (3) the effect of short periods of dry conditions at 20-22°C on dormancy and seed viability. The greenhouse results indicated that red maple from these populations display moderate levels of seed dormancy (14%) when provided with conditions conducive to germinatio

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Haile, Teketel A., and Steven J. Shirtliffe. "Effect of Harvest Timing on Dormancy Induction in Canola Seeds." Weed Science 62, no. 3 (2014): 548–54. http://dx.doi.org/10.1614/ws-d-13-00178.1.

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Seedbank persistence in canola seeds is related to their potential to develop secondary dormancy. This can result in volunteer weed problems many years after canola production. The potential to be induced into secondary dormancy is controlled by both the canola genetics and the environment of the mother plant. However, the effect of time of harvesting on secondary dormancy potential is not known. The objective of this study was to determine the effect of harvest timing on potential to develop seed dormancy in canola. Six harvest samples were collected weekly from two canola genotypes (5440 and

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Buijs, Gonda. "A Perspective on Secondary Seed Dormancy in Arabidopsis thaliana." Plants 9, no. 6 (2020): 749. http://dx.doi.org/10.3390/plants9060749.

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Primary seed dormancy is the phenomenon whereby seeds newly shed by the mother plant are unable to germinate under otherwise favorable conditions for germination. Primary dormancy is released during dry seed storage (after-ripening), and the seeds acquire the capacity to germinate upon imbibition under favorable conditions, i.e., they become non-dormant. Primary dormancy can also be released from the seed by various treatments, for example, by cold imbibition (stratification). Non-dormant seeds can temporarily block their germination if exposed to unfavorable conditions upon seed imbibition un

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Ai, Jiaqi, Wuhong Wang, Tianhua Hu, et al. "Identification of Quantitative Trait Loci and Candidate Genes Controlling Seed Dormancy in Eggplant (Solanum melongena L.)." Genes 15, no. 4 (2024): 415. http://dx.doi.org/10.3390/genes15040415.

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Seed dormancy is a life adaptation trait exhibited by plants in response to environmental changes during their growth and development. The dormancy of commercial seeds is the key factor affecting seed quality. Eggplant seed dormancy is controlled by quantitative trait loci (QTLs), but reliable QTLs related to eggplant dormancy are still lacking. In this study, F2 populations obtained through the hybridization of paternally inbred lines with significant differences in dormancy were used to detect regulatory sites of dormancy in eggplant seeds. Three QTLs (dr1.1, dr2.1, and dr6.1) related to see

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Kehl, Kassiana, Ivan Carvalho, Deivid Sacon, et al. "Characterization of Brazilian black oat genotypes regarding seed dormancy." DELOS: DESARROLLO LOCAL SOSTENIBLE 16, no. 48 (2023): 3337–53. http://dx.doi.org/10.55905/rdelosv16.n48-023.

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The objective of this work was to characterize 30 black oat genotypes regarding seed dormancy. The experiment was carried out in the 2018 and 2019 seasons in a completely randomized design with three factors, being 30 black oat genotypes, two methods of seed germination analysis (with and without dormancy breaking) and five evaluation periods (0, 30, 60, 90 and 120 days after harvest), distributed in four replicates. In each postharvest period, the variables: normal seedlings, abnormal seedlings, number of dormant seeds and number of dead seeds were analyzed. There was significant interaction

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Mira, Sara, Luciana Veiga-Barbosa, and Félix Pérez-García. "Seed dormancy and longevity variability of Hirschfeldia incana L. during storage." Seed Science Research 29, no. 2 (2019): 97–103. http://dx.doi.org/10.1017/s0960258519000072.

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AbstractWe studied the variability of germination, dormancy and viability loss of Hirschfeldia incana seeds in relation to seed size. Seeds were stored at 35°C under humid [75% relative humidity (RH)] or dry (33% RH) conditions. Seed germination and electrolyte leakage were evaluated periodically. Small seeds had lower longevity at humid or dry storage conditions (5 or 407 days, respectively) than large or intermediate seeds (7–9 or 536–727 days, respectively). Moreover, H. incana shows variability in seed dormancy related to seed size within a population, with small seeds having lower dormanc

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Jin, Yea-Jung, Han-Jin Jeong, Soo-Young Kim, Seong-Hyun Cho, Jin-Hwan Lee, and Du-Hyun Kim. "Pelleting of Physical Dormancy Small-Seeded Species in Astragalus sikokianus Nakai." Agronomy 13, no. 1 (2023): 206. http://dx.doi.org/10.3390/agronomy13010206.

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Astragalus sikokianus is a rare Japanese perennial of the seashore that was reported to be extinct in the wild. The small seed size and deep dormancy of A. sikokianus make it difficult for direct seeding restoration in aspects of seed handling, transport, planting, and seedling establishment. For the large-scale economic restoration of dormant small-seeded species, seed pelleting combined with the breaking of dormancy was studied. Physiological (prechilling and plant hormones) and physical (hot water, hydrochloric acid, and sulfuric acid) seed dormancy break treatments were evaluated. The dorm

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Tieu, Anle, and Louise M. Egerton-Warburton. "Contrasting seed morphology dynamics in relation to the alleviation of dormancy with soil storage." Canadian Journal of Botany 78, no. 9 (2000): 1187–98. http://dx.doi.org/10.1139/b00-093.

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We examined the effect of prolonged (up to 450 days) soil burial in the field on seed morphological traits (seed coat structure, permeability) to identify their potential roles in seed dormancy and release. Such traits were examined in species with seeds that demonstrated an obligate requirement for soil storage before germination: the dormant seeds of Anigozanthos manglesii D. Don, Conostylis neocymosa Hopper, Stylidium affine Sonder, and Stylidium crossocephalum F. Muell., and the deeply dormant fruits of Leucopogon conostephioides D.C. We detected species-specific and environmentally induce

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Ismaturrahmi, Ismaturrahmi, Hasanuddin Hasanuddin, and Agam Ihsan Hereri. "Teknik pematahan dormansi secara fisik dan kimia terhadap viabilitas benih aren (Arenga pinnata Merr.)." Jurnal Ilmiah Mahasiswa Pertanian 3, no. 4 (2018): 105–12. http://dx.doi.org/10.17969/jimfp.v3i4.9211.

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Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh teknik pematahan dormansi secara fisik dan kimia, serta nyata tidaknya interaksi antara pematahan dormansi secara fisik dengan pematahan dormansi secara kimia terhadap viabilitas benih aren. Penelitian ini dilaksanakan di Laboratorium Ilmu dan teknologi Benih, Fakultas Pertanian, Universitas Syiah Kuala, Darussalam, Banda Aceh, dari bulan juli sampai November 2017. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) Pola Faktorial 4 x 4 dengan 3 ulangan. Penelitian ini menggunakan 2 faktor yaitu: pematahan dormansi secara fisik (S

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Thompson, Ken, Roberta M. Ceriani, Jan P. Bakker, and Renée M. Bekker. "Are seed dormancy and persistence in soil related?" Seed Science Research 13, no. 2 (2003): 97–100. http://dx.doi.org/10.1079/ssr2003128.

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AbstractThere is confusion in the ecological literature between seed dormancy and persistence in soil. Some ecologists seem to assume that dormancy is necessary for persistence, while others imply that dormancy and persistence are virtually synonymous. Here, we show that there is no close relationship between dormancy and persistence and, incidentally, that conventional methods of investigating soil seed banks underestimate the persistence of species with dormant seeds. The confusion appears to arise from the concept of ‘enforced dormancy’, which is not genuinely dormancy at all, and would be

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Preethi Jenifer, Praticia S. "Catalyzing Germination: Exploring Scarification and Hot Water Treatments for Dormancy Breaking and Enhanced Storage in Ficus Benjamina L., Thespesia populnea L., Phyllanthus emblica L., Tectona grandis L.f. seeds." International Journal of Agricultural Sciences and Veterinary Medicine 12, no. 1 (2024): 9–15. http://dx.doi.org/10.25303/1201ijasvm09015.

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A seed is a significant stage in the plant life cycle and is often referred to as the dispersal unit of the plant. There are two types of seeds: dormant seeds and non-dormant seeds. A dormant seed is one that does not have the capacity to germinate within a definite period under any combination of normal, physical and environmental factors. The other type is favourable for germination and when the seed becomes non-dormant, the circumstances that break dormancy and the location of water gaps in seeds, remain unclear. In the present study, we consider the adaptive role of impermeable coats in th

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Schatral, A., J. M. Osborne, and J. E. D. Fox. "Dormancy in seeds of Hibbertia cuneiformis and H. huegelii (Dilleniaceae)." Australian Journal of Botany 45, no. 6 (1997): 1045. http://dx.doi.org/10.1071/bt96056.

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Dormancy delays the germination of seeds in two species of the primitive angiosperm genus Hibbertia (H. cuneiformis and H. huegelii, family Dilleniaceae). After seed coat removal, germination increased in 18-month-old seeds of H. cuneiformis and 6- to 8-month-old seeds of H. huegelii. Hence, seeds of the two species exhibit seed coat dormancy. The removal of the seed coat may stimulate germination, as the result of increased water uptake, and/or the removal of mechanical and chemical inhibition. However, the occurrence of imbibitional injury and a reduced percentage of vigorous seedlings in de

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Silveira, Fernando, Rafaella Ribeiro, Sara Soares, Daniel Rocha, and Caroline Oliveira. "Physiological dormancy and seed germination inhibitors in Miconia (Melastomataceae)." Plant Ecology and Evolution 146, no. (3) (2013): 290–94. https://doi.org/10.5091/plecevo.2013.817.

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<b>Background and aims</b> – Seed dormancy is rarely studied in the Neotropical area preventing attempts to understand its phylogenetic and biogeographic distribution. <b>Methods</b> – We estimated seed viability and germination of fresh-collected seeds of <i>Miconia ligustroides</i> and <i>Miconia pepericarpa</i> . Seed coat permeability tests and embryo anatomy analyses were performed to determine seed dormancy class. The effect of different concentrations of extract of mature berries on seed germination was experimentally tested. <b>Key results</b> – Both species produce dormant seeds with

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Gill, GS, and WM Blacklow. "Variations in seed dormancy and rates of development of great brome, Bromus diandrus Roth., as adaptations to the climates of southern Australia and implications for weed control." Australian Journal of Agricultural Research 36, no. 2 (1985): 295. http://dx.doi.org/10.1071/ar9850295.

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Seeds of great brome, B. diandrus, were collected from 14 sites across southern Australia and sown at Perth, W.A. The duration of seed dormancy varied among the seed accessions when produced at the common field site of Perth, which suggested that variations in dormancy were genetically controlled. The environment of Perth shortened the duration of dormancy in all the accessions but did not affect their ranking, indicating a lack of genotype x environment interaction. The duration of dormancy was positively correlated (r = 0.78) with the duration of the rain-free summers of the site of collecti

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Molizane, Debora Manzano, Pricila Greyse dos Santos Julio, Sandra Maria Carmello-Guerreiro, and Claudio José Barbedo. "Physical, physiological and anatomical changes in Erythrina speciosa Andrews seeds from different seasons related to the dormancy degree." Journal of Seed Science 40, no. 3 (2018): 331–41. http://dx.doi.org/10.1590/2317-1545v40n3199428.

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Abstract: Dormancy, a process that allows seeds to survive in adverse environments, needs to be broken for germination to start, for example, by the disruption of the impermeable layer of seeds. Mature seeds of Erythrina speciosa present seed coat impermeability, whose degree depends on the year of production. The objective of this study was to analyze the physical, physiological, anatomical, and ultrastructural seed coat modifications, according to the environmental conditions in which seeds were produced, as well as the seed sensitivity to treatments as for breaking dormancy. E. speciosa see

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Chen, Shun-Ying, Ching-Te Chien, Jeng-Der Chung, Yuh-Shyong Yang, and Shing-Rong Kuo. "Dormancy-break and germination in seeds of Prunus campanulata (Rosaceae): role of covering layers and changes in concentration of abscisic acid and gibberellins." Seed Science Research 17, no. 1 (2007): 21–32. http://dx.doi.org/10.1017/s0960258507383190.

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AbstractIntact seeds (seed+endocarp) from freshly harvested fruits of Prunus campanulata were dormant, and required 4–6 weeks of warm followed by 8 weeks of cold stratification for maximum germination percentage. Removing both endocarp and seed coat, however, promoted germination in a high percentage of non-stratified seeds. Treatment of intact, non-stratified seeds with gibberellic acid (GA3) was only partially effective in breaking dormancy. However, GA3 promoted germination of non-stratified seeds in which the endocarp (but not the seed coat) had been removed. The order of abscisic acid (AB

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Ramos, Desirée M., Ana B. S. Liaffa, Pedro Diniz, et al. "Seed tolerance to heating is better predicted by seed dormancy than by habitat type in Neotropical savanna grasses." International Journal of Wildland Fire 25, no. 12 (2016): 1273. http://dx.doi.org/10.1071/wf16085.

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Open savannas and wet grasslands are present under the same seasonal macro-climate in central Brazil. However, in open savannas, temperatures during fires are higher than in wet grasslands. Grasses dominate both ecosystems and exhibit large variation in seed dormancy. We hypothesise that seeds of grass species from open savannas are more tolerant to heating than those of wet grasslands. Also, assuming that dormant seeds remain longer in the soil than non-dormant seeds – thus being more likely to burn – we expect that dormant seeds are more tolerant to heating than non-dormant seeds. We tested

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Seshu, D. V., and M. Dadlani. "Mechanism of seed dormancy in rice." Seed Science Research 1, no. 3 (1991): 187–94. http://dx.doi.org/10.1017/s0960258500000854.

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AbstractDormancy in rice (Oryza sativa L.) seed is imposed by certain physical and chemical factors associated with its covering structures, i.e.hull and pericarp. The nature of these germination blocks, their mode ofaction, and processes regulating the release of dormancy are not fully understood. Of nine rice cultivars studied, Ching-shi 15, Stejaree 45, PTB10, and Mahsuri are weakly dormant, and Bansphul, Benaful, Kataktara, Dular, and N22 are dormant. Release of seed dormancy in rice by various treatments, oxidative processes and enzymic changes associated with dormancy, and parallelism be

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Sari, Maryati, Satriyas Ilyas, M. Rahmad Suhartanto, and Abdul Qadir. "Perubahan Perilaku Dormansi selama Proses Desikasi pada Benih Kacang Bambara (Vigna subterranea L. Verdc.)." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 48, no. 1 (2020): 37–43. http://dx.doi.org/10.24831/jai.v48i1.29371.

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Bambara groundnut seeds often show unsynchronized and slow germination even though on newly harvested seeds. This might be due to the presence of seed dormancy. Therefore, the objective of this research was to obtain the information on seed dormancy and germination behaviour of bambara groundnut seeds during desiccation. The experiment was arranged in a nested design. Dormancy breaking treatments (untreated, mechanical scarification, soaking in 1% KNO3 for 2 hours, mechanical scarification followed by KNO3 soaking) were nested in each of the desiccation levels (fresh seeds with 54.7% moisture

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Geneve, Robert L., Sharon T. Kester, and Terriawkia A. Woods. "IS ETHYLENE ASSOCIATED WITH THE RELEASE FROM DORMANCY DURING CHILLING STRATIFICATION IN EASTERN REDBUD SEED (CERCIS CANADENSIS)?" HortScience 27, no. 6 (1992): 640d—640. http://dx.doi.org/10.21273/hortsci.27.6.640d.

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Ethephon and ethylene gas applied to intact Eastern redbud seed induced germination in 44 or 53% of dormant seed. However, endogenous ethylene production was not found to be correlated with the release from dormancy during chilling stratification (5°C). Seeds stratified in the presence of 6000 ppm 2.5-norbomadicne germinated at the same percentage as control seeds. Isolated embryos treated with 100 to 500 μM AOA or 1000 μM silver thiosulfate germinated at a slower rate than control seeds, but the release from dormancy during stratification was unaffected by either ethylene inhibitor. Ethylene

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Visser, Marjolein, and Amaury Beaugendre. "Conditional dormancy of Stipa lagascae (Poaceae) bulk-harvested on seed increase plots in South Tunisia: a reassessment and a surprise." Plant Ecology and Evolution 152, no. 3 (2019): 450–59. http://dx.doi.org/10.5091/plecevo.2019.1575.

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Background and aims – With the perspective to reseed degraded drylands, grass seeds are often stocked for several years. This common practice overlooks conditional dormancy and the necessity to preserve it. This paper reports on the germination ecology of Stipa lagascae Roem. & Schult., which is a circum-Mediterranean winter-growing bunch grass of high grazing value. However, the published record on its germination ecology is scarce and inconsistent.Methods – This record was reassessed through a series of germination trials in combination with dormancy breaking treatments on seeds that wer

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Auld, Tony D., David A. Keith, and Ross A. Bradstock. "Patterns in longevity of soil seedbanks in fire-prone communities of south-eastern Australia." Australian Journal of Botany 48, no. 4 (2000): 539. http://dx.doi.org/10.1071/bt99046.

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Seed burial in nylon mesh bags over a 2-year period was used to examine seed longevity patterns in 12 shrub and two graminoid species in fire-prone habitats around Sydney, south-eastern Australia. Most species released a large fraction of their annual seed-crop in a dormant state and all species showed evidence for some form of persistent seedbank. However, regressions of seed persistence over time were in most cases poor predictors of seed decay (9 of 14 study species). Considerable variation in the degree and pattern of seed longevity was apparent in the study species. Three functional group

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Pawłowski, Tomasz A., Barbara Bujarska-Borkowska, Jan Suszka, et al. "Temperature Regulation of Primary and Secondary Seed Dormancy in Rosa canina L.: Findings from Proteomic Analysis." International Journal of Molecular Sciences 21, no. 19 (2020): 7008. http://dx.doi.org/10.3390/ijms21197008.

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Temperature is a key environmental factor restricting seed germination. Rose (Rosa canina L.) seeds are characterized by physical/physiological dormancy, which is broken during warm, followed by cold stratification. Exposing pretreated seeds to 20 °C resulted in the induction of secondary dormancy. The aim of this study was to identify and functionally characterize the proteins associated with dormancy control of rose seeds. Proteins from primary dormant, after warm and cold stratification (nondormant), and secondary dormant seeds were analyzed using 2-D electrophoresis. Proteins that varied i

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Tabaković, Marijenka, Vesna Dragićević, Milan Brankov, et al. "Application of lavender and mint essential oils for improvement of alfalfa (Medicago sativa L.) seed properties." Journal on Processing and Energy in Agriculture 27, no. 1 (2023): 8–12. http://dx.doi.org/10.5937/jpea27-43109.

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Essential oils (EOs) are widely studied in agriculture. The study's objective was to examine the impact of EOs on alfalfa (Medicago sativa L.) seed dormancy. The four different varieties of alfalfa were used for the experiment (Zaječarka-83, Banatska-VS, K-28, Novosadska H-11). Two essential oils, lavender (Lavandula angustifolia Mill.) and peppermint (Mentha piperita L.) were applied at four concentrations:1%, 0.5%, 0.2%, and 0.02%, along with water as a control. Germination, dormant seeds and dead seeds were evaluated in a laboratory setting according to ISTA rules. The type of EOs had no di

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Thusithana, Vidushi, Sean M. Bellairs, and Christine S. Bach. "Seed germination of coastal monsoon vine forest species in the Northern Territory, Australia, and contrasts with evergreen rainforest." Australian Journal of Botany 66, no. 3 (2018): 218. http://dx.doi.org/10.1071/bt17243.

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Seed germination traits of seasonal rainforest species differ from permanently moist evergreen rainforest species due to the prolonged seasonal drought. We investigated whether seed germination traits used to categorise evergreen rainforest species into pioneer and climax guilds were applicable to seasonal rainforest species. Seed dormancy, light requirements for germination and seed storage types of five climax and thirteen pioneer species of a coastal vine thicket were studied. Results were compared with published studies of evergreen rainforest species. Evergreen rainforest pioneer species

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Glison, Nicolás, Luis Viega, and Pablo Speranza. "Differential incidence of the lemma on seed germination among different Paspalum dilatatum genotypes." Journal of Seed Science 39, no. 2 (2017): 133–41. http://dx.doi.org/10.1590/2317-1545v39n2169225.

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Abstract: Paspalum dilatatum Poir. is a promising perennial summer grass forage for temperate regions, but among other factors, slow stand establishment has hindered its adoption. One of the reasons may be seed dormancy. Intraspecific variability in seed dormancy has been reported in P. dilatatum, but the mechanisms underlying this variability remain unclear. In this paper, we focus on the role of seed external covering structures on germination, particularly the lemma. Seeds of apomictic and sexual biotypes of P. dilatatum were subjected to acid scarification and removal of the lemma to study

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Kissing Kucek, L., M. D. Azevedo, S. S. Eagen, et al. "Seed Dormancy in Hairy Vetch (Vicia villosa Roth) Is Influenced by Genotype and Environment." Agronomy 10, no. 11 (2020): 1804. http://dx.doi.org/10.3390/agronomy10111804.

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Seed dormancy complicates the agricultural use of many legume species. Understanding the genetic and environmental drivers of seed dormancy is necessary for advancing crop improvement for legumes, such as Vicia villosa. In this study, we quantify the magnitude of genetic and environmental effects on physical dormancy among 1488 maternal V. villosa plants from 18 diverse environments. Furthermore, we explore the relationship between physical dormancy and environmental conditions during seed development. Additive genetic variance (h2) accounted for 40% of the variance, while the growing environm

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Cao, Hong, Yi Han, Jingyi Li, et al. "Arabidopsis thaliana SEED DORMANCY 4-LIKE regulates dormancy and germination by mediating the gibberellin pathway." Journal of Experimental Botany 71, no. 3 (2019): 919–33. http://dx.doi.org/10.1093/jxb/erz471.

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Abstract The molecular mechanisms underlying seed dormancy and germination are not fully understood. Here, we show that Arabidopsis thaliana SEED DORMANCY 4-LIKE (AtSdr4L) is a novel specific regulator of dormancy and germination. AtSdr4L encodes a protein with an unknown biochemical function that is localized in the nucleus and is expressed specifically in seeds. Loss of function of AtSdr4L results in increased seed dormancy. The germination of freshly harvested seeds of the Atsdr4l mutant is insensitive to gibberellin (GA). After-ripened mutant seeds are hypersensitive to the GA biosynthesis

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Xiong, Renci, Ying Wang, Hanwen Wu, Yan Ma, Weili Jiang, and Xiaoyan Ma. "Seed treatments alleviate dormancy of field bindweed (Convolvulus arvensisL.)." Weed Technology 32, no. 5 (2018): 564–69. http://dx.doi.org/10.1017/wet.2018.46.

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AbstractField bindweed, a member of the Convolvulaceae family, is a problematic perennial weed in cotton fields and orchards in northwest China. The species exhibits strong seed dormancy, causing delayed germination. A clear understanding of the mechanisms involved in alleviating seed dormancy is important for effective plant propagation and successful management of field bindweed. Experiments were conducted to investigate seed germination and radicle growth of field bindweed by breaking seed dormancy using mechanical scarification, sulfuric acid, hot-water scarification, cold stratification,

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Silveira, Fernando A. O., Rafaella C. Ribeiro, Denise M. T. Oliveira, G. Wilson Fernandes, and José P. Lemos-Filho. "Evolution of physiological dormancy multiple times in Melastomataceae from Neotropical montane vegetation." Seed Science Research 22, no. 1 (2011): 37–44. http://dx.doi.org/10.1017/s0960258511000286.

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AbstractWe investigated seed dormancy among species of Melastomataceae from Neotropical montane vegetation of Brazil. Four out of 50 studied species had dormant seeds:Miconia corallina(Miconieae), Tibouchina cardinalis(Melastomeae), Comolia sertularia(Melastomeae) andChaetostoma armatum(Microlicieae). For these four species, germinability of seeds collected in different years was always < 10% and the percentages of embryoless seeds and non-viable embryos were both insufficient to explain low or null germinability. This is the first unequivocal report of seed dormancy in tropical Melastomata

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Visser, Marjolein, and Amaury Beaugendre. "Conditional dormancy of Stipa lagascae (Poaceae) bulk-harvested on seed increase plots in South Tunisia: a reassessment and a surprise." Plant Ecology and Evolution 152, no. (3) (2019): 450–59. https://doi.org/10.5091/plecevo.2019.1575.

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<b>Background and aims</b> – With the perspective to reseed degraded drylands, grass seeds are often stocked for several years. This common practice overlooks conditional dormancy and the necessity to preserve it. This paper reports on the germination ecology of <em>Stipa lagascae</em> Roem. & Schult., which is a circum-Mediterranean winter-growing bunch grass of high grazing value. However, the published record on its germination ecology is scarce and inconsistent.<b>Methods</b> – This record was reassessed through a series of germination trials in combination with dormancy breaking treat

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Park, Kyungtae, Hamin Lee, Bo-Kook Jang, and Ju-Sung Cho. "Dormancy Characteristics of Euphorbia maculata L. Seeds and Strategies for Their Effective Germination." Horticulturae 9, no. 9 (2023): 990. http://dx.doi.org/10.3390/horticulturae9090990.

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Euphorbia maculata L. has been confirmed to have functional properties, including anticytotoxic, anti-inflammatory, and antioxidative effects. However, studies on the dormancy and germination of its seeds for cultivation purposes are lacking. The potential of E. maculata as a valuable plant species has not been fully realized due to the lack of understanding of its seed dormancy and germination characteristics. E. maculata seeds were collected and germination tests were performed at various temperatures to determine their dormant state. Next, seeds were stratified with various temperatures, an

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Leon, Ramon G., Diane C. Bassham, and Micheal D. K. Owen. "Inheritance of deep seed dormancy and stratification-mediated dormancy alleviation in Amaranthus tuberculatus." Seed Science Research 16, no. 3 (2006): 193–202. http://dx.doi.org/10.1079/ssr2006250.

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Amaranthus tuberculatusis a weed species that has shifted emergence patterns over the past few years, presumably due to changes in seed dormancy in response to selection in agricultural fields. Although it is recognized that the seed dormancy phenotype is greatly affected by the environment, it is also acknowledged that the genotype plays a significant role. However, the importance of the genotype in determining intra-population seed dormancy variability, and the effect on emergence patterns, is not well understood. The objective of the present study was to determine the importance of the geno

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Baskin, Carol C., and Jerry M. Baskin. "Underdeveloped embryos in dwarf seeds and implications for assignment to dormancy class." Seed Science Research 15, no. 4 (2005): 357–60. http://dx.doi.org/10.1079/ssr2005224.

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Studies were conducted to determine if small embryos (i.e. low embryo length:seed length ratio) in mature dwarf seeds (0.2–2 mm) are underdeveloped. In this case, they would grow (inside the seed) prior to germination, and seeds would have morphological or morphophysiological dormancy. Prior to radicle emergence, embryo length in seeds of Drosera anglica (Droseraceae), Campanula americana, Lobelia appendiculata, L. spicata (Campanulaceae) and Sabatia angularis (Gentianaceae) increased 0, 103, 182, 83 and 57%, respectively. Since embryo growth did not occur in seeds of D. anglica prior to germi

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Dunbabin, Matthew T., and P. S. Cocks. "Ecotypic variation for seed dormancy contributes to the success of capeweed (Arctotheca calendula) in Western Australia." Australian Journal of Agricultural Research 50, no. 8 (1999): 1451. http://dx.doi.org/10.1071/ar99001.

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The seed dormancy characteristics of 2 capeweed [Arctotheca calendula (L.) Levyns] ecotypes from Western Australia were studied to determine aspects of seed dormancy that contribute to the success of this species in southern Australia. Short- and long-term dormancy pattern of buried and soil surface seed, effect of summer temperatures on afterripening, and effect of temperature on seed germination were investigated using seed produced in a common environment. There were large differences in the seed dormancy pattern of the 2 ecotypes studied. On the soil surface, >95% of seed of the Mt Bark

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Baskin, Carol C., and Jerry M. Baskin. "Role of temperature and light in the germination ecology of buried seeds of weedy species of disturbed forests. II. Erechtites hieracifolia." Canadian Journal of Botany 74, no. 12 (1996): 2002–5. http://dx.doi.org/10.1139/b96-240.

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At maturity in September, about half the seeds (achenes) of Erechtites hieracifolia (Asteraceae) collected in Kentucky were dormant (did not germinate at any test condition), whereas the others were conditionally dormant (germinated only at a narrow range of test conditions). Seeds sown on top of soil in an unheated greenhouse in September failed to germinate in autumn because temperatures were below those required for germination; however, they germinated at comparable temperatures the following spring. Seeds buried in soil in September 1987 and exposed to natural seasonal temperature changes

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Alvarado, Veria, and Kent J. Bradford. "Hydrothermal time analysis of seed dormancy in true (botanical) potato seeds." Seed Science Research 15, no. 2 (2005): 77–88. http://dx.doi.org/10.1079/ssr2005198.

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As seed dormancy is released within a seed population, both the rate and percentage of germination increase progressively with increasing dose of a dormancy-breaking treatment or condition. Population-based models can account for this behaviour on the basis of shifting response thresholds as dormancy is alleviated. In particular, hydrothermal time analysis of germination sensitivity to water potential (Ψ) and temperature (T) can describe these features of seed behaviour. We used the hydrothermal time model to analyse the effects of dormancy-breaking treatments on germination of dormant true (b

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Hou, J. Q., and G. M. Simpson. "Effects of immersing dry seeds in alkaline solutions on seed dormancy and water uptake in wild oat (Avena fatua)." Canadian Journal of Plant Science 74, no. 1 (1994): 19–24. http://dx.doi.org/10.4141/cjps94-005.

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Effects of immersing dry seeds in KOH and NaOH solutions on seed dormancy and water uptake were studied in three dormant lines of wild oat (Avena fatua L.). KOH was more effective than NaOH in breaking dormancy. Maximum dormancy-breaking effect of 5.3 N KOH could be achieved with a 10- or 15-min treatment. Increase in treatment time did not necessarily increase germination; rather, it caused damage to the seeds. For 10-min treatment, 5.3 and 7.6 N KOH solutions were more effective than 3 and 9.8 N. Genetic lines responded differently to the KOH treatment. Initial rate and amount of water uptak

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Katsuya-Gaviria, Kai, Elena Caro, Néstor Carrillo-Barral, and Raquel Iglesias-Fernández. "Reactive Oxygen Species (ROS) and Nucleic Acid Modifications during Seed Dormancy." Plants 9, no. 6 (2020): 679. http://dx.doi.org/10.3390/plants9060679.

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The seed is the propagule of higher plants and allows its dissemination and the survival of the species. Seed dormancy prevents premature germination under favourable conditions. Dormant seeds are only able to germinate in a narrow range of conditions. During after-ripening (AR), a mechanism of dormancy release, seeds gradually lose dormancy through a period of dry storage. This review is mainly focused on how chemical modifications of mRNA and genomic DNA, such as oxidation and methylation, affect gene expression during late stages of seed development, especially during dormancy. The oxidatio

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Hasimi, Muhammad Hasbi, Eva Agustina, Nur Yohaniz Miskiah, Muhammad Ihsan Fadhiel, Nadia Nadia, and Gani Jawak. "Pematahan dormansi benih cabai lokal tiung tanjung asal tabalong Kalimantan Selatan." Jurnal AGRO 11, no. 1 (2024): 133–46. http://dx.doi.org/10.15575/35866.

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Tiung Tanjung seeds pepper are believed to have dormant properties that can be detrimental to farmers during planting. The aim of this study was to find out the correct method of breaking the dormancy on Tiung Tanjung pepper. The study was designed with a two-stage nested design, the first stage was the seed storage time of 1, 3, 5, 7, 9, and 11 weeks. The second stage was a dormant breakdown method consisting of 8 treatments namely control, aquades, warm water (40 °C), ionic water, IAA 100 ppm, IAA 200 ppm, KNO3 0,1% and KNO3 0.5%. Each unit of experiment used 3 repetitions with 25 seeds plan

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Gallagher, Robert S., Kathryn J. Steadman, and Andrew D. Crawford. "Alleviation of dormancy in annual ryegrass (Lolium rigidum) seeds by hydration and after-ripening." Weed Science 52, no. 6 (2004): 968–75. http://dx.doi.org/10.1614/ws-04-075r.

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The effect of hydration (priming) treatment on dormancy release in annual ryegrass seeds from two populations was investigated. Hydration duration, number, and timing with respect to after-ripening were compared in an experiment involving 15 treatment regimens for 12 wk. Seeds were hydrated at 100% relative humidity for 0, 2, or 10 d at Weeks 1, 6, or 12 of after-ripening. Dormancy status was assessed after each hydration treatment by measuring seed germination at 12-hourly alternating 25/15 C (light/dark) periods using seeds directly from the hydration treatment and seeds subjected to 4 d pos

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Hawkins, K. K., P. Allen, and S. Meyer. "Secondary dormancy of seeds in relation to the Bromus tectorum–Pyrenophora semeniperda pathosystem." Plant Protection Science 49, Special Issue (2013): S11—S14. http://dx.doi.org/10.17221/30/2013-pps.

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Bromus tectorum is a highly invasive annual grass. The fungal pathogen Pyrenophora semeniperda can kill a large fraction of B. tectorum seeds. Outcomes in this pathosystem are often determined by the speed of seed germination. In this paper we extend previous efforts to describe the pathosystem by characterising secondary dormancy acquisition of B. tectorum. In the laboratory approximately 80% of seeds incubated at &ndash;1.0 MPa became dormant. In the field, seeds were placed in the seed bank in late autumn, retrieved monthly and dormancy status determined. The field study confirmed the l

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Turner, S. R., D. J. Merritt, J. M. Baskin, C. C. Baskin, and K. W. Dixon. "Combinational dormancy in seeds of the Western Australian endemic species Diplopeltis huegelii (Sapindaceae)." Australian Journal of Botany 54, no. 6 (2006): 565. http://dx.doi.org/10.1071/bt05156.

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Seeds of the endemic Western Australian species Diplopeltis huegelii Endl. were successfully germinated after the presence of combinational dormancy was identified, following the observation of selected seed characteristics. D. huegelii seeds were found to have large, fully developed, peripheral coiled embryos (with no endosperm) that are 7–8 mm long when uncoiled. Seed-coat dormancy was overcome by dipping seeds in hot water for ≥15 s, but seeds also required a period of after-ripening before they would germinate readily. After-ripening occurred while intact seeds were stored dry at ambient l

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Kitchen, Stanley G., and Susan E. Meyer. "Seed Germination of Intermountain Penstemons as Influenced by Stratification and GA3 Treatments." Journal of Environmental Horticulture 9, no. 1 (1991): 51–56. http://dx.doi.org/10.24266/0738-2898-9.1.51.

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Abstract Propagation of the genus Penstemon for use in landscape horticulture has been handicapped by a lack of understanding of seed dormancy and a practical method for breaking dormancy for numerous species. The extent of dormancy in seeds of 27 wild populations of Penstemon representing 16 Intermountain species was investigated by subjecting seeds to stratification (moist prechilling) of 2 to 16 weeks at 2°C (36°F) and varying concentrations of gibberellic acid (GA3). Germination varied from 0 to 88% for non-treated seeds and from 13 to 100% for seeds treated with 250 ppm GA3. Collections f

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Lefebvre, Maxime, Maryse L. Leblanc, and Alan K. Watson. "Seed Dormancy and Seed Morphology Related to Weed Susceptibility to Biofumigation." Weed Science 66, no. 2 (2017): 199–214. http://dx.doi.org/10.1017/wsc.2017.66.

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Biofumigation is practiced to control soilborne pests and weeds in agronomic fields. The objectives of this research were to assess the dose response of weed seeds to Indian mustard biofumigation and associate responses to seed dormancy state, initial dormancy, and seed parameters. A petri dish biofumigation methodology was developed to expose seeds of common lambsquarters, bird vetch, wild carrot, common ragweed, green foxtail, velvetleaf, hairy galinsoga, and red clover to allelochemicals produced after rehydrating 0 (control), 1.94, 2.90, 5.81, 11.61, and 17.41 mg cm−2of dried mustard powde

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Liyanage, Ganesha S., and Mark K. J. Ooi. "Do dormancy-breaking temperature thresholds change as seeds age in the soil seed bank?" Seed Science Research 27, no. 1 (2016): 1–11. http://dx.doi.org/10.1017/s0960258516000271.

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AbstractIn fire-prone ecosystems, many species regenerate after fire from persistent soil seed banks. Species with physically dormant (PY) seeds have dormancy broken by fire-related heat. The magnitude of post-fire recruitment, to predict response to varying fire severity, is commonly estimated by testing dormancy-breaking temperature thresholds of fresh PY seeds. However, seeds spend years in the soil during the inter-fire period, and determining whether dormancy-breaking thresholds change over time is essential to accurately predict population persistence. Germination of four south-eastern A

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KHALADI, MOHAMED, MARC JARRY, and MARTINE HOSSAERT-MCKEY. "A MODEL FOR ANNUAL PLANT DYNAMICS WITH SEED BANK AND DENSITY-DEPENDENT EFFECTS." Journal of Biological Systems 03, no. 02 (1995): 531–41. http://dx.doi.org/10.1142/s0218339095000496.

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A model is proposed for the population dynamics of an annual plant with a seed bank (i.e. in which a proportion of seeds remain dormant for at least one year). In this model, demographic parameters (dormancy and germination rate) of the seeds of the year are different from those of the seeds of the seed bank. First, a simple linear matrix model is deduced from the life cycle graph and a more complicated model is built by introducing density dependence effect. The obtained system, nonlinear with delay, can be simplified by a change of variables. A non-trivial fixed point of this system is obtai

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