Seed Dormancy
Seed Dormancy - Related Videos
07:03
Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions
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Cited by 5 •
2016
Here we present a protocol for assessing seed survivorship, germination and dormancy under field conditions using buried, labeled seed strips and tetrazolium chloride (TZ) viability testing.
09:14
An In Vitro System to Study Tumor Dormancy and the Switch to Metastatic Growth
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Cited by 39 •
2011
A modified 3-D in vitro system is presented in which growth characteristics of several tumor cell lines in reconstituted basement membrane correlate with the dormant or proliferative behavior of the tumor cells at a metastatic secondary site in vivo.
08:48
An In Vitro Dormancy Model of Estrogen-sensitive Breast Cancer in the Bone Marrow: A Tool for Molecular Mechanism Studies and Hypothesis Generation
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Cited by 11 •
2015
We developed an in vitro model of dormancy in the bone marrow for estrogen-sensitive breast cancer cells. The goal of this protocol is to demonstrate use of the model for the study of the molecular and cellular biology of dormancy and for generation of hypotheses for subsequent testing in vivo.
02:33
Seed Structure and Early Development of the Sporophyte
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2020
Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo. The embryo contains a double set of chromosomes, one set from each parent. Fertilization of the haploid egg by the haploid sperm gives rise to the zygote, which develops into the embryo. The endosperm is a...
08:52
A Seed Coat Bedding Assay to Genetically Explore In Vitro How the Endosperm Controls Seed Germination in Arabidopsis thaliana
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Cited by 21 •
2013
We present the procedure to assemble a seed coat bedding assay (SCBA) from Arabidopsis thaliana seeds. The SCBA was shown to be a powerful tool to explore genetically and in vitro how the endosperm controls seed germination in dormant seeds and in response to light cues. The SCBA is in principle applicable under any situation where the endosperm is suspected to influence embryonic growth.
FAQs
Abscisic acid, or ABA, is one hormonal control associated with keeping a viable seed from responding immediately to favorable conditions. Its regulation interacts with structural barriers and embryo development rather than acting in isolation. Environmental cues can alter this control, helping align germination with a season when emergence is more likely to support plant survival.
Seed coats and embryos contribute different constraints. A restrictive seed coat acts as a physical barrier, whereas an immature embryo represents a developmental limitation within the seed. Distinguishing these mechanisms matters because dormancy reflects interacting barriers, not a single universal cause. This distinction helps explain why plant species can respond differently to environmental cues.
Moisture, temperature, light, and seasonal chilling can function as release cues, but their significance depends on the controls present in the seed. These signals may modify physical or physiological restrictions and change when germination occurs. Consequently, shifts in environmental timing can influence emergence and contribute to plant responses to climate variability.
Evaluation should consider whether moisture, temperature, light, or seasonal chilling has changed the seed’s controlling barriers. These factors can alter physical restrictions, embryo-related limitations, or hormonal regulation. Considering them together is important because a seed’s response reflects interacting controls, and a single apparently favorable condition may not be sufficient to produce emergence.
Seed Dormancy connects seed emergence with environmental timing, making it relevant to where plants occur and how communities regenerate. Germination patterns can reflect the availability of release cues such as moisture, temperature, light, or chilling rather than favorable conditions at one moment alone. This perspective helps interpret changes in plant communities across environments.
Understanding dormancy informs habitat restoration, conservation of native species, agriculture, and invasive-plant management. In these settings, researchers and practitioners can account for how environmental cues influence emergence and regeneration. The resulting information supports interpretation of plant establishment, planning for native community recovery, and management decisions where the timing of germination affects ecological or agricultural outcomes.