ArticleAnnals of botany2012
Co-adaptation of seed dormancy and flowering time in the arable weed Capsella bursa-pastoris (shepherd's purse).
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 58 citations in OpenAlex.
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- RicePlant physiology · 2020Article
- Phenotypic Trait Variation as a Response to Altitude-Related Constraints in Arabidopsis Populations.Frontiers in plant science · 2019Article
- Two Contrasting Patterns and Underlying Genes for Coadaptation of Seed Dormancy and Flowering Time in Rice.Scientific reports · 2018Article
- Antibiotics impact plant traits, even at small concentrations.AoB PLANTS · 2017Article
- DELAY OF GERMINATION1 (DOG1) regulates both seed dormancy and flowering time through microRNA pathways.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Flowering time and seed dormancy control use external coincidence to generate life history strategy.eLife · 2015Article
- Understanding polysaccharide production and properties using seed coat mutants: future perspectives for the exploitation of natural variants.Annals of botany · 2014Review
- The microbiome: stress, health and disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2014Review
- A mathematical model of mucilage expansion in myxospermous seeds of Capsella bursa-pastoris (shepherd's purse).Annals of botany · 2012Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsThe duration of the plant life cycle is an important attribute that determines fitness and coexistence of weeds in arable fields. It depends on the timing of two key life-history traits: time from seed dispersal to germination and time from germination to flowering. These traits are components of the time to reproduction. Dormancy results in reduced and delayed germination, thus increasing time to reproduction. Genotypes in the arable seedbank predominantly have short time to flowering. Synergy between reduced seed dormancy and reduced flowering time would create stronger contrasts between genotypes, offering greater adaptation in-field. Therefore, we studied differences in seed dormancy between in-field flowering time genotypes of shepherd's purse.
methodsGenotypes with early, intermediate or late flowering time were grown in a glasshouse to provide seed stock for germination tests. Secondary dormancy was assessed by comparing germination before and after dark-incubation. Dormancy was characterized separately for seed myxospermy heteromorphs, observed in each genotype. Seed carbon and nitrogen content and seed mass were determined as indicators of seed filling and resource partitioning associated with dormancy. KEY
resultsAlthough no differences were observed in primary dormancy, secondary dormancy was weaker among the seeds of early-flowering genotypes. On average, myxospermous seeds showed stronger secondary dormancy than non-myxospermous seeds in all genotypes. Seed filling was similar between the genotypes, but nitrogen partitioning was higher in early-flowering genotypes and in non-myxospermous seeds.
conclusionsIn shepherd's purse, early flowering and reduced seed dormancy coincide and appear to be linked. The seed heteromorphism contributes to variation in dormancy. Three functional groups of seed dormancy were identified, varying in dormancy depth and nitrate response. One of these groups (FG-III) was distinct for early-flowering genotypes. The weaker secondary dormancy of early-flowering genotypes confers a selective advantage in arable fields.
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