Advanced search
2 files | 535.65 KB Add to list

The incidence, field performance and heritability of non-dormant seeds in white clover (Trifolium repens L.)

Bram D'hondt (UGent) , Rein Brys (UGent) and Maurice Hoffmann (UGent)
(2010) SEED SCIENCE RESEARCH. 20(3). p.169-177
Author
Organization
Abstract
Mature seeds of many legume species are normally characterized by water-impermeable seed coats, a form of physical dormancy. However, observations have suggested that the incidence of mature but permeable (non-dormant) seeds is sometimes substantial. Yet, the ecological processes associated with this non-dormancy have received little attention by plant ecologists. In white clover (Trifolium repens), we therefore studied: (1) the occurrence of initially permeable seeds in wild populations; (2) the relative performance of non-dormant and dormant seeds in plant establishment and reproduction in a field-sown experiment; and (3) the extent to which the trait is affected by humidity and plant genotype in a greenhouse experiment. No less than 35% of all viable seeds from the wild populations proved to be water permeable at maturity. The proportion of permeable seeds within inflorescences ranged from 0 to 100%. In the field-sown experiment, autumn-germinated non-dormant seeds had almost equally good chances of establishing as spring-germinated dormant seeds. Due to a marked head start in growth, the former yielded more flowers (and thus seeds) in the first flowering season. However, the greenhouse experiment proved that variation in the proportion of permeable seed between inflorescences represented a plastic response to humidity conditions during seed ripening, rather than variation among clones (broad-sense heritability <= 0.025). Thus the trait is not easily subject to selection.
Keywords
germination, hardseededness, genotype by environment, Fabaceae, clonal repeatability, water-impermeability, softseededness, GRAZED HILL PASTURES, SUBTERRANEAN CLOVER, REPRODUCTIVE STRATEGIES, SEEDLING APPEARANCE, HARD SEED, DORMANCY, SURVIVAL, LEGUMINOSAE, GERMINATION, DISPERSAL

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 294.13 KB
  • D hondt SSR 2010.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 241.52 KB

Citation

Please use this url to cite or link to this publication:

MLA
D’hondt, Bram, et al. “The Incidence, Field Performance and Heritability of Non-Dormant Seeds in White Clover (Trifolium Repens L.).” SEED SCIENCE RESEARCH, vol. 20, no. 3, 2010, pp. 169–77.
APA
D’hondt, B., Brys, R., & Hoffmann, M. (2010). The incidence, field performance and heritability of non-dormant seeds in white clover (Trifolium repens L.). SEED SCIENCE RESEARCH, 20(3), 169–177.
Chicago author-date
D’hondt, Bram, Rein Brys, and Maurice Hoffmann. 2010. “The Incidence, Field Performance and Heritability of Non-Dormant Seeds in White Clover (Trifolium Repens L.).” SEED SCIENCE RESEARCH 20 (3): 169–77.
Chicago author-date (all authors)
D’hondt, Bram, Rein Brys, and Maurice Hoffmann. 2010. “The Incidence, Field Performance and Heritability of Non-Dormant Seeds in White Clover (Trifolium Repens L.).” SEED SCIENCE RESEARCH 20 (3): 169–177.
Vancouver
1.
D’hondt B, Brys R, Hoffmann M. The incidence, field performance and heritability of non-dormant seeds in white clover (Trifolium repens L.). SEED SCIENCE RESEARCH. 2010;20(3):169–77.
IEEE
[1]
B. D’hondt, R. Brys, and M. Hoffmann, “The incidence, field performance and heritability of non-dormant seeds in white clover (Trifolium repens L.),” SEED SCIENCE RESEARCH, vol. 20, no. 3, pp. 169–177, 2010.
@article{950557,
  abstract     = {Mature seeds of many legume species are normally characterized by water-impermeable seed coats, a form of physical dormancy. However, observations have suggested that the incidence of mature but permeable (non-dormant) seeds is sometimes substantial. Yet, the ecological processes associated with this non-dormancy have received little attention by plant ecologists. In white clover (Trifolium repens), we therefore studied: (1) the occurrence of initially permeable seeds in wild populations; (2) the relative performance of non-dormant and dormant seeds in plant establishment and reproduction in a field-sown experiment; and (3) the extent to which the trait is affected by humidity and plant genotype in a greenhouse experiment. No less than 35% of all viable seeds from the wild populations proved to be water permeable at maturity. The proportion of permeable seeds within inflorescences ranged from 0 to 100%. In the field-sown experiment, autumn-germinated non-dormant seeds had almost equally good chances of establishing as spring-germinated dormant seeds. Due to a marked head start in growth, the former yielded more flowers (and thus seeds) in the first flowering season. However, the greenhouse experiment proved that variation in the proportion of permeable seed between inflorescences represented a plastic response to humidity conditions during seed ripening, rather than variation among clones (broad-sense heritability <= 0.025). Thus the trait is not easily subject to selection.},
  author       = {D'hondt, Bram and Brys, Rein and Hoffmann, Maurice},
  issn         = {0960-2585},
  journal      = {SEED SCIENCE RESEARCH},
  keywords     = {germination,hardseededness,genotype by environment,Fabaceae,clonal repeatability,water-impermeability,softseededness,GRAZED HILL PASTURES,SUBTERRANEAN CLOVER,REPRODUCTIVE STRATEGIES,SEEDLING APPEARANCE,HARD SEED,DORMANCY,SURVIVAL,LEGUMINOSAE,GERMINATION,DISPERSAL},
  language     = {eng},
  number       = {3},
  pages        = {169--177},
  title        = {The incidence, field performance and heritability of non-dormant seeds in white clover (Trifolium repens L.)},
  url          = {http://dx.doi.org/10.1017/S0960258510000152},
  volume       = {20},
  year         = {2010},
}

Altmetric
View in Altmetric
Web of Science
Times cited: