Seed Information Database

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Storage Behaviour  1000 Seed Weight  Oil Content  Protein Content  Seed Dispersal  Germination  Literature Cited

APG Clade: EUDICOTS - CORE EUDICOTS
APG Order: Caryophyllales
APG Family: POLYGONACEAE
Kew Family: POLYGONACEAE
Genus: Rumex
Species Epithet: obtusifolius
Species Author: L.
Life Form: hemicr.


Storage Behaviour

Storage Behaviour: Orthodox
Storage Conditions: Long-term storage under IPGRI preferred conditions at RBG Kew, WP. Oldest collection 2 years

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1000 Seed Weight

Average 1000 Seed Weight(g): 1.5
Details of Component Seed Weights:
  1. 1.2128; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  2. 2.012; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  3. 1.372; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  4. 1.24; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  5. 1.1908; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  6. 1.7352; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  7. 1.237; (Mazer, 1989); Diaspore; seed plus associated protective structure
  8. 1.1; (Grime et al., 1981); Germinule; Seed mc not stated, but weight is likely to refer to air-dry seed.
  9. 1.4; (Jones & Earle, 1966); Seed+pericarp; Seed mc not stated, but weight is likely to refer to air-dry seed.
  10. 1.237; (Mazer, 1989); Seed
  11. 1.01; (Hayashi, 1977); Seed; Based upon the average weight of 5 batches of 100 seeds; weight refers to air-dry seed.
  12. 1.27; (Milberg et al., 2000); Seed; Based upon the average weight of 20 batches of a known quantity of air-dry seeds.
  13. 1.3; (Baker Seed Herbarium, California); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  14. 1.5; (Baker Seed Herbarium, California); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  15. 1.64; (Baker Seed Herbarium, California); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  16. 3.32; (Matlack, 1987); Fruit; Based on mean weight of 10 diaspores; seed mc not stated, but weight is likely to refer to air-dry diaspores.
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Seed Dispersal

  1. Wind; Assumption based upon diaspore morphology; (Hayashi, 1977)
  2. Wind; Diaspore is blown by wind; Method not stated; (Matlack, 1987); Diaspore=fruit. Fruit is finned.
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Germination

  1. 95 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 25/10C (Therm 8/16); 42 days; (RBG Kew, Wakehurst Place)
  2. 90 % germination (seeds sown: 10); pre-sowing treatments: mechanical manipulation (other covering structure (not seed coat) removed or partially removed. covering structure removed); germination medium: 1% agar; germination conditions: light 12/12; 26C; (RBG Kew, Wakehurst Place)
  3. 94 % germination (seeds sown: 51); germination medium: 1% agar; germination conditions: light 8/16; 15C; 43 days; (RBG Kew, Wakehurst Place)
  4. 94 % germination (seeds sown: 51); germination medium: 1% agar; germination conditions: light 8/16; 20C; 43 days; (RBG Kew, Wakehurst Place)
  5. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 25/10C (Therm 12/12); 4 days; (RBG Kew, Wakehurst Place)
  6. 94 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 23/9C (Therm 12/12); (RBG Kew, Wakehurst Place)
  7. 50 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 20C; 42 days; (RBG Kew, Wakehurst Place)
  8. 90 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 42 days; (RBG Kew, Wakehurst Place)
  9. 96 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 26C; (RBG Kew, Wakehurst Place)
  10. 98 % germination (seeds sown: 52); germination medium: 1% agar; germination conditions: light 8/16; 10C; 63 days; (RBG Kew, Wakehurst Place)
  11. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 20C; 4 days; (RBG Kew, Wakehurst Place)
  12. 90 % germination (seeds sown: 49); germination medium: 1% agar; germination conditions: light 12/12; 25/10C (Therm 12/12); 42 days; (RBG Kew, Wakehurst Place)
  13. 94 % germination (seeds sown: 53); germination medium: 1% agar; germination conditions: light 12/12; 20C; 42 days; (RBG Kew, Wakehurst Place)
  14. 98 % germination (seeds sown: 52); germination medium: 1% agar; germination conditions: light 8/16; 20/5C (Therm 8/16); 42 days; (RBG Kew, Wakehurst Place)
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Oil Content

Average of Oil Content (%): 2.8
Details of Component Oil Contents:
  1. 2.8; (Jones & Earle, 1966); Entire seed/nut; Moisture content not stated
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Protein Content

Average of Protein Content (%): 12.7
Details of Component Protein Contents:
  1. 12.7; (Jones & Earle, 1966); Entire seed/nut; Moisture content not stated
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Literature Cited
  1. Grime, J.P., Mason, G., Curtis, A.A., Rodman, J., Band, S.R., Mowforth, M.A.G., Neal, A.M. and Shaw, S. 1981. A comparative study of germination characteristics in a local flora. Journal of Ecology, 69:1017-1059.
  2. Jones, Q. and Earle, F.R. 1966. Chemical analyses of seeds II: oil and protein content of 759 species. Economic Botany, 20:127-155.
  3. Mazer, S. 1989. Ecological, taxonomic, and life history correlates of seed mass among Indiana dunes Angiosperms. Supplement: species list, untransformed seed mass, seed mass class and ecological data associated with each species. Ecological Monographs, 59.
  4. Hayashi, I. 1977. Secondary succession of herbaceous communities in Japan. Japanese Journal of Ecology, 27:191-200.
  5. Milberg, P., Andersson, L. and Thompson, K. 2000. Large-seeded species are less dependent on light for germination than small-seeded ones. Seed Science Research, 10:99-104.
  6. RBG Kew, Wakehurst Place.
  7. Baker Seed Herbarium, California.
  8. Matlack, G.R. 1987. Diaspore size, shape, and fall behavior in wind-dispersed plant species. American Journal of Botany, 74:1150-1160.
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