Seed Information Database

Search Results

Storage Behaviour  1000 Seed Weight  Seed Dispersal  Germination  Literature Cited

APG Clade: EUDICOTS - CORE EUDICOTS - ASTERIDS - EUASTERIDS II
APG Order: Asterales
APG Family: ASTERACEAE
Kew Family: COMPOSITAE
Genus: Lactuca
Species Epithet: serriola
Species Author: L.
Life Form: ther.


Storage Behaviour

Storage Behaviour: Orthodox
Storage Conditions: Seeds survive after 5 years open storage at room temperature (Comes et al., 1978); long-term storage under IPGRI preferred conditions at VGB Wellesbourne and RBG Kew, WP. Oldest collection 16 years;germination change 100 to 100%, 14 years, 1 collection

Top  Interpreting the storage behaviour data

1000 Seed Weight

Average 1000 Seed Weight(g): 0.58
Details of Component Seed Weights:
  1. 0.533; (Milberg et al., 2000); Seed; Based upon the average weight of 20 batches of a known quantity of air-dry seeds.
  2. 0.0436; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  3. 0.4216216; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  4. 0.4572; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  5. 0.4848; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  6. 0.4972; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  7. 0.508871; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  8. 0.538; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  9. 0.5406667; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  10. 0.5436; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  11. 0.5504; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  12. 0.5548; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  13. 0.5552; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  14. 0.5712; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  15. 0.5768; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  16. 0.6008; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  17. 0.606; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  18. 0.6272; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  19. 0.6492; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  20. 0.6752; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  21. 0.688; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  22. 0.7104; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  23. 0.7396; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  24. 0.772; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  25. 0.8628; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  26. 0.8808; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  27. 0.9628; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  28. 0.383; (Baker Seed Herbarium, California); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  29. 0.45; (Baker Seed Herbarium, California); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  30. 0.37; (Thompson et al., 2001); Seed
Top  Interpreting the seed weight data

Seed Dispersal

  1. Wind; Diaspore is blown by wind; Assumption based upon diaspore morphology; (Rutledge & McLendon, sine anno); Diaspore=seed. The seed has a pappus.
  2. Wind; Diaspore is blown by wind; Assumption based upon diaspore morphology; (McIntyre et al., 1995)
Top  Interpreting the seed dispersal data

Germination

  1. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  2. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 20C; 7 days; (RBG Kew, Wakehurst Place)
  3. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 10C; 14 days; (RBG Kew, Wakehurst Place)
  4. 90 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 25C; 21 days; (RBG Kew, Wakehurst Place)
  5. 90 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 20C; 7 days; (RBG Kew, Wakehurst Place)
  6. 60 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  7. 100 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  8. 100 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 20C; 7 days; (RBG Kew, Wakehurst Place)
  9. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 10C; 7 days; (RBG Kew, Wakehurst Place)
  10. 95 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  11. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 25C; 7 days; (RBG Kew, Wakehurst Place)
  12. 95 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 10C; 14 days; (RBG Kew, Wakehurst Place)
  13. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 15C; 14 days; (RBG Kew, Wakehurst Place)
  14. 95 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 20C; 14 days; (RBG Kew, Wakehurst Place)
  15. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  16. 98 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 20C; 7 days; (RBG Kew, Wakehurst Place)
  17. 98 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 25C; 7 days; (RBG Kew, Wakehurst Place)
  18. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 11C; 7 days; (RBG Kew, Wakehurst Place)
  19. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 16C; 7 days; (RBG Kew, Wakehurst Place)
  20. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 26C; 7 days; (RBG Kew, Wakehurst Place)
  21. 84 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 15C; 42 days; (RBG Kew, Wakehurst Place)
  22. 88 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 20C; 35 days; (RBG Kew, Wakehurst Place)
  23. 83 % germination (seeds sown: 52); germination medium: 1% agar; germination conditions: light 8/16; 15C; 42 days; (RBG Kew, Wakehurst Place)
  24. 92 % germination (seeds sown: 52); germination medium: 1% agar; germination conditions: light 8/16; 20C; 42 days; (RBG Kew, Wakehurst Place)
  25. 72 % germination (seeds sown: 25); germination medium: 1% agar; germination conditions: light 8/16; 20C; 77 days; (RBG Kew, Wakehurst Place)
  26. 91 % germination (seeds sown: 22); germination medium: 1% agar; germination conditions: light 8/16; 25C; 70 days; (RBG Kew, Wakehurst Place)
  27. 83 % germination (seeds sown: 24); germination medium: 1% agar; germination conditions: light 8/16; 15C; 48 days; (RBG Kew, Wakehurst Place)
  28. 88 % germination (seeds sown: 48); germination medium: 1% agar; germination conditions: light 8/16; 15C; 28 days; (RBG Kew, Wakehurst Place)
  29. 92 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 20C; 28 days; (RBG Kew, Wakehurst Place)
  30. 100 % germination (seeds sown: 100); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  31. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  32. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 10C; 7 days; (RBG Kew, Wakehurst Place)
  33. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  34. 95 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 25C; 28 days; (RBG Kew, Wakehurst Place)
  35. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  36. 80 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  37. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 5 days; (RBG Kew, Wakehurst Place)
  38. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 10C; 35 days; (RBG Kew, Wakehurst Place)
  39. 95 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 20C; 28 days; (RBG Kew, Wakehurst Place)
  40. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 25C; 35 days; (RBG Kew, Wakehurst Place)
  41. 100 % germination (seeds sown: 42); germination medium: 1% agar; germination conditions: light 8/16; 15C; 49 days; (RBG Kew, Wakehurst Place)
  42. 85 % germination (seeds sown: 39); germination medium: 1% agar; germination conditions: light 8/16; 20C; 56 days; (RBG Kew, Wakehurst Place)
  43. 71 % germination (seeds sown: 45); germination medium: 1% agar; germination conditions: light 8/16; 25C; 56 days; (RBG Kew, Wakehurst Place)
  44. 92 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 15C; 119 days; (RBG Kew, Wakehurst Place)
  45. 98 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 20C; 119 days; (RBG Kew, Wakehurst Place)
  46. 88 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 25C; 168 days; (RBG Kew, Wakehurst Place)
  47. 92 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 8/16; 15C; 42 days; (RBG Kew, Wakehurst Place)
  48. 90 % germination (seeds sown: 52); germination medium: 1% agar; germination conditions: light 8/16; 20C; 35 days; (RBG Kew, Wakehurst Place)
  49. 81 % germination (seeds sown: 53); germination medium: 1% agar; germination conditions: light 8/16; 25C; 28 days; (RBG Kew, Wakehurst Place)
  50. 85 % germination (seeds sown: 47); germination medium: 1% agar; germination conditions: light 8/16; 30C; 28 days; (RBG Kew, Wakehurst Place)
  51. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 15C; 21 days; (RBG Kew, Wakehurst Place)
  52. 100 % germination (seeds sown: 16); germination medium: 1% agar; germination conditions: light 8/16; 20C; 21 days; (RBG Kew, Wakehurst Place)
  53. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 25C; 21 days; (RBG Kew, Wakehurst Place)
  54. 100 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  55. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  56. 85 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 12/12; 16C; (RBG Kew, Wakehurst Place)
  57. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  58. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 20C; 7 days; (RBG Kew, Wakehurst Place)
  59. 100 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 25C; 7 days; (RBG Kew, Wakehurst Place)
  60. 90 % germination (seeds sown: 20); germination medium: 1% agar; germination conditions: light 8/16; 20C; 14 days; (RBG Kew, Wakehurst Place)
  61. 100 % germination (seeds sown: 19); germination medium: 1% agar; germination conditions: light 8/16; 25/10C (Therm 8/16); 7 days; (RBG Kew, Wakehurst Place)
  62. 100 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 20C; 7 days; (RBG Kew, Wakehurst Place)
  63. 100 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 15C; 7 days; (RBG Kew, Wakehurst Place)
  64. 100 % germination (seeds sown: 10); germination medium: 1% agar; germination conditions: light 8/16; 25C; 7 days; (RBG Kew, Wakehurst Place)
Top  Interpreting the germination data

Literature Cited
  1. Comes, R.D., Bruns, V.F. and Kelley, A.D. 1978. Longevity of certain weed and crop seeds in fresh water. Weed Science, 26:336-344.
  2. 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.
  3. RBG Kew, Wakehurst Place.
  4. Baker Seed Herbarium, California.
  5. Rutledge, C.R. and T. McLendon. sine anno. An Assessment of Exotic Plant Species of Rocky Mountain National Park. Department of Rangeland Ecosystem Science, Colorado State University. Online. Available: http://www.npwrc.usgs.gov/resource/plants/explant/index.htm). 29/10/07.
  6. McIntyre, S., Lavorel, S. and Tremont, R.M. 1995. Plant life-history attributes: their relationship to disturbance response in herbaceous vegetation. Journal of Ecology, 83:31-44.
  7. Thompson, K., Jalili, A., Hodgson, J.G., Hamzeh'ee, B., Asri, Y., Shaw, S., Shirvany, A., Yazdani, S., Khoshnevis, M., Ghahramani, M-A. and Safavi, R. 2001. Seed size, shape and persistence in the soil in an Iranian flora. Seed Science Research, 11:345-355.
Top

Back to search | Interpreting this page