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

APG Clade: EUDICOTS - CORE EUDICOTS - ROSIDS
APG Family: ZYGOPHYLLACEAE
Kew Family: ZYGOPHYLLACEAE
Genus: Tribulus
Species Epithet: terrestris
Species Author: L.
Life Form: ther.


Storage Behaviour

Storage Behaviour: Orthodox
Storage Conditions: A few seeds survive after 5 years open storage (Comes et al., 1978); long-term storage under IPGRI preferred conditions at RBG Kew, WP. Oldest collection 3 years

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1000 Seed Weight

Average 1000 Seed Weight(g): 16.5
Details of Component Seed Weights:
  1. 1.3; (Barclay & Earle, 1974); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  2. 1.6; (Barclay & Earle, 1974); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  3. 39.453; (Jurado et al., 1991); Diaspore; SD=11.691; weight is based upon the average of 20 individual diaspore masses; diaspores were dried at 80C for 24 hours prior to weighing.
  4. 37.84; (Sen, 1982); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  5. 2.467; (Baker Seed Herbarium, California); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
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Seed Dispersal

  1. Animal; Diaspore is carried accidentally; Method not stated; (Sen, 1982); Mammals (non-bat).; Diaspore=fruit. The diaspore has spiny, spiky, hooked or barbed projections or awns. Hard spines pierce hooves, feet or shoes.
  2. Unassisted; Seeds drop to the ground close to or beneath the parent plant; Assumption based upon diaspore morphology; (Jurado et al., 1991)
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Oil Content

Average of Oil Content (%): 33.5
Details of Component Oil Contents:
  1. 29.2; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
  2. 37.8; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
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Protein Content

Average of Protein Content (%): 42.35
Details of Component Protein Contents:
  1. 38.5; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
  2. 46.2; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
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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. Barclay, A.S. and Earle, F.R. 1974. Chemical analyses of seeds III: oil and protein content of 1253 species. Economic Botany, 28:178-236.
  3. Jurado, E., Westoby, M. and Nelson, D. 1991. Diaspore weight, dispersal, growth form and perenniality of central Australian plants. Journal of Ecology, 79:811-830.
  4. Sen, D.N. 1982. Environment and Plant Life in Indian Desert. Geobios International, Jodhpur, India.
  5. Baker Seed Herbarium, California.
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