Seed Information Database

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

APG Clade: EUDICOTS - CORE EUDICOTS - ROSIDS - EUROSIDS I
APG Order: Fabales
APG Family: FABACEAE
Kew Family: LEGUMINOSAE-PAPILIONOIDEAE
Genus: Crotalaria
Species Epithet: incana
Species Author: L.
Life Form: ther.


Storage Behaviour

Storage Behaviour: Orthodox
Storage Conditions: Long-term storage under IPGRI preferred conditions at RBG Kew, WP. Oldest collection 13 years; average germination change 100 to 95%, mean storage period 11 years, 4 collections

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1000 Seed Weight

Average 1000 Seed Weight(g): 7.0
Details of Component Seed Weights:
  1. 6.9; (Earle & Jones, 1962); Seed
  2. 7.6; (Earle & Jones, 1962); Seed
  3. 8.1; (Earle & Jones, 1962); Seed
  4. 6.9; (Earle & Jones, 1962); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  5. 7.6; (Earle & Jones, 1962); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  6. 8.1; (Earle & Jones, 1962); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  7. 3.8; (Barclay & Earle, 1974); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  8. 6.6; (Barclay & Earle, 1974); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  9. 7.0; (Barclay & Earle, 1974); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  10. 7.3; (Barclay & Earle, 1974); Seed; Seed mc not stated, but weight is likely to refer to air-dry seed.
  11. 5.3816; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  12. 5.8336; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  13. 5.9132; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  14. 6.3148; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
  15. 10.9172; (RBG Kew, Wakehurst Place); Seed; *Seed weights reported may include minor covering structures
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Seed Dispersal

  1. Unassisted; Seeds drop to the ground close to or beneath the parent plant; Method not stated; (Moreno-Casasola et al., 1994); Diaspore=seed. Pods are dehiscent.
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Germination

  1. 100 % germination (seeds sown: 50); pre-sowing treatments: scarification (seed coat partially removed with scalpel. seed coat chipped); germination medium: 1% agar; germination conditions: light 12/12; 33/19C (Therm 12/12); (RBG Kew, Wakehurst Place)
  2. 96 % germination (seeds sown: 50); pre-sowing treatments: 1. sterilisation (immersed seeds in 10% domestos for 5 minutes); 2. scarification (seed coat partially removed with scalpel. seed coat chipped); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  3. 100 % germination (seeds sown: 50); germination medium: 1% agar; germination conditions: light 12/12; 26C; (RBG Kew, Wakehurst Place)
  4. 100 % germination (seeds sown: 50); pre-sowing treatments: scarification (seed coat partially removed with scalpel. seed coat chipped); germination medium: 1% agar; germination conditions: light 12/12; 26C; (RBG Kew, Wakehurst Place)
  5. 100 % germination (seeds sown: 20); pre-sowing treatments: scarification (seed coat partially removed with scalpel. seed coat chipped); germination medium: 1% agar; germination conditions: light 12/12; 21C; (RBG Kew, Wakehurst Place)
  6. 100 % germination (seeds sown: 25); pre-sowing treatments: scarification (seed coat partially removed with scalpel. seed coat chipped); germination medium: 1% agar; germination conditions: light 8/16; 20C; 2 days; (RBG Kew, Wakehurst Place)
  7. 100 % germination (seeds sown: 25); pre-sowing treatments: scarification (seed coat partially removed with scalpel. seed coat chipped); germination medium: 1% agar; germination conditions: light 8/16; 30/15C (Therm 8/16); 7 days; (RBG Kew, Wakehurst Place)
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Oil Content

Average of Oil Content (%): 3.3
Details of Component Oil Contents:
  1. 2.7; (Earle & Jones, 1962); Entire seed/nut; Moisture content not stated
  2. 3.0; (Earle & Jones, 1962); Entire seed/nut; Moisture content not stated
  3. 4.5; (Jones & Earle, 1966); Entire seed/nut; Moisture content not stated
  4. 3.0; (Earle & Jones, 1962); Entire seed/nut; Moisture content not stated
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Protein Content

Average of Protein Content (%): 30.48
Details of Component Protein Contents:
  1. 29.5; (Earle & Jones, 1962); Entire seed/nut; Moisture content not stated
  2. 27.9; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
  3. 28.6; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
  4. 31.9; (Jones & Earle, 1966); Entire seed/nut; Moisture content not stated
  5. 29.1; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
  6. 33.1; (Barclay & Earle, 1974); Entire seed/nut; Moisture content not stated
  7. 33.5; (Earle & Jones, 1962); Entire seed/nut; Moisture content not stated
  8. 30.2; (Earle & Jones, 1962); Entire seed/nut; Moisture content not stated
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Seed Morphology

(RBG Kew, Wakehurst Place; material provided by National Gene Bank of Kenya.)

Fruit:

Fruit type: legume
Diaspore: seed
Mechanical protection of seed: seed coat
Fruit dehiscent: Yes

Seed:


Seed size length (mm): 2.61 - 2.82
Seed size width (mm): 1.4 - 1.5
Seed size height (mm): 2.17 - 2.45
Seed colour: brown, with lighter speckled patches
Seed shape: reniform with a deep ventral notch
Sarcotesta: absent
Seed appendages: none
Seed surface: smooth
Raphe: very short
Hilum: small
Other specialised structures: none

Internal Morphology:


Seed configuration: ana-campylotropous
Embryo type: axial-bent
Relative size embryo: dominant (3/4 plus)
Perisperm present: no
Endosperm ruminate: No
Embryo colour: yellowish-white

Images:  SS-LV  S-LV  S-LS  S-CS  

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Literature Cited
  1. Earle, F.R. and Jones, Q. 1962. Analyses of seed samples from 113 plant families. Economic Botany, 16:221-250.
  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. 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.
  4. RBG Kew, Wakehurst Place.
  5. Moreno-Casasola, P., Grime, J.P. and Martnez, L. 1994. A comparative study of the effects of fluctuations in temperature and moisture supply on hard coat dormancy in seeds of coastal tropical legumes in Mexico. Journal of Tropical Ecology, 10:67-86.
  6. RBG Kew, Wakehurst Place; material provided by National Gene Bank of Kenya.
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