biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 16:469-471, 1974 | DOI: 10.1007/BF02922239

Intracapitular cypsele dimorphism and dormancy inBidens bipinnata

K. M. M. Dakshini1, S. K. Aggarwal1
1 Department of Botany, University of Delhi, Delhi, India

InBidens bipinnata, a common composite inhabiting mostly gravelly or rocky habitats, two cypsele types are found within a single capitulum. These dimorphic cypsele types differ in their dormancy periods. Evolutionary implications of this differential intracapitular cypsele dormancy are discussed.

Received: February 11, 1974; Published: November 1, 1974  Show citation

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Dakshini, K.M.M., & Aggarwal, S.K. (1974). Intracapitular cypsele dimorphism and dormancy inBidens bipinnata. Biologia plantarum16(6), 469-471. doi: 10.1007/BF02922239
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References

  1. Barton, Lela V.: Seed dormancy: General survey of dormancy types in seeds, and dormancy imposed by external agents.-In:Ruhland, W. (ed.) Handbuch der Pflanzenphysiologie. Vol. 15. Pp. 699-720. Springer-Verlag, Berlin 1965. Go to original source...
  2. Brown, N. A. C., van Staden, J.: The effect of scarification, leaching, light, stratification, oxygen and applied hormones on germination ofProtea compacta R. Br. andLeucadendron daphnoides Meisn.-J. S. Afr. Bot.39: 185-195, 1959.
  3. Dakshini, K. M. M., Tandon, R. K.: Seed germination in the grassOropetium thomaeum (Linn. f.)Trin.-Flora B158: 631-644, 1969. Go to original source...
  4. Evenari, M.: Germination inhibitors.-Bot. Rev.15: 153-194, 1949. Go to original source...
  5. Harper, J. L., Lovell, P. H., Moore, K. G.: The shape and size of seeds.-Annu. Rev. Ecol. Syst.1: 327-356, 1970. Go to original source...
  6. Heslop-Harrison, J.: New Concepts in Flowering Plant Taxonomy.-Heinemann, London 1967 (Repr.).
  7. Maurya, A. N., Ambasht, R. S.: Significance of seed dimorphism inAlysicarpus monilifer DC.- J. Ecol.61: 213-218, 1973. Go to original source...
  8. Pandey, S. B.: Adaptive significance of seed dormancy inAnagallis arvensis Linn.-Trop. Ecol.9: 171-193, 1968.
  9. Williams, J. T., Harper, J. L.: Seed polymorphism and germination 1. The influence of nitrates and low temperature on the germination ofChenopodium album.-Weed Res.5: 141-150 1965. Go to original source...