Summary
Germinated pollen of Pinus radiata contains an auxin which is active in the Avena coleoptile test. It differs from all other hormones detected in pine pollen in that it is readily able to diffuse out from the pollen into an agar medium. It is suggested that, following pollination in vivo, the auxin may diffuse from the germinated pollen-tube onto the nucellus, thereby triggering the processes which allow ovule and gametophyte development to proceed. The auxin is water-soluble and may be an indole derivative.
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References
Crane, J. C.: Growth substances in fruit setting and development. Ann Rev. Plant Physiol. 15, 303–326 (1964).
Ferguson, M. C.: Contributions to the knowledge of the life history of Pinus with special reference to sporogenesis, the development of the gametophytes and fertilisation. Proc. Wash. Acad. Sci. 6, 1–202 (1904).
Muir, R. M.: The growth hormone mechanism in fruit development. In: Plant growth substances, p. 357–364 (F. Skoog, ed.). Madison: Univ. of Wisconsin Press 1951.
Nielsen, N., Grommer, J., Lunden, R.: Investigations on the chemical composition of pollen from some plants. Acta chem. scand. 9, 1100–1106 (1955).
Nitsch, N. P., Nitsch, C.: Studies on the growth of coleoptile and first internode sections. A new sensitive straight growth test for auxins. Plant Physiol. 31, 94–111 (1956).
Sarvas, R.: Investigations on the flowering and seed crop of Pinus sylvestris. Comm. Inst. For. Fenn. 53, No. 4 (1962).
Sirois, J. C.: Studies on growth regulators. I. Avena coleoptile elongation test for auxin. Plant Physiol. 41, 1308–1312 (1966).
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Sweet, G.B., Lewis, P.N. A diffusible auxin from Pinus radiata pollen and its possible role in stimulating ovule development. Planta 89, 380–384 (1969). https://doi.org/10.1007/BF00387240
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DOI: https://doi.org/10.1007/BF00387240