Growth and morphogenesis of shoot initials of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco, in vitro.

Authors

  • P.W. Evers

DOI:

https://doi.org/10.18174/njas.v33i2.16865

Abstract

A method of micropropagation of Douglas fir is described. Differences in morphogenesis and photosynthesis were found in shoot initials that had been isolated from buds in 10 topophysical positions on 2-yr-old trees. These differences were influenced by medium composition and light intensity, and by forcing, topping or growth regulator treatment of the mother trees. Shoots originating from buds in less exposed parts of the tree generally had a higher relative growth rate, max. net photosynthesis and photochemical efficiency and a lower compensation irradiance. Seasonal changes were found in the optima for nitrate and sucrose concn. in the medium and for light intensity. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1985-05-01

Issue

Vol. 33 No. 2 (1985)

Section

Papers

License

© Copyright KLV All rights reserved. The copyright covers the exclusive right to reproduce and distribute the contribution, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. The Author may publish his/her contribution on his/her personal Web page provided that he/she creates a link to http://library.wur.nl/ojs/index.php/njas and that together with this electronic version it is clearly pointed out, by prominently adding "© KLV", that the copyright for this contribution is held by KLV. The full-text version may be available from the Author's Web page only after a delay of 12 months following the publication of the paper, whereas such a delay is not required for the abstract.