Gibberellin promotion of physiological leaf spot in detached 'Golden Delicious' apple leaves.

Authors

  • W.J. Kender
  • H. Jonkers

DOI:

https://doi.org/10.18174/njas.v23i2.17191

Abstract

The development of leaf spot, a non-pathogenic disorder specific to the cv. Golden Delicious, was accelerated in detached leaves (whether previously unmarked or showing leaf spot) when these were cultured in solutions of GA3 or GA4+7 at 10, 50 or 100 mg/l for 72 h. About 15% of the foliage on the trees exhibited leaf spot at the time selected leaves were detached for culture. In a second experiment with cultured leaves the interaction of PBA and GA4+7 applied simultaneously was highly synergistic in increasing the severity of the disorder when compared with the effect of either growth substance alone. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1975-05-01

Issue

Vol. 23 No. 2 (1975)

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.