Changes in the gibberellin content of Bryophyllum daigremontianum in connection with floral induction.

Authors

  • J.A.D. Zeevaart

DOI:

https://doi.org/10.18174/njas.v17i3.17374

Abstract

After transfer from long days (LD) to short days (SD) the GA content of B. daigremontianum increased to a maximum at 14 SD, which is the minimal duration of inductive treatment necessary for flowering. At the time flower primordia started to differentiate the GA level reached a second peak. Between the two maxima the GA content dropped to a low level at 20 SD. Under LD conditions it showed little variation. Plants shifted to SD at a night temperature of 23 degrees C. did not flower and the GA content diminished to that of plants grown in SD throughout. Variations in the GA level were due to changes in fraction II, which is probably identical with GA5. No significant changes in the level of fraction I were observed.-Mich. St. Univ., East Lansing. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Published

1969-08-01

Issue

Vol. 17 No. 3 (1969)

Section

Papers

License

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