Photoperiodic Responses of Dill, a Very Sensitive Long Day Plant

@article{Hamner1939PhotoperiodicRO,
  title={Photoperiodic Responses of Dill, a Very Sensitive Long Day Plant},
  author={K. C. Hamner and A. W. Naylor},
  journal={Botanical Gazette},
  year={1939},
  volume={100},
  pages={853 - 861}
}
1. Approximately 2 per cent of the seedlings from the commercial dill seed employed flowered soon after germination if grown on 9-hour photoperiods, while the remainder continued in a rosette condition for 11 months when grown in the greenhouse at the same photoperiod. 2. Vegetative plants transferred from conditions of short to those of long photoperiod were induced to flower after exposure to as few as four long photoperiods. 3. If vegetative plants which have been maintained on short… Expand
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References

SHOWING 1-4 OF 4 REFERENCES
Photoperiodism in Relation to Hormones as Factors in Floral Initiation and Development
TLDR
Evidence is presented that the floral initiation substance is not identical with any of the following known plant growth factors: vitamins B1, B2, and B6, ascorbic acid, nicotinic Acid, pantothenic acid), theelin, theelol, inositol, or indoleacetic acid. Expand
Correlative Effects of Environmental Factors on Photoperiodism
In I920 GARNER and ALLARD (7, 8) announced the results of experiments and observations on the responses of plants to alternating periods of light and darkness, or variations in the length of day andExpand
The effects of temperature and other environmental factors upon the photoperiodic responses of some of the higher plants
  • Jour . Agr . Res .