EXPERIMENTS ON PHOTOPERIOD IN RELATION TO THE VEGETATIVE GROWTH OF PLANTS.

@article{Bonner1940EXPERIMENTSOP,
  title={EXPERIMENTS ON PHOTOPERIOD IN RELATION TO THE VEGETATIVE GROWTH OF PLANTS.},
  author={J. Bonner},
  journal={Plant physiology},
  year={1940},
  volume={15 2},
  pages={
          319-25
        }
}
  • J. Bonner
  • Published 1940
  • Biology, Medicine
  • Plant physiology
It has long been known that relative length of day and night effects the vegetative as well as the reproductive activity of plants. Since the appearance of the paper of Garner and Allard (7) which first dealt with this subject, abundant factual material has accumulated relating to the influence of photoperiod on such varied processes as shoot elongation, leaf size, accumulation of dry weight and root growth (6, 10). It has been frequently, although not invariably, found that vegetative growth… Expand
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References

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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
RELATION BETWEEN TOP AND ROOT SIZE IN HERBACEOUS PLANTS.
TLDR
It is likely that even within the limits set by nature, increasing or decreasing the normal development of either top or root in order to favor the other part may result in danger to the plant as a whole except this be attempted by persons who thoroughly understand the plant and its conditions of life and vigor. Expand