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Tognoni F, Halevy AH, Wittwer SH. Growth of bean and tomato plants as affected by root absorbed growth substances and atmospheric carbon dioxide. Planta. 1966;72(1):43-52doi: 10.1007/BF00388143.
Tognoni, F., Halevy, A. H., & Wittwer, S. H. (1966). Growth of bean and tomato plants as affected by root absorbed growth substances and atmospheric carbon dioxide. Planta, 72(1), 43-52. https://doi.org/10.1007/BF00388143
Tognoni, F, et al. "Growth of bean and tomato plants as affected by root absorbed growth substances and atmospheric carbon dioxide." Planta vol. 72,1 (1966): 43-52. doi: https://doi.org/10.1007/BF00388143
Tognoni F, Halevy AH, Wittwer SH. Growth of bean and tomato plants as affected by root absorbed growth substances and atmospheric carbon dioxide. Planta. 1966 Mar;72(1):43-52. doi: 10.1007/BF00388143. PMID: 24554155.
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Planta. 1966 Mar;72(1):43-52. doi: 10.1007/BF00388143.

Growth of bean and tomato plants as affected by root absorbed growth substances and atmospheric carbon dioxide.

Planta

F Tognoni, A H Halevy, S H Wittwer

Affiliations

  1. Department of Horticulture, Michigan State University, East Lansing, Michigan, USA.

PMID: 24554155 DOI: 10.1007/BF00388143

Abstract

Bean and tomato plants were grown in solution culture root media containing pre-determined concentrations of gibberellin A3 (GA), 1-naphthaleneacetic acid (NAA), N(6)-benzyladenine (BA), (2-chloroethyl)trimethylammonium chloride (CCC), and at atmospheric levels of 300 and 1000 ppm of CO2. Net assimilation rates (NAR), relative growth rates (RGR), leaf area ratios (LAR), root to top dry weight ratios (R/T) and changes in dry weight, size, and form of each organ were recorded.Gibberellin had no effect on RGR of either plant species but increased the NAR of tomatoes at 1000 ppm CO2. Total dry weight was only slightly affected by GA but root growth and R/T were markedly depressed. CCC had no effect on NAR, but decreased RCR and LAR. Root growth of beans and R/T in both plants were promoted by CCC. NAR and RGR were strongly inhibited by BA and NAA. Inhibition of stem and leaf growth by CCC and NAA was greater than that for roots; thus, R/T ratios were increased. Root branching was promoted by NAA.High (1000 ppm), compared to the low (300 ppm), atmospheric levels of CO2 generally promoted root growth and produced an increase in the R/T, both in the absence and presence of chemical treatment. The multiplicity of effects of the rootabsorbed chemical growth substances and CO2 on growth and photosynthesis is discussed.

References

  1. Plant Physiol. 1960 May;35(3):285-8 - PubMed
  2. Plant Physiol. 1960 Nov;35(6):871-7 - PubMed

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