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Retardation of shoot growth and promotion of tuber growth of potato plants by paclobutrazol

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Abstract

The relationship between shoot growth and tuber yield in potato plants (Solanum tuberosum L. cv. Russet Burbank) was studied under greenhouse conditions using paclobutrazol [(2R,3R + 2S,3S)-1-(4-chlorophenyl)-4,4-dimethyl-2-(l,2-4-triazol-l-yl)-pentan-3-ol), PP333], a growth retardant. Concurrent with reduction of stem elongation by the application of paclobutrazol to base of the main stem was a decrease in the dry weight of the shoot and an increase in the dry weight of the tuber. The inhibitory effect of paclobutrazol on stem elongation was reversed by gibberellic acid A3 (GA3). Leaf content of raffinose sugar and chlorophyll increased upon paclobutrazol treatment.

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Abbreviations

3CCC:

(2-chloroethyl)trimethylammonium chloride

4B995:

chloroethylaminosuccinamic acid

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Authors and Affiliations

  1. Department of Horticulture and Landscape Architecture, Washington State University, 99164-6414, Pullman, WA

    V. Balamani (Research Assistant) & B. W. Poovaiah (Professor)

Authors
  1. V. Balamani
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  2. B. W. Poovaiah
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Additional information

Scientific Paper No. 7093, Washington State University, College of Agriculture and Home Economics Research Center, Pullman, Project 0321. Partial support was provided by the Washington State Potato Commission.

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Balamani, V., Poovaiah, B.W. Retardation of shoot growth and promotion of tuber growth of potato plants by paclobutrazol. American Potato Journal 62, 363–369 (1985). https://doi.org/10.1007/BF02855607

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  • DOI: https://doi.org/10.1007/BF02855607

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