Vol. 34 No. 1 (2020): Advances in Horticultural Science
Articles

Production of seed-propagated compact potted Corylopsis plant in one year

J.H. Kim
Department of Environmental Horticulture, Dankook University, Cheonan, Chungnam, 31116
J.K. Suh
Department of Environmental Horticulture, Dankook University, Cheonan, Chungnam, 31116
S.T. Yoon
Department of Crop Science and Biotechnology, Dankook University, Cheonan, Chungnam, 31116
M.S. Roh
The Institute of Natural Resources Development, Mokpo National University Cheonggye‐myeon, Muan‐gun, Jeonnam, 58554
Published April 1, 2020
Keywords
  • Corylopsis coreana,
  • Corylopsis sinensis var. calvescens,
  • new ornamental plant,
  • pinching,
  • plant growth regulator,
  • slow release fertilizer
  • ...More
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How to Cite
Kim, J. H., Suh, J. K., Yoon, S.-T., & Roh, M. S. (2020). Production of seed-propagated compact potted Corylopsis plant in one year. Advances in Horticultural Science, 34(1), 61-69. https://doi.org/10.13128/ahsc-8402

Abstract

The feasibility to produce compact Corylopsis sinensis var. calvescens and C. coreana plant in a 10 cm pot in one year from transplanting seedlings with maximized number of short shoots and inflorescences was investigated. Corylopsis sinensis var. calvescens was selected as a suitable species to produce compact plant with inflorescences. Slow release fertilizer (SRF) at a rate of 0, 0.125, 0.25, and 0.5 g per pot was applied to the surface of the growing medium (Expt. 1). Shoots were pinched 2 (Feb. 28), 4, 6, and 8 weeks (May 16) (Expt. 2) after transplanting, and ancymidol, paclobutrazol, chlormequat, and daminozide plant growth retardants were treated (Expt. 3). Application of a SRF at 0.5 g per pot and pinching four times at 2-week intervals before May 16 effectively increased the flowering percentages and the number of stems with inflorescences, to accelerate flowering, and also produced a compact plants. Paclobutrazol at 10-20 mg/L applied as soil drench was effective in inhibiting stem elongation in the first year; however, higher concentrations should be avoided to prevent excessive reduction in the growth of shoots and production of malformed inflorescences.

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