Effects of UV-B and Growth Inhibitor on Overgrowth Retardation and Growth and ield after Planting in Fruit-Vegetable Plug Seedlings

UV-B와 생장억제제 처리가 과채류 플러그 묘의 도장 억제와 정식 후 생육 및 수량에 미치는 영향

  • 권준국 (영남농업시험장 부산원예시험장) ;
  • 이재한 (영남농업시험장 부산원예시험장) ;
  • 최영하 (영남농업시험장 부산원예시험장) ;
  • 유인호 (영남농업시험장 부산원예시험장) ;
  • 황갑춘 (영남농업시험장 부산원예시험장)
  • Published : 2003.12.01

Abstract

This experiment was performed to investigate the effect of UV-B (4 kJ${\cdot}m^{-2}{\cdot}d^{-1}$) irradiation and growth inhibitor (50 mg${\cdot}L^{-1}$ diniconazole, 500 mg${\cdot}L^{-1}$) treatment on the overgrowth retardation and the growth and yield afterplanting in plug-grown cucumber, tomato, and hot pepper sedlings. Stem length of UV-B-irradiated and iniconazole-treated seedlings was shortened by 38 and 35%^ in cucumber, 37 and 41% in tomato, and 23 and 23% in hot pepper, respectively, compared with non-treated seedlings. While retarding effect ofhexaconazole waslower that that of UV-B or diniconazle. Leaf area and dry weight alson decreased but ldaf thickness increased in UV-B irradiated or growth-inhibitor-treated seedlings. Even thouth the plant height and leaf area of UV-B-irradiated seedlings ant seedling stage were shorter and smaller that those ofnon-treatedd seedlings, they were recovered to the similar level to the growth of non-treated seedlings 20to 30days after trasplantin. The diconazole-and hexaconazole-treated seedlings were delayed recovery to their normal growth, Fruit yiedl of UV-V-irradiated hot pepper and tomato slightly increased but UV-B irradiated cucumer had similar yield to growth-inhibitor-treated one. It suggested that the use of UV-B irradiation could become a reliable tool of overgrowth retardation of plug-grown vegetable seedlings in greenhouse.

UV-B(4 kJ${\cdot}m^{-2}{\cdot}d^{-1}$) 조사와 생장억제제(50 mg${\cdot}L^{-1}$ diniconazole, 500 mg${\cdot}L^{-1}$) 처리가 오이, 토마토 및 고추 플러그 묘의 도장 억제와 정식 이후의 생육과 수량에 미치는 효과를 비교하였다. 플러그 묘의 경장은 UV-B와 diniconazole 처리에서 무처리에 비해 각각 오이 38, 35%, 토마토 37, 41%, 고추 23. 23% 억제되었으며 hexaconaxole,은 억제효과가 낮았다. 그리고 엽면적과 건물중도 UV-B와 생장억제체 처리에 의해 감소되엇다. 뱐면 잎 두께는 UV-B와 생장억제제 처리에 으해 두꺼워지는 경향이었다. 건묘지수는 3작물 모두 UV-B와 생장억제제 처리에 의해 증가외었고 특히 diniconazole와 UV-B 처리가 Hexxonazoile처리에 비해 더 높았다. UV-V를 처리한 플러그 묘는 3작물 모두 정식 시에는 무처리에 비해 초장, 엽면적 등이 짧고 작았으나 정식 후 20-30 일경에는 무처리와 비슷한 수준으로 회복되었다. 이에 반해 생장억제제를 처리한 묘는 회복이 늦어 UV-B 처리한 것에 비해 생장이 저조하였다. 과실 수랴은 오이의 경우 처리간에 차이가 없었으나 토마토와 고추 UV-B를 처리한 것이 생장억제제를 처리한 것에 비해 다소 맣았다. 따라서 UV-B 조사는 과채류 플러그 묘의 도장 억제를 위한 환경 친화적인 방법으로서 이용될 수 있음을 시사해주었다.

Keywords

References

  1. Bae, E.J. 1999. Growth control of vegetable seedlings by plant growth retardant and UV light treatment. PhD Diss., Kyeonghee Univ., Suwon, Korea
  2. Bae, E.J., K. Inamoto, M. Doi, and H. Imanishi. 1998. Retardation of hypocotyl elongation of ornamental and vegetable seedling by ultraviolet irradiation. J. Jpn. Soc. Hort. Sci. 67:945-950 https://doi.org/10.2503/jjshs.67.945
  3. Bausher, M.G. and G. Yelenosky 1987. Morphological changes in citrus associated with relatively high concentration of paclobutrazol. Plant Growth Regul. 5:139-147 https://doi.org/10.1007/BF02087182
  4. Bertram, L. and B. Lercari. 1996. The use of UV radiation to control the architecture of Salvia splendens plants: II. Relationships between PAR levels and radiation in the photoregulation of stem elongation. Photochem. Photobiol. 64:131-136 https://doi.org/10.1111/j.1751-1097.1996.tb02432.x
  5. Choi, Y.H. 2002. Transplant quality and the yield of tomatoes and cucumbers as affected by transplant production methods in summer. PhD Diss., Gyeongsang Nat'l Univ., Jinju, Korea
  6. Fletcher, R.A. and V. Arnold, 1986. Stimulation of cytokinins and chlorophyll synthesis in cucumber cotyledons by triadimefon. Physiol. Plant. 66:197-201 https://doi.org/10.1111/j.1399-3054.1986.tb02408.x
  7. Gamer, L.C. and B. Thomas. 1996. Mechanical conditioning for controlling excessive elongation in tomato transplants: Sensitivity to dose, frequency and timing of brushing. J. Amer. Soc. Hort. Sci. 121:894-900
  8. Gent, M.P.N. 1997. Persistence of triazole growth retardants on stem elongation of Rhododendron and Kalmia. J. Plant Gowth Regul. 16:197-203 https://doi.org/10.1007/PL00006996
  9. Giannini, A., A. Pardossi, and B. Lercari. 1996. The use of UV radiation to control the architecture of Salvia splendens plants. I. Effects on plant growth, water relations and gas exchange. Photochem. PhotobioI. 64:123-130 https://doi.org/10.1111/j.1751-1097.1996.tb02431.x
  10. Giuseppe, D.C. and B. Lercari.1997. Use of UV radiation for control of height and conditioning of tomato transplants. Sci. Hort. 71:27-34 https://doi.org/10.1016/S0304-4238(97)00083-6
  11. Latimer, J.G. and G.A. Mitchel., 1987. UV-B radiation and photosynthetic irradiance acclimate eggplant for outdoor exposure. HertScience 22:426-429
  12. Lercari, B., F. Bretzel, and S. Piazza. 1992. Effects of UV treatments on stem growth of some greenhouse crops. Acta Hort. 327:99-104
  13. Sekimoto, H., K. Matsuura, and T. Yoshino. 1998. Relationship between the greening of leaves by the treatment with a gibberellin-biosynthesis inhibitor and leaf area or nitrogen content in Cucumis sattvus L. J. Jpn. Soc. Hort. Sci. 67:270-272 https://doi.org/10.2503/jjshs.67.270
  14. Wang, S.Y. and M. Faust. 1986. Effect of growth retardants on root formation and polyamine content in apple seedlings. J. Amer. Soc. Hort. Sci. 111:912-917