FLOWER RESEARCH JOURNAL (화훼연구)

The Korean Society for Floricultural Science (한국화훼학회)
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Growth and Flowering of Cut Spray Chrysanthemum 'Gama' by Daminozide

스프레이 절화국화 '가마'의 daminozide에 의한 생육 및 개화반응

  • Lee, Chang Hee (Dept. of Horticulture, Hankyong National University) ;
  • Park, In Moon (Dept. of Horticulture, Hankyong National University)
  • Received : 2009.03.30
  • Accepted : 2009.06.19
  • Published : 2009.06.30

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Abstract

This study was conducted to improve commercial quality of a cut spray chrysanthemum 'Gama' bred in Korea by foliar application of daminozide (DMZ), suppressing excessive elongation of peduncle caused by high temperature in summer season production. Applications were made at three floral bud developmental stages (I, II, and III), and concentrations used were 0, 500, 1000, and $2000mg{\cdot}L^{-1}$. Both cut flower length and peduncle length showed the greatest suppression of elongation by DMZ treatments at stage II. DMZ also gradually reduced values of those in a concentration-dependant manner. Stem thickness and flower diameter reduced compared to control as DMZ was sprayed at later stage and those two characteristics decreased in a concentration-dependant manner. The number of paralleled flowers neighboring apical part of whole plant showed the best results at stage I and II. As for DMZ concentration, those increased effectively at $500-1,000mg{\cdot}L^{-1}$. Among all combinations, $1,000mg{\cdot}L^{-1}$ DMZ at stage II recorded the most paralleled flowers and showed 24.2% increment as compared to control. The number of fully expanded flowers and total floral buds also showed the highest values using $1,000mg{\cdot}L^{-1}$ DMZ at stage II than the other treatments. In cut spray chrysanthemum cultivar 'Gama' bred in Korea, foliar-spraying with $1,000mg{\cdot}L^{-1}$ DMZ at stage II most effectively suppressed excessive peduncle elongation, parallelled flower cluster arrangement, and increased the number of flowers in summer. However, this combination affected negatively the other commercial qualities, reducing cut flower length, stem thickness, and flower diameter. Therefore, we recommended that foliar-spraying stage and DMZ concentration was stage I and $1,000mg{\cdot}L^{-1}$, respectively, in a practical culture for 'Gama'.

본 연구는 daminozide의 엽면 살포방법을 이용하여 국내 육성 스프레이 국화 '가마(Gama)'의 하계 고온에 의한 꽃목 길이의 과도한 신장을 억제함으로서 품질을 향상시키기 위해 수행하였다. 처리 시기는 화뢰 발달과 정별로 3단계(stage I, II, III)로 나누고 daminozide (DMZ)의 처리농도는 0, 500, 1000, $2000mg{\cdot}L^{-1}$로 구분하여 조합 처리하였다. 절화장과 꽃목 길이는 stage II에서 신장 억제효과가 가장 크게 나타났고, DMZ의 농도가 증가할수록 절화장과 꽃목 길이는 감소하였다. 줄기직경과 화폭은 무처리구에 비하여 처리시기가 늦어질수록 줄어들었으며, DMZ의 농도가 증가할수록 비례적으로 감소하였다. 선단부의 평행 배열된 화수는 시기별로는 stage I과 II에서 농도에서는 $500-1,000mg{\cdot}L^{-1}$ DMZ 처리에서 각각 가장 많았다. 전체 처리 중에서는 $1,000mg{\cdot}L^{-1}$ DMZ를 stage II에 처리시 무처리구 대비 24.2%가 증가하여 가장 우수하였다. 화수와 총 화뢰수도 $1,000mg{\cdot}L^{-1}$ DMZ를 stage II에 처리시 가장 많았다. '가마(Gama)'의 하계 재배시 꽃목(소화경)의 신장을 가장 효과적으로 억제하고 화서배열을 고르게 하며 화수 증가를 유도하는 DMZ의 처리농도와 시기는 $1,000mg{\cdot}L^{-1}$와 stage II로 나타났다. 그러나 이 처리는 절화장, 줄기직경, 화폭의 감소가 크게 나타나 상품성의 또 다른 면에서 불리하게 작용하였다. 따라서 실용적인 최적 처리시기와 농도는 stage I에서 $1,000mg{\cdot}L^{-1}$로 판단되었다.

Keywords

Acknowledgement

Supported by : 농촌진흥청

References

  1. Boe, A.A., T.S. Lee, D.D. Tapido, and T.J. Banks. 1973. The effect of SADH on radish. HortScience 17:737-738.
  2. Cathey, H.M. 1964. Physiology of growth retarding chemicals. Ann. Rev. Plant Physiol. 15:271-302. https://doi.org/10.1146/annurev.pp.15.060164.001415
  3. Choi, K.J. 2002. International union for the protection of new varieties of plants (UPOV) and its 1991 convention. Kor. J. Hort. Sci. Technol. 20:151-159.
  4. Gibertz, D.A. 1992. Chrysanthemum response to timing of paclobutrazol and uniconazole spray. HortScience 27: 322-323.
  5. Huh, E.J., Y.R. Lee, S.Y. Choi, K.R. Do, and C.H. Park. 2007. Genotypic differences of axillary budding in response to temperature and ethephon treatment in non- branching chrysanthemums. Hort. Environ. Biotechnol. 48:370-375.
  6. Hwang, J.C., Y.D. Chin, Y.M. Chung, and S.G. Kim. 2008a. A new early flowering, spray chrysanthemum cultivar for cut flower, 'Pinky' with single type and pink petals. Kor. J. Breed. Sci. 40:196-200.
  7. Hwang, J.C., Y.D. Chin, Y.M. Chung, and S.G. Kim. 2008b. A new spray chrysanthemum cultivar, 'Water Fog' with single type and white petals for cut flower. Kor. J. Breed. Sci. 40:159-163.
  8. Kim, J.H., J.S. Lee, T.J. Kim, H.H. Kim, S.D. Kim, C.H. Lee, and Y. Yun. 2001. Effect of shading and growth regulator treatment on growth and flower quality of 'Baegkwang' chrysanthemum. J. Kor. Soc. Hort. Sci. 42:201-204.
  9. Kim, J.H., K.Y. Paek, H.H. Kim, H.D. Lee, J.W. Lee, S.D. Kim, and T. Yun. 2004. Effect of plant growth retardants on spike length in planting time of Dendranthema graniflorum 'Baegkwang'. Kor. J. Hort. Sci. Technol. 22:333-338.
  10. Kwack, B.H. and Y.K. Kim. 1972. Effects of N-dimethyl amino succinamic acid on growth behavior of various potgrown ornamental plants. J. Kor. Soc. Hort. Sci. 11:49-53.
  11. Kwon, M.K., H.S. Kim, Y.Y. Han, S.H. Chung, B.S. Choi, and C.G. Sang. 2001. Effects of plant growth retardants on producing high quality of spray chrysanthemum. Kor. J. Hort. Sci. Technol. 19:564-567.
  12. Lee, J.S. and B.H. Kwack. 1973. Effects of several dwarfing agents on the growth and flowering Chrysanthemum morifolium. J. Kor. Soc. Hort. Sci. 15:168-172.
  13. Lim, J.H., H.K. Shin, S.Y. Choi, H.R. Cho, H.K. Rhee, M.S. Kim, and Y.J. Kim. 2007a. A new spray chrysanthemum cultivar, 'Yellow PangPang' with vigorous pompon type and yellow color for cut flower. Kor. J. Breed. Sci. 39:526-527.
  14. Lim, J.H., H.K. Shin, S.Y. Choi, H.R. Cho, H.K. Rhee, M.S. Kim, and Y.J. Kim. 2007b. A new spray chrysanthemum cutivar, 'Pink Pride' with resistant to whit rust, single type and pink color for cut flower. Kor. J. Breed. Sci. 39: 514-515.
  15. MAF(Ministry of Agriculture and Forestry of Korea). 2008. Annual report of floriculture. p.5-21, 160.
  16. Riddell, J.A., H.A. Hageman, C.M. Janthony, and W.L. Hubbard. 1962. Retardation of plant growth by a new group of chemicals. Science 136:391. https://doi.org/10.1126/science.136.3514.391
  17. Sanderson, K.C., D.A. Smith, and J.A. McGuire. 1994. Vacuum infusion with daminozide for retarding potted chrysanthemum height. HortScience 29:330.
  18. Shin, H.J. and J.M. Lee. 1979. Effect of propagation method and growth regulators on the rooting of chrysanthemum cutting. J. Kor. Soc. Hort. Sci. 20:111-116.
  19. Shin, H.K. and J.K. Ko. 1996. Effects of plant growth regulators on the expression of branchless in chrysanthemum. RDA. J. Agri. Sci. 38:477-482.
  20. Shin, H.K. and S.T. Choi. 1996. Effects of plant growth regulators on axillary bud initiation in branchless chrysanthemums (Dendranthema grandiflorum Kitamura). J. Kor. Soc. Hort. Sci. 37:299-303.
  21. Shin, H.K., J.H. Lim, H.R. Cho, H.K. Rhee, M.S. Kim, C.S. Bang, Y.A. Kim, and Y.J. Kim. 2005a. A new spray chrysanthemum cultivar, 'Charming Eye' with single type and pink petals for cut flower. Kor. J. Breed. Sci. 37:269-270.
  22. Shin, H.K., S.R. Choi, K.J. Kim, H.D. Kim, and H.Y. Joung. 2005b. A new spray chrysanthemum cultivar, 'Ilweol' with anemone type and yellow color. Kor. J. Breed. Sci. 37:117-118.
  23. Shin, H.K., S.Y. Choi, O.K. Kwon, E.J. Hur, and H.Y. Joung. 2004. Single-type mix-colored purple spray chrysanthemum 'Gama' for cut-flower. Kor. J. Hort. Sci. & Technol. 22 (Suppl. I):105(Abstr.).
  24. Shin, H.K., S.Y. Choi, T.I. Kim, H.D. Kim, H.Y. Joung, J.Y. Ko, D.W. Lee, and H.S. Park. 2000. New spray chrysanthemum cultivar 'Kumsu' with poly-flowering habit. Kor. J. Hort. Sci. & Technol. 18:233(Abstr.).