Effect on Shoot Growth Inhibition by Prohexadion-Calcium in 'Sato Nishiki' Sweet Cherry

Prohexadion-Calcium이 체리 '좌등금'의 신초생장 억제에 미치는 영향

  • Lee, Se-Uk (National Institute of Horticultural & Herbal Science) ;
  • Nam, Eun-Young (National Institute of Horticultural & Herbal Science) ;
  • Yun, Seok-Kyu (National Institute of Horticultural & Herbal Science) ;
  • Shin, Yong-Uk (National Institute of Horticultural & Herbal Science) ;
  • Jung, Jae-Hoon (Department of Horticulture, Kongju National University) ;
  • Kang, Hee-Kyoung (Department of Horticulture, Kongju National University) ;
  • Yoon, Ik-Koo (National Institute of Horticultural & Herbal Science)
  • 이세욱 (국립원예특작과학원 과수과) ;
  • 남은영 (국립원예특작과학원 과수과) ;
  • 윤석규 (국립원예특작과학원 과수과) ;
  • 신용억 (국립원예특작과학원 과수과) ;
  • 정재훈 (공주대학교 원예학과) ;
  • 강희경 (공주대학교 원예학과) ;
  • 윤익구 (국립원예특작과학원 과수과)
  • Received : 2010.11.10
  • Accepted : 2010.12.01
  • Published : 2010.12.31

Abstract

This research was conducted to get the basic information for improving production amount as well as fruit quality by using Prohaxadion-Calcium (Pro-Ca) used as 'Sato Nishiki', cherry cultivar, which is most frequently cultivated in Korea. In fruiting trees, we used Pro-ca and concentration of treatment selected 150, 200 and $250\;mg{\cdot}L^{-1}$. When treating Pro-Ca $200\;mg{\cdot}L^{-1}$, we could get the highest effect on inhibition of shoot growth. All treatments of Pro-Ca were increased chlorophyll a and b, respectively compared with control. Although treatments of Pro-Ca treatment showed the decreased effect on leaf area and there was no difference in fruit quality among treatments. Also, Pro-Ca $250\;mg{\cdot}L^{-1}$, sprayed 3 times, and pclobutrazol ($PP_{333}$) 500 and $1,000\;mg{\cdot}L^{-1}$, applicated soil, were treated to 1 year old plnted pot. Pro-Ca and $PP_{333}$ showed inhibition of shoot growth, especially, Pro-Ca showed the more effect than $pp_{333}$ on growth inhibition. Soil applications of $pp_{333}$ showed less effect to enlargement of tree trunk compared to Pro-Ca and control. Pro-Ca and $pp_{333}$ were not difference in number of inter-nodes when comparing to control, but they on decreased leaf area and increased chlorophyll.

본 연구는 우리나라에서 가장 많이 재배되고 있는 체리 '좌등금' 품종에 항지베렐린계 생장억제제인 Prohexadione-Calacium과 Paclobutrazol을 이용하여 체리의 신초생장을 억제하여 효율적인 생산성을 높이고 과실품질을 향상시키기 위한 기초 자료를 얻고자 시험을 한 결과를 요약하면 다음과 같다. 결실수에 대한 Prohexadione-Calacium을 150, 200 및 $250mg{\cdot}L^{-1}$ 농도로 각각 정단부에 처리 후 신초의 생장량을 측정한 결과 모든 처리구에서 무처리에 비해 신초 생장이 억제 되었으며, 처리 간에는 $200mg{\cdot}L^{-1}$에서 억제효과가 가장 높았다. 또한 처리구 모두 엽록소 a와 b 함량이 증가되었거나 증가되는 경향을 보였다. 그러나 과실의 특성(과실크기, 당도, 산함량 및 경도)은 무처리와 차이가 없었다. 유목에 대한 Prohexadione-Calcium 수관살포(3회)와 Paclobutrazol 토양관주(1회) 처리한 후 신초 생장반응은 두 처리 모두 무처리에 비하여 높은 신초생장 억제를 보였고 약제간에는 Prohexadione-Calcium의 신초생장 억제효과가 더 높았으며 Paclobutrazol 토양관주 처리에서는 간주 생장이 억제되는 경향을 보였다. 또한 Prohexadione-Calcium과 Paclobutrazol 처리 모두 절간 수의 차이가 없었으며, 무처리에 비하여 엽면적이 억제 되었고, 엽록소 a 와 b의 함량 모두 높은 결과를 보였으며 특히 Prohexadione-Calcium 처리구에서 엽록소 함량이 더욱 높고 잎의 두께가 두꺼웠다.

Keywords

References

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