Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Effect of Plant Growth Regulators on Fruit Enlargement and Optimal Harvest Time in Sageretia thea (Osback) M. C. Johnst

생장조정제 처리가 상동나무 열매의 비대와 수확시기에 미치는 영향

  • Song, Sang Churl (Jeju Special Self Governing Province Agricultural Research and Extension Services) ;
  • Song, Chang Khil (Majors in Plant Resource and Environment, College of Applied Life Sciences, SARI, Jeju National University) ;
  • Kim, Ju Sung (Majors in Plant Resource and Environment, College of Applied Life Sciences, SARI, Jeju National University)
  • 송상철 (제주특별자치도농업기술원) ;
  • 송창길 (제주대학교 생명자원과학대학 친환경농업연구소) ;
  • 김주성 (제주대학교 생명자원과학대학 친환경농업연구소)
  • Received : 2015.06.09
  • Accepted : 2015.07.27
  • Published : 2015.08.30
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Abstract

This study had been conducted to investigate the effect of some plant growth regulators inducing fruit enlargement and optimal harvest time in Sageretia thea. Two hundred fifty $mg/{\ell}$ mepiquat chloride treatment, $1mg/{\ell}$ thidiazuron treatment on full bloom, and $200mg/{\ell}$ gibberellic acid treatment on 7 days before full bloom resulted in the increase of 21.7% in weight, and $200mg/{\ell}$ gibberellic acid treatment 7 days before full bloom, 10$mg/{\ell}$ forchlorfenuron treatment 14 days after full bloom, and $1mg/{\ell}$ thidiazuron treatment on full bloom also brought about positive effects on the enlargement of the fruit, increasing 6.3%, 6.3% and 8.1% in its transverse diameter, respectively. Furthermore, the effects of the plant growth regulator treatments on the harvest time of Sageretia thea were determined as follows: the increase in the optimal harvest time of 57.2 - 75.4%, shorter maturation period, by the treatments with $500mg/{\ell}$ mepiquat chloride 7 days after full bloom, $100mg/{\ell}$ gibberellic acid treatment on full bloom, $2.5mg/{\ell}$ forchlorofenuron 7 days after full bloom and $2mg/{\ell}$ thidiazuron treatment 7 days before full bloom; and the greater effects of plant growth regulator treatments on the fruit maturation in the following order, gibberellic acid > thidiazuron > forchlorofenuron > mepiquat chloride. The results of this study are expected to be used as a reference data to develop Sageretia thea as a new local specific crop for Jeju island.

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References

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