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2019 Vol.37, Issue 4 Preview Page

Research Article

Effects of Octyl Alcohol Treatments on Fruit Set and Fruit Quality Attributes in ‘Fuji’ Apples

Octyl Alcohol 처리가 ‘후지’ 사과의 착과와 과실품질에 미치는 영향

Jingi Yoo1†
,
Jung-Geun Kwon1†
,
Young-Je Cho2
,
Hee-Young Jung3
,
Woo-Sung Kim4
,
In-Kyu Kang1*
유 진기1†
,
권 중근1†
,
조 영제2
,
정 희영3
,
김 우성4
,
강 인규1*
1Department of Horticultural Science, Kyungpook National Universit
2School of Food Science & Biotechnology, Kyungpook National University
3School of Applied Biosciences, Kyungpook National University
4JahngRyu Industries Co., Ltd.
1경북대학교 원예과학과
2경북대학교 식품공학부
3경북대학교 응용생명과학부
4장유산업
* Corresponding Author
† These authors contributed equally to this work.
31 August 2019. pp. 455-462
PDF XML Citation
Abstract

This study was carried out to investigate the effect of lime sulfur and octyl alcohol treatments on the fruit set and fruit quality of 'Fuji' apples. Lime sulfur (Bé 22°) was sprayed twice at 2 and 3 days after the central flower’s full bloom (CFFB). Octyl alcohol (81%) was applied at 1 day (1D), 2 days (2D), or 3 days (3D) after CFFB in ‘Fuji/M.9’ trees. The number of fruits per cluster in terminal flowers (TF) was 3.71 for the control and 1.85 for the octyl alcohol 2D treatment, the number in lateral flowers (LF) were very low - 0.96 and 1.01 for the octyl alcohol 2D and 3D treatments, respectively- compared with untreated (3.27). The percentage of central fruit per cluster was 82.3% in the TF and 63.8% in the LF for the control, and 60.6% in the TF and 33.9% in the LF for the octyl alcohol 2D treatment. Furthermore, the rate of non-fruit set per cluster in the TF was 0.7% for the control and 19.7% for the octyl alcohol 2D treatment. Single fruit rate per cluster in the TF was very low for the control but higher in the octyl alcohol 2D treatment. In addition, the percentage of clusters with three or more than four fruits per cluster was 80.3% for the control, but lower for the octyl alcohol 2D treatment. There was no difference in flower bud differentiation rate and fruit quality between the control and octyl alcohol treatments. Overall, the results indicated that octyl alcohol treatment positively affected flower thinning compared with the control.

Keywords
centeral fruit
flower bud differentiation
flower thinner
lateral flower
terminal flower

본 연구는 ‘후지’ 품종에 석회유황합제(lime sulfur)와 옥탄올(octyl alcohol) 처리가 착과와 과실 품질에 미치는 영향을 조사하였다. 석회유황합제(Bé 22°)는 ‘후지/M.9’ 나무에 중심화 만개 2일후와 3일후에 2회 처리하였고, 옥탄올은 중심화 만개 1일 후(1D), 2일 후(2D), 3일 후(3D)에 각각 1회 처리하였다. 과총당 착과수는 정화아의 경우 무처리구는 3.71개, octyl alcohol 2D 처리구는 1.85개였고, 액화아의 경우는 무처리구(3.27개)에 비하여 octyl alcohol 2D와 3D 처리구가 각각 0.96개와 1.01개로 매우 낮은 착과수를 보였다. 그리고 중심과 착과율은 무처리구의 경우 정화아는 82.3%, 액화아는 63.8%였고, octyl alcohol 2D 처리구의 경우 정화아는 60.6%와 액화아는 33.9%였다. 정화아의 무착과율은 무처리는 0.7%였으나, octyl alcohol 2D 처리구는 19.7%로 무착과율이 높았다. 그리고 정화아에서 1과만 착과된 비율은 무처리구는 2.0%로 매우 낮았지만 octyl alcohol 2D 처리구는 23.6%로 높았다. 또한 3과와 4과 이상의 착과율을 보면 무처리구는 80.3%였으나, octyl alcohol 2D 처리구는 31.5%로 가장 낮았다. 그리고 꽃눈분화율과 과실품질은 무처리구와 적화제 처리구들 간에는 차이를 보이지 않았다. 따라서 옥탄올 처리는 무처리구와 비교하여 적화제로서 긍정적인 효과를 보여주었다.

키워드
중심과
꽃눈 분화
적화제
액화
정화
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :원예과학기술지
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 37
  • No :4
  • Pages :455-462
  • Received Date : 2019-04-16
  • Revised Date : 2019-05-21
  • Accepted Date : 2019-05-28
  • DOI :https://doi.org/10.7235/HORT.20190046
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