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2022 Vol.40, Issue 2 Preview Page

Research Article

Fruit Quality in ‘Hongro’ Apple Affected by Porous Film Mulching and K2SO4 Foliar Spray

다공질필름 멀칭과 황산칼륨 엽면살포에 의한 ‘홍로’ 사과의 과실품질

Young Ji Moon12
,
In Kyu Kang2
,
Byung Woo Moon1*
문 영지12
,
강 인규2
,
문 병우1*
1MᐧHorticultural Technique Research Institute, Suwon 16642, Korea
2Department of Horticultural Science, Kyungpook National University, Daegu 41566, Korea
1엠·원예기술연구소
2경북대학교 원예과학과
*Corresponding Author
30 April 2022. pp. 199-209
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Abstract

We investigated the effects of coloring agent and potassium sulfate (K2SO4) foliar sprays, and reflective aluminium and porous film covering on the orchard floor on the enhancement of red peel coloration in ‘Hongro’ apples. Foliar spray of coloring agent and potassium sulfate, and reflective aluminium film mulching before harvest increased the Hunter a value and anthocyanin content of fruit peels at harvest. In addition, micro-porous film mulching had the best effect on promoting red peel coloration in the fruits in the lower and inner canopy, non-colored fruit parts, and fruit calyx-end part due to improved light irradience. Although no statistical differences were detected in fruit weight, firmness, and acidity at harvest, the soluble solids content (SSC) of fruits was increased by coloring agent foliar spray. Reflective aluminium film mulching had the highest incidence of fruit sunscald at harvest. However, porous film mulching did not affect the sunscald occurrence of control fruit. Therefore, the result indicated that porous film mulching at 20 or 30 d before harvest is the most effective for promoting red peel coloration.

Keywords
anthocyanin
coloring agent
light intensity
reflective aluminium film
soluble solids

사과 홍로 품종을 대상으로 적색 착색 촉진을 위하여 수확 전 착색제(ACT-2), 황산칼륨(K2SO4) 엽면살포 및 미세다공질필름 멀칭효과를 조사하였다. 수확 전 20–30일에 착색제 및 황산칼륨 엽면살포, 알루미늄반사필름 멀칭 또는 황산칼륨 엽면살포 후 미세다공질필름 멀칭은 과피의 Hunter a값 및 anthocyanin함량을 증가시켰다. 또한 미세다공질필름 멀칭은 광 환경 개선으로 수관하부 과실, 과정부 및 비착색부에서 적색 착색을 촉진하는 효과가 있었다. 수확 시 과중, 경도, 산함량은 처리에 따른 일관된 차이가 없었으나, 가용성고형물은 착색제 수체살포에 의해 증가 하였다. 수확시 일소과 발생은 알루미늄반사필름 멀칭이 다른처리에 비하여 현저하게 증가시켰으나, 미세다공질필름 멀칭은 대조구에 비해 차이가 없었다. 따라서, ‘홍로’ 사과에서 수확 20, 30일 전 미세다공질필름 수관하부 멀칭은 수확 과실의 우수한 적색 착색의 효과를 나타내어 활용가치가 있었다.

키워드
가용성고형물
안토시아닌
알루미늄반사필름
조도
착색제
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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 40
  • No :2
  • Pages :199-209
  • Received Date : 2021-07-13
  • Revised Date : 2022-01-17
  • Accepted Date : 2022-02-03
  • DOI :https://doi.org/10.7235/HORT.20220019
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