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Byul-Ha-Na Lee(이별하나),Yong-Hee Kwon(권용희),Kyoung-Hee Shin(신경희),Hee-Seung Park(박희승) 한국원예학회 2010 원예과학기술지 Vol.28 No.3
Preharvest treatment with 4% ethyl oleate on ‘Merlot’ (Vitis vinifera L.) grape reduced the thickness of the epidermal and hypodermal layers with significantly enhanced pigmentation. Thickness of the skin in treated berries was 90-107 ㎛, whereas those in control berries were 126-189 ㎛. Decreases in the thickness of epidermal and hypodermal cell layers seemed to be due to cellular death or dehydration by rapid senescence after the treatment. Immediate change observed in treated berries was the deformation of the wax that appeared melted resulting in color improvement. Total anthocyanin was also increased by ethyl oleate treatment. Separate forms of anthocyanins, acylated and methoxylated anthocyanins increased, whereas hydroxylated anthocyanins tended to decrease.
이별하나,권용희,신경희,박희승,Lee, Byul-Ha-Na,Kwon, Yong-Hee,Shin, Kyoung-Hee,Park, Hee-Seung Korean Society of Horticultural Science 2010 원예과학기술지 Vol.28 No.3
'Merlot' 포도 품종의 수확전 ethyl oleate 처리는 외표피와 아표피의 두께를 감소시키며 착색을 현저히 향상시킨다. 무처리구의 과피 두께는 $126-189{\mu}m$인데 반하여 처리 과실의 과피두께는 $90-107{\mu}m$로 조사되었으며, 이러한 외표피와 아표피 층의 두께 감소는 처리 후 외표피와 아표피를 구성하는 세포의 빠른 노화에 의하여 세포가 죽거나 탈수가 나타나기 때문인 것으로 조사되었다. 처리 후에 빠르게 과피 표면의 왁스층이 녹은 듯한 형태를 보이며 이는 착색을 증진시키는 것으로 관찰되었으며, 전체적인 안토시아닌 함량 역시 증가하는 것으로 조사되었다. 반면에 각각의 안토시아닌 함량에 있어서는 메톡시기와 결합하거나 유기산과 결합한 안토시아닌이 증가한 반면 수산기와 결합한 안토시아닌은 감소하는 경향이었다. Preharvest treatment with 4% ethyl oleate on 'Merlot' ($Vitis$ $vinifera$ L.) grape reduced the thickness of the epidermal and hypodermal layers with significantly enhanced pigmentation. Thickness of the skin in treated berries was $90-107{\mu}m$, whereas those in control berries were $126-189{\mu}m$. Decreases in the thickness of epidermal and hypodermal cell layers seemed to be due to cellular death or dehydration by rapid senescence after the treatment. Immediate change observed in treated berries was the deformation of the wax that appeared melted resulting in color improvement. Total anthocyanin was also increased by ethyl oleate treatment. Separate forms of anthocyanins, acylated and methoxylated anthocyanins increased, whereas hydroxylated anthocyanins tended to decrease.
환상박피처리에 의한 ‘거봉’ 포도의 과실 품질 및 동해 피해
권용희(Yong Hee Kwon),이별하나(Byul Ha Na Lee),심성보(Sung-Bo Shim),신경희(Kyoung-Hee Shin),정규환(Kyu Hwan Chung),최인명(In-Myung Choi),박희승(Hee-Seung Park) 한국원예학회 2011 원예과학기술지 Vol.29 No.2
The effects of girdling on fruit quality and cold resistance of ‘Kyoho’ grapes were investigated. Girdling treatment was conducted on the trunk at 10 ㎝ above ground with 1 cm width and grapes were harvested at 90 and 110 days after full bloom to compare the fruit quality. First harvesting rate in girdling treatment was higher than that in non-girdling treatment and coloration was also higher in girdled vines at the final harvest. In other words, coloring process of grape was promoted and enhanced by girdling, but this effect of coloring improvement was decreased after successive girdling treatment. Fruit quality showed no difference between the treated and non-treated berries, but fruit cracking rate was lower in girdled treated berries. Girdled trees were weakened and suffered from freezing damage. Especially, most grapevines withered up after being girdled for three consecutive years. Although girdling had effect on improving the berry coloring significantly, the effect wore off with continuous girdling. And it was possible that consecutive girdling leaded to wither and growth suppression especially in grapevines. These adverse effects may make the continuous girdling technique unsuitable in practice for ‘Kyoho’ grape.