• 원예과학기술지
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• 제33권1호
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• pp.11-17
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• 2015

The study was conducted to investigate the effect of rootstock on growth and early yield of stenting-propagated cut roses (Rosa hybrida Hort.) 'Pink Aurora' and 'Yellow King'. The scions, prepared as single-node cuttings, each with a five-leaflet leaf, were grafted onto cuttings of Rosa indica 'Major', Rosa multiflora 'Chille Wonye No. 1', Rosa multiflora 'K-1', or Rosa multiflora 'Burr' as the rootstock. The rootstock cuttings were removed of all leaves and buds before grafting. The base of scion and the top of rootstock were held together and simultaneously cut at a $45^{\circ}$ angle for ease of grafting. Scion-rootstock unions were stuck in rockwool cubes and placed on a misted glasshouse bench for rooting before being transplanted into a rockwool slabs for cultivation. Rooting was the greatest in the 'Pink Aurora' and 'Yellow King' grafted on the rootstock Rosa indica 'Major'. In 'Pink Aurora', stem length, stem diameter, five-leaflet leaves per stem, and stem fresh weight of the harvested cut flowers were not affected by the rootstock. The greatest total yield of 'Pink Aurora' was obtained in plants grafted onto the Rosa indica 'Major' rootstock. Overall growth of 'Yellow King' was the greatest in plants grafted onto Rosa multiflora 'Burr' rootstock, although total yield was not affected by the rootstock. These results suggest that Rosa indica 'Major' is the most effective rootstock not only for rooting, but also for early yield and growth for stenting propagation of these cut roses.

• 한국육종학회지
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• 제43권6호
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• pp.568-571
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• 2011

'Green Dream' 품종은 국립원예특작과학원에서 2009년도에 육성한 포인세티아 품종이다. 이 품종은 2006년에 진한 녹색잎에 초장이 짧고 아담한 연황색의 'Lemon Snow'를 모본으로, 생육이 왕성하고 진한 분홍색인 'Freedom Rose'를 부본으로 인공 교배하여 양성된 실생계통이다. 2007년과 2008년 2차에 거쳐 특성검정을 하여 '원교 D5-64'를 육성하였고 2009년에 3차 특성검정과 품평회를 실시하여 최종선발 하였으며, 농작물 직무육성 신품종선정위원회를 거쳐 '그린드림 (Green Dream)'으로 명명하였다. 포엽의 형태는 난형이며 포엽의 엽맥 사이에 중간 정도의 주름이 있고 포엽의 색상은 밝고 연한 황록색이다. 잎몸은 난형이며 진한 녹색이고 엽절이 적으며 엽병이 길다. 줄기 색은 녹색계이며 적심을 하지 않은 상태에서도 분지가 발생하고 줄기의 수는 중간이다. 초장은 크며 단일처리 후 약 7주일이 경과하면 완전히 착색되어 출하가 가능하다.

• 한국작물학회지
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• 제30권1호
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• pp.1-6
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• 1985

Burley종 잎담배 건조시 광질별에 따른 백화엽 발생 정도를 밝혀서 차광재료의 개발 및 백화엽 발생방지를 위하여 투명비닐 하우스에 8가지의 유색비닐을 피복하고, 여기에 수확 후 건조과정별로 잎담배를 처리하였다. 또한 자외선과 적외선의 단독 영향을 보기 위하여 1.2$\times$l.2$\times$l.2m 상내의 70cm높이에서 각각 조사하였던 바 그 결과는 다음과 같다. 1. 백화엽 발생은 엽분별로 하엽>중엽>본엽 순으로 하위엽일수록 발생량이 많았다. 2. 백화엽은 중골건조 이후부터 발생되었으며 중골건조 20일 후에는 투명비닐하우스에서 50% 정도가 발생되었 다. 3. 유색비닐 하우스별 백화엽 발생은 그 차이가 없이 모든 유색비닐에서 10% 미만으로 거의 발생되지 않았다. 4. 태양광 의한 유색비닐의 색상 안정도는 흑색=백색>황색>적색비널 순으로 컸으나 적색비닐은 탈색되고 갈라져서 여름의 강광하에서는 2개월 이상 유지 보존이 어려웠고. 백색비닐도 탈색은 되지 않았으나 내구성이 약하였다. 5. 유색비닐 중 흑색비닐에 가까울수록 건조기간이 길었고 건엽 색상은 약간 검었으나 품질은 차이가 없었다. 6. 자외선은 투명비닐에서 대부분 투광되었으나 유색비닐에서는 거의 차광되었고 그 차는 뚜렷하지 않았다. 7. 백화엽 발생은 주로 자외선에 의하여 발생되었고, 적외선은 거의 영향을 미치지 않는 것으로 보였다.

• 한국응용곤충학회지
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• 제20권4호
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• pp.191-195
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• 1981

모자익병징을 나타내는 호박, 박, 오이, 참외, 수박의 박과작물에서 Watermelon Mosaic Virus(WMV)를 분리동정하였다. 이병주로 부터 분리된 WMV는 복숭아혹진딧물(Myzus persicae, Sulzer)에 의해 쉽게 충매전염되었고 종자전염은 되지 않았다. 지표식물검정결과 명아주에서는 접종엽에 대형의 국부병반이, 호박, 박, 오이, 참외, 수박에서는 접종상엽에서 모자익병반이 나타났고 담배(Nicotiana tabacum, Bright yellow), 담배 (Nicotanan glutinosa), 동부, 페추니아, 독말풀에서는 반응이 나타나지 않았다. WMV isolate의 물리적 성질은 내열성 $55\~65^{\circ}C$, 내희석성 $10^{-4}\~10^{-5}$배, 내보존성 $7\~8$일간이었다. WMV isolate의 항혈청반응은 미량침강법에서 양성으로 나타났고 바이러스립자의 형태는 전자현미경검경결과 대부분이 750nm의 사상입자이었다. 이상의 시험결과로 박과 작물에서 분리한 바이러스가 WMV 임이 확인되었다.

• 한국환경농학회지
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• 제19권2호
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• pp.154-159
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• 2000

대기환경오염원인 오존을 벼와 콩에 처리하여 오존피해증상, 품종간 저항성 차이 및 유전양상을 밝히고자 가시피해, 피해엽율, 엽록소함량, 임실율 등을 조사한 결과를 요약하면 다음과 같다. 벼의 오존피해증상은 피해정도에 따라 잎에 작고 붉은 반점이 형성되거나 잎전체가 적갈색 또는 황백색으로 변색되며 잎끝부터 말리면서 고사하였다. 콩은 피해엽이 황백색 또는 흑갈색으로 변색되었으며 벼와 콩 모두 잎의 표면보다는 이면이, 신엽보다는 하위엽에서 뚜렷하게 나타났다. 벼의 오존저항성 정도는 밀양 23호와 농안벼가 저항성을, 추청벼가 감수성으로 조사되었다. 오존처리시간이 2시간에서 8시간으로 길어짐에 따라 벼의 피해엽율은 증가하였고 엽록소함량은 감소하는 경향이었지만 그 정도는 품종에 따라 다르게 나타났다. 콩의 품종별 오존저항성정도는 큰올콩과 단엽콩이 저항성을, 두유콩, 무한콩, 은하콩 및 푸른콩 등이 감수성으로 나타났다. 콩의 생육시기별 피해엽율은 품종에 따라 다소 다른 경향이었으나 대체로 파종후 45일 처리에서 피해엽율이 가장 높았다.

• 한국의류산업학회지
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• 제19권4호
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• pp.486-492
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• 2017

This study finds surface color and functions of natural dyeing from Chamaecyparis obtusa leaves which help cure skin problems such as atopic dermatitis. This study also seeks to find dyeing properties and functions of natural colorants derived from Chamaecyparis obtusa and Rubia tinctorum on silk. Dyeing properties and functions are compared between silks dyed with Chamaecyparis obtusa and silks composite-dyed with Chamaecyparis obtusa and Rubia tinctorum. The comparison examines the feasibility of developing healthy and high functional fabrics and wellness of fashion merchandises. Silk dyeing with Chamaecyparis obtuse leaves yields yellow and double coloring from Chamaecyparis obtusa; however, Rubia tinctorum yields yellow/red on silks. Silks dyed with Chamaecyparis obtusa and silks composite-dyed with Chamaecyparis obtusa and Rubia tinctorum show a high level on dry cleaning, ultraviolet protection and deodorization. Especially, the dyed silks from leaves of Chamaecyparis obtusa show a 99.7% antimicrobial effect against staphylococcus aureus ATCC 653B. Silks composite-dyed with Chamaecyparis obtusa and Rubia tinctorum are better known for medicinal herb for dermatitis, and natural colorant, Rubia tinctorum does not improve significantly functions compared with silks dyed with Chamaecyparis obtusa. However, the dyeing properties improve by composite dyeing. This implies that ways to maximize effects of tie-dyeing technique could be developed.

• 한국염색가공학회지
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• 제28권4호
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• pp.290-298
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• 2016

In this study, the efficacy of water lily(Nymphaea tetragona) leaves as a new natural dye resource was investigated. For this purpose, the colorants from water lily leaves were extracted in methanol, evaporated, and powdered. Dyeing onto cotton fiber was carried out to study the effects of dyeing conditions, mordant type and mordanting method on dye uptake, color change, and colorfastness. FTIR analysis supported that hydrolyzable tannins and chrolophyll were contained in the extracted colorants. The colorants showed good affinity to cotton fiber showing Y Munsell color. Pre-mordanting method gave better results in terms of dye uptake than post-mordanting method. By mordanting, dyed fabrics exhibited various colors such as green, khaki, brownish yellow, dark brown, dark gray and so on. Colorfastness to washing and rubbing was relatively good showing 4-5 rating. The light fastness was improved 1-2 rating by Fe mordanting. The dyed cotton fabric showed antimicrobial activity.

• 한국염색가공학회지
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• 제21권6호
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• pp.29-38
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• 2009

Natural dyes seem to be more profitable on human and environment, and recently they could be considered as a better alternative to synthesized dyes. The aim of the current work was to investigate the dyeing property and antimicrobial activity of commercial cotton fabrics dyed with kumazasa (usually called in japan) which is known as conventional japan bamboo leaves. Actually, the dyeability and antimicrobial property of dyed fabric with natural mordant/dyeing was compared with synthetic mordant/dye process. The results of this study obtained are as follows. The apparently colour of kumazasa leaves extract dyed fabrics showed with light green or slightly yellow-green. In colorfastness to washing, ${\Delta}E$ and K/S values of dyed fabrics with natural chitosan as mordant used was shown to be more excellent results, than was synthetic mordant used. However, the decrease rate was recorded nearly 50% when washing repeated 20 cycles. In result of antimicrobial effect for bacteria, the dyed fabrics didn't show the significant antimicrobial activity to the both dyed with and without mordant. Results of this investigation considered that low-cost, natural, bio-mordant are relatively effective in natural coloration.

• Journal of Plant Biotechnology
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• 제48권1호
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• pp.44-53
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• 2021

The present work aims to study the induction of somatic embryogenesis in cork oak (Quercus suber L.) from immature zygotic embryos and young apical leaves obtained from 2-month-old seedlings through acorn germination on sterilized peat. The immature zygotic embryos were grown for 1 month on the mineral solution of MS in the presence of 4.52 µM 2,4-D and 30 g/L sucrose. They were then transferred to the same mineral solution with no added growth regulators. In the third subculture, yellow somatic embryos, characterized by two voluminous cotyledons, were differentiated from the radicle of the immature zygotic embryos. The induction of somatic embryogenesis in young leaves required a series of transfers on different culture media containing 30 g/L sucrose and 100 mg/L myo-inositol. Secondary or recurrent somatic embryogenesis occurred within the immature somatic embryo radicles after 1 month of culture on growth regulator-free medium containing WPM macronutrients, MS micronutrients, and vitamins.

• Asian-Australasian Journal of Animal Sciences
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• 제20권8호
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• pp.1208-1214
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• 2007

Three male Gayal, two years of age and with a mean live weight of $203{\pm}26$ kg, and three adult Yunnan Yellow Cattle, with a mean live weight of $338{\pm}18$ kg were fed a ration of pelleted lucerne hay and used to collect rumen fluid for in vitro measurements of digestibilities and gas production from fermentation of a range of forages. The forages were: bamboo stems, bamboo twigs, bamboo leaves, rice straw, barley straw, annual ryegrass hay, smooth vetch hay and pelleted lucerne hay. There were significant (p<0.05) effects of the source of rumen fluid on in vitro dry matter digestibility (IVDMD) and gas production during fermentation of forage. For the roughage of lowest quality (bamboo stems and rice straw), gas production during fermentation was higher (p<0.05) in the presence of rumen fluid from Gayal than Yunnan Yellow Cattle. Differences for these parameters were found for the better quality roughages with gas production being enhanced in the presence of rumen fluid from Yunnan Yellow Cattle. Moreover, the IVDMD of investigated roughages was significantly higher (p<0.05) in Gayal than Yunnan Yellow Cattle. The results offer an explanation for the positive live weight gains recorded for Gayal foraging in their natural environment where the normal diet consists of poor quality roughages.