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김샛별(Sat-Byul Kim),오은의(Eun Ui Oh),박재현(Jae Hyun Park),윤수현(Su-Hyun Yun),오현우(Hyun Woo Oh),강종훈(Jong Hoon Kang),고상욱(Sang Wook Koh),오현정(Hyun Jeong Oh),송관정(Kwan Jeong Song) 한국원예학회 2012 원예과학기술지 Vol.30 No.6
The study was conducted to investigate the effect of fruit bearing type with leafy (LY) and leafless (LS) fruits on fruit growth, sugar, and acid characteristics in satsuma mandarin. Fruit growth including fruit length, diameter, shape index (diameter/length), weight, and size distribution was not different between LY and LS fruits at ripening time. Total soluble solids (TSS) concentration of the fruit juice increased and acidity decreased continuously and then TSS:acidity ratio increased with fruit development from 100 days after anthesis to ripening time. Soluble sugar was continuously increased, whereas organic acid decreased. Theses tendencies were related to the increase of sucrose and decline of citric acid, respectively. However, there was no effect of fruit bearing type on TSS, acidity, and TSS:acidity ratio, and soluble sugar and organic acid composition in fruit juice. Also, photosynthetic rate and chlorophyll index with SPAD value were not different between leaves adjacent to LY and LS fruits. The results indicated that fruit growth and sugar and acid characteristics were not affected by fruit bearing type with leafy and leafless fruits in satsuma mandarin.
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김샛별(Sat-Byul Kim),이경희(Kyung-Hee Lee) 동아시아식생활학회 2016 동아시아식생활학회지 Vol.26 No.4
This study investigated the quality characteristics of waffles added with coconut powder. Coconut powder was substituted into waffles at 0, 5, 10, 15, 20, and 25% weight amounts based on the total weight of wheat flour. The viscosity of batter tended to increase as the ratio of coconut powder increased whereas the measures of spreadability were not significantly changed. Baking loss rates tended to increase as the ratio of coconut powder increased while moisture contents were not significantly changed. The L-value and b-values decreased gradually while a-value increased. Among the textural characteristics hardness, springiness, chewiness, and gumminess tended to increase in proportion to the amount of coconut powder while cohesiveness and resilience were not significantly changed. The results of the sensory evaluation show that waffles made with 20% coconut powder were the most preferable in appearance, flavor, taste, texture, and overall acceptability.
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만다린 잡종에서 자연발생 배수체의 발생 빈도와 생장 특성
송관정(Kwan Jeong Song),김샛별(Sat Byul Kim),박재현(Jae Hyun Park),오은의(Eun Ui Oh),이경욱(Kyunguk Lee),김동욱(Dong Wook Kim),강종훈(Jong-Hoon Kang),김정순(Jeong-Soon Kim),오정환(Jeong Hwan Oh),Fred G. Gmitter 한국원예학회 2011 원예과학기술지 Vol.29 No.6
The study was conducted to determine the efficiency in producing spontaneous polyploids in some mandarin hybrids with different seed embryony. Seed formation by open pollination, frequency of spontaneous polyploids, and plant growth characteristics were evaluated in four mandarin hybrids with polyembryony such as Amakusa, Haruka, Hayaka, and Seminole and two with monoembryony such as Benibae and Harehime. The mean number of the developed seeds per fruit was 10.0 and frequency of small seeds was 25.1%. Polyploids were selected from plants germinated in vitro by a flow cytometry and confirmed by chromosome analysis. One triploid was produced from Harehime, one tetraploid, Amakusa, and one tetrapoid, Benibae. There were little differences in leaf shape, thickness, petiole length, and internode length between diploids and polyploids such as tri- or tetraploid. However, polyploids had larger stomata and lower density of stomata in abaxial epidermis than diploids. SPAS indicating chlorophyll con tent and photosynthetic rate were significantly affected by ploidy level. The results indicated that spontaneous polyploids might be produced by open pollination in some mandarin hybrids and monoembryony had higher frequency in polyploid occurrence than polyembryony.
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제주지역 차나무(Camellia sinensis L.) 품종 및 차기에 따른 신초 부위별 무기성분 특성변화
송인관(In Kwan Song),오은의(Eun Ui Oh),김샛별(Sat Byul Kim),윤정희(Jeong Hee Yoon),박재권(Jae Kwon Park),강성근(Sung geun Kang),송관정(Kwan Jeong Song) 한국차학회 2011 한국차학회지 Vol.17 No.3
제주지역 환경조건에서의 품종 및 차기별 신초부위에 따른 무기성분 변화를 분석하였다. 조생종 사에미도리, 중생종 야부기다 및 만생종 후.의 3개 품종에 대해 1번차, 2번차 및 3번차 시기에 심, 상위 1엽, 2엽, 3엽, 4엽, 5엽 및 줄기로 구분하여 조사하였다. 신초의 다량원소 함량은 T-N>K>Mg>Ca>Na 순이었고, 미량원소 함량은 Mn>Fe>Zn>Cu 순이었다. 품종간 차이는 T-N와 Mn에서 1번차기에 뚜렷하게 나타났고, 다른 차기와 성분 함량에 있어서는 거의 나타나지 않았다. 하위엽 일수록 함량이 뚜렷하게 낮아지는 성분은 T-N과 Zn이었으며, Ca는 뚜렷하게 증가하는 경향을 나타냈다. 나머지 성분은 엽위에 따른 차이가 거의 없는 편이었다. 차기에 따라서는 Fe, Mn 및 Na가 뚜렷한 함량 변화를 나타내었다. 그러므로 본 연구결과 품종, 차기 및 엽위에 따른 무기성분의 함량이 달라질 수 있어, 찻잎 수확시기 및 품질 결정시 이들 요인들을 고려해야 함을 제시하였다. The study was conducted to evaluate the changes of inorganic components in different shoot parts at different tea cultivars and plucking seasons in Jeju, Korea. The new growing shoots were plucked from ‘Saemidori’, early-maturing, ‘Yabukita’, mid-maturing, and ‘Hushun’, late-maturing at each plucking season and separated into seven parts with a bud, 1st leaf, 2nd leaf, 3rd leaf, 4th leaf, 5th leaf, and stem for analyzing inorganic elements. T-N content was the highest in macro elements, followed with K, Mg, Ca, and Na and Mn content was the highest in micro elements, followed with Fe, Zn, and Cu in order. There were significant and distinct differences in T-N and Mn contents just at the first plucking season in different cultivars, while little in the other elements at the other plucking seasons. T-N and Zn contents definitely decreased, while Ca content increased at lower parts. The others were hardly changed at different shoot parts. The content of Fe, Mn and Na was definitely differed at different plucking seasons. The results indicated that some inorganic element contents were affected by different cultivars, plucking seasons, and shoot parts and some inorganic elements might be major factors determining plucking time and tea quality.
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동질 사배체 탱자에서 염색체 배가와 수체 표현형의 변이
오은의(Eun Ui Oh),채치원(Chi-Won Chae),김샛별(Sat-Byul Kim),Jian Liang Lu,윤수현(Su-Hyun Yun),고상욱(Sang-Wook Koh),송관정(Kwan Jeong Song) 한국원예학회 2014 원예과학기술지 Vol.32 No.3
The study was conducted to investigate the possibility that epigenetic DNA methylation causes tree phenotypic variation in autotetraploids through evaluating the phenotypic variation and DNA methylation in autotetraploids occurred spontaneously from diploid trifoliate orange. Chromosome analysis confirmed that fourteen trifoliate orange trees of selected by flow cytometry were tetraploids (2n = 4X = 36) without any aneuploids. Chromomycin A3 staining determined that these trees were all autotetraploid with doubled chromosome set. Tree phenotypes, such as tree height and width, branching number, length, and angle, internode length, and leaf characteristics, varied in the autotetraploids. Chlorophyll indices were diverse in the autotetraploids, but photosynthetic rates were not significantly different. In addition, a wide range of variation was observed in stomatal density and guard cell length. Analysis of global cytosine DNA methylation showed that there was a variation of the methylation level in autotetraploids. More than half of 14 autotetraploids had at least 2 times higher methylation level than diploid trifoliate orange. The results indicate that tree phenotypic variation in autotetraploids might be related to global DNA methylation for reducing gene redundancy.
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