최근, 웰빙 추세에 적합한 재료의 하나인 식용꽃의 향기성분들을 분석하여 유효 기능성분들을 검색하고 체 계적으로 확립하여 식용꽃의 이용 가능성을 높이고자 수행하였다. 식용꽃 6종 금어초(노랑, 자주), 금잔화, 패랭이(빨강, 보라), 한련화(노랑, 주황), 비올라(노랑, 보라), 팬지(노랑, 보라) 등 11종류에 대하여 Headspace SPME 방법을 이용한 향기성분 분석결과는 다음과 같다. 금잔화(α-Thujene, α-Pinene 등 18종), 팬지 노랑 계열(β-Sesquiphellandrene 등 5종), 비올라 노랑 계열(β-Sesquiphellandrene등 15종), 보라 계열 (Germacrene d10종), 금어초 빨강 계열(β-Myrcene 1 종), 한련화 빨강 계열(2종)의 향기성분이 나타났으며, 팬지 보라계열, 패랭이, 금어초 노랑 계열, 한련화 빨 강 계열은 유효성분이 없었다. 식용꽃에서는 세포생성 및 재생에 효과적인 α-Thujene, 피로경감에 도움이 되 는 α-Pinene, 음식의 향료로 사용되는 limonine 등이 다량 함유되어 있는 것으로 분석되어 기능성 물질 이 용의 가치가 클 것으로 기대한다.

C3식물과 CAM식물에 광량을 달리 처리하여 음이온 발생량을 조사하였다. C3식물은 0, 20, 100, 200(µmol·m-2·s-1)의 광량이 주어졌으며, CAM 식물에는 주간과 야간에 음이온 발생량을 측정하였다. C3식물의 광량별 음이온 발생량은 관음죽(300/cm3), 팔손이나무(497/cm3), 로즈마리(735/cm3) 3종 모두 20µmol·m-2·s-1에서 가장 높게 나타났으며, 20µmol·m-2·s-1이상의 광량에서는 감소하는 경향을 보였다. CAM 식물의 음이온 발생은 주간과 야간에 비슷하게 양이 발생하였으며, C3 식물에 비해 매우 적은 양이 발생하였다. CAM 식물 중에 음이온 발생량은 금전수가 가장 많고, 산세베리아가 가장 적었다. 결과적으로 C3 식물의 음이온 발생량은 20µmol·m-2·s-1 에서 가장 많았으며, CAM 식물의 음이온 발생량은 C3 식물에 비해 매우 적고, 주간과 야간에 비슷한 양이 발생하였다.

"홍영"은 2003년 "대서" 품종과 AG34314 계통 간의 교잡후대에서 유래되었으며, 고령지농업연구소의 감자육종 프로그램을 거쳐 선발되었다. 2006년과 2007년 대관1-102호라는 계통명으로 지역적응시험을 수행하여 주요 생육특성, 괴경특성, 수량성 및 병해특성을 평가하였으며, 2007년 "홍영"으로 명명하여 국립종자관리원에 신품종으로 원하였다. "홍영" 감자는 모양이 둥글고 눈이 얕으며 껍질과 속이 모두 홍색이다. ha당 평균 수량은 37.4톤이

A resveratrol synthase (RS) gene was isolated from peanut (Arachis hypogaea, L. cv. Jinpoong) plants. This gene was placed under the control of the cauliflower mosaic virus 35S promoter (CaMV35S) and introduced into two Korean varieties of potato (Solanum tuberosum L. cvs. Jasim and Jowon) plants by Agrobacterium-mediated gene transfer. Putative transformants were screened by PCR with primers designed from CaMV 35S promoter, NOS terminator and RS gene. Most of selected transgenic potato plants showed the amplification of expected fragments by PCR of genomic DNA with gene-specific primers, while they were absent in untransformed control plants. Expression of the resveratrol synthase gene was also examined by northern blot analysis. The transformants showed a band which was lacking in the control plant, confirming that the introduced gene is transcribed into mRNA in the transformants. The strength of the band, which reflected the level of mRNA expression, differed among the individual transformants. Among the transformants obtained, the highest trans-resveratrol content in the transgenic young leaves of purple-fleshed "Jashim" was 2.11 μgg-1 fresh weight and that in the microtubers in vitro of purple fleshed "Jashim" was 8.31 μgg-1 fresh weight. This amount of resveratrol may have a positive biological effect on human health.

자영'은 2003년 '대서' 품종과 AG34314 계통 간의 교잡 후대에서 유래되었으며, 국립식량과학원 고령지농업연구센터의 감자육종 프로그램을 거쳐 선발되었다. 2006년과 2007년 대관1-104호라는 계통명으로 지역적응시험을 수행하여 주요 생육특성, 괴경특성, 수량성 및 병해특성을 검토하였으며, 2007년 '자영'으로 명명하여 국립종자관리원에 신품종으로 출원하였다. '자영' 감자는 모양이 비교적 둥글고 눈이 얕으며 껍질과 속이 모두 자주색이다. ha

"Chuyoung" as a new double cropping potato variety was bred in 2005 for table use through a cross between "Dejima" with short tuber dormancy and HRB-31 which is a tetraploid derived from an interspecific cross between "Russet Burbank" and Solanum phureja line. It was evaluated for short dormancy, growth and tuber characteristics every twice a year from 1997 to 2001. Regional yield trials were performed from 2002 to 2004 at three locations, Jeju, Namhae and Gangneung of Korea, respectively. Its tuber shape is oblong with yellow skin and flesh colors. Its dormant periods is 60~70days. It showed less incidence of physiological disorders such as cracking or knobs on tubers, and higher resistance to common scab by Streptomyces scabies compared to "Dejima". It has tall plant height and erect growth type with green-broad leaflets and white large inflorescence. Its average yields are 29.5 and 22.6 ton/ha at 90 days after planting in spring and autumn cropping, respectively. It also showed higher marketable yield due to the lower incidence of common scab and physiological disorders compared to "Dejima".

"Chugang" as a new double cropping potato variety for table use was bred in 2003 from a cross between H83005-2 with short dormancy and "Superior" with common scab resistance. It had been evaluated for short dormancy, growth adaptability and tuber characteristics every twice a year from 1990 to 1999. Regional yield trials had been performed from 2000 to 2002 at three locations, Jeju, Namhae and Gangneung of Korea, respectively. It has round oblong tuber shape with yellow skin and white flesh color. Its tuber dormant periods is approximately 50~60 days. It showed less physiological disorders such as cracking or knobs, and more tolerant to environmental stresses such as plant death by flooding and damages by frost or severe wind compared to "Dejima". Average yields of "Chugang" are 34.6 and 31.1 ton/ha at 90 days after planting in spring and autumn cropping, respectively. It is more resistant to common scab and less susceptible to late blight (phythophthora infestans) compared to "Dejima". However, it is susceptible to potato virus Y (PVY) and andean mosaic virus (AMV).

Lately, the autumn cropping areas of potato have been steadily increased to supply fresh potatoes all year round in Korea. Although "Dejima" is a main cultivar for autumn cropping, it is very susceptible to common scab (Streptomyces scabies) and show high frequency of physiological disorders such as knobs and cracking on tubers. "Chudong" was bred in 2002 for fresh table use from a cross between H83520-3 with short tuber dormancy and "Superior" with common scab resistance. It has attractive, round tuber shape with white skin and flesh colors. Its tuber dormant periods is 5 days longer than 65 days of "Dejima". Its average yields were 32.4 and 21.8 ton/ha at 90 days after planting in spring and autumn cropping of regional yield trials, respectively. It is more resistant to common scab and potato leaf roll virus and less susceptible to late blight (Phythophthora infestans) compared to "Dejima". However, it is susceptible to potato virus Y.

‘Seohong’ was bred within the potato breeding program of National Institute of Highland Agriculture (NIHA). It was originated from a cross made in 1997 between ‘Jashim’ as a female and 93K65-1 as a male parent. Seohong was evaluated as a seedling number 97S05-1 for tuber characteristics, growth and yielding ability from 2001 to 2002, and than this clone was renamed as Daegwan 1-82. This clone was evaluated in the regional yield trial and the disease resistance in the five locations for three years. Finally, this clone was named as ‘Seohong’ and registered a new recommended potato cultivar in 2006. This cultivar has a round, shallow eye depth, light red-skinned tuber characteristics and low to medium dry matter content. It showed high resistance to common scab (Streptomyces scabies) and potato leaf roll virus (PLRV), however it was susceptible to potato virus Y (PVY) and late blight (Phytophthora infestans). Its mean tuber yields from the regional yield trial and winter cropping trial were 12 and 49 percent higher than that of ‘Superior’, respectively.

We performed field trials to assess levels of changes in intrinsic properties and resistance against soft rot of the potato cultivar ‘Irish Cobbler’ upon the introduction of the Shiva-1 gene. Each five lines, transformed with Shiva-1 gene controlled by the PAL5 promoter (P) and by the CaMV 35S promoter (E) were evaluated in the field. In based on evaluation of 10 defined morphological characteristics, all the transgenic clones of both lines proved to be true to type. When five agronomic characteristics were taken into account as well, all the transgenic lines except E8 were considered to be true to type. According to the result of northern blot analysis, seven (P1, P3, P4, P6, E10, E12, and E16) transgenic clones could be distinguished clearly from corresponding untransformed clones. But in three lines (P8, E5, and E8), no hybridization signal was detected. There seems to be positive correlation between the levels of resistance to soft rot and the transgenic expression at mRNA levels in P lines. But in the case of E lines, however, there doesn’t seem to be any correlation between the levels of disease resistance and mRNA expression

The experiment was conducted to improve the selection efficiency m the first generation through the analysis of variation pattems of major tuber characteristics when raising hybrid seedling using the different plug cell size. The correlations in related t