• 한국연초학회지
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• 제17권1호
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• pp.27-32
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• 1995

A new flue-cured tobacco mutant line BU 8832-85 was developed at Taegu Experiment Station, Korea Ginseng and Tobacco Research Institute in 1994. KF 8832-85 was resulted from a cross of flue-cured cultivars NC 95$\times$NC 2326, and developed by a pedigree system of breeding ; initial selection was made by plant type and resistance to bacterial wilt(BW) disease(heudomonas solanaceamm) in the F2 generation under the natural field conditions infested with the pathogen. One white flowered plant was occurred by spontaneous mutation in a certain line among the F3 generatioin while the others were pink. Six plants from the seeds by selfing were selected at the field infested with the pathogen among 240 populations with white flowering in the F4, KF 8832-85 was selected based on yield and leaf quality trials among 6 lines in Fs generation. BCF 8832-85 was compared with its Parent for certain agronomic and chemical characteristics at Taegu Experiment Station in 1993 and 1994. The results showed that KF 8832-85 have white flower, the stalk height was approximately that of NC 2326 but averaged about loom taller than NC 95. It produced ground suckers as much as NC 95, and did not breakdown leaf at the same as WC 2326. KF 8832-85 have high resistance to bacterial wilt disease. Yield of KF 8832-85 was 10 and 18% higher then that of NC 2326 and WC 95, respectively. Price per Kg was equal to that of NC 2326. The contents of nicotine and reducing sugar did not differ significantly from NC 95, while total nitrogen was significantly lower than NC 95. Therefore, the new mutant line is genetically stable for agronomic and chemical characteristics and provides a source of bacterial wilt disease resistance for use in breeding resistant flue-cured cultivars. Key words : Mutant line, White flower, Spontaneous mutation.

• 한국연초학회지
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• 제21권1호
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• pp.10-16
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• 1999

Leaves harvested were separated with visual characters into 2 classes such as immature and mature leaves. In the curing process, the prolonged yellowing treatment during yellowing stage was automatically controlled at the different stalk position, and condition of curing process after this period was all the same with conventional ones. In case of prolonged yellowing in immature leaves, increase of price per kg reached to 8 % compared with those of conventional ones. In physical properties, filling capacity and shatter index was decreased with the degree of maturity, and it was equal level in filling capacity of immature leaves between curing method, while shatter index was decreased in prolonged yellowing treatment than that of conventional ones. There was no difference in chemical components between immature leaves of prolonged yellowing and conventional ones. As to the prolonged yellowing of immature leaves, there was decreased in citric and malic acid contents of the nonvolatile organic acids, and it was equal level in all higher fatty acids content of leaves cured by prolonged yellowing treatment compared with in that of conventional curing method. The contents of key compounds such as solanone, damascenone, damascone in the essential oil were lower in prolonged yellowing of immature leaves than those of mature leaves cured by conventional ones.

• 한국연초학회지
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• 제21권1호
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• pp.5-9
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• 1999

In recent years, the line of increase in policy on tobacco production triggered a rise in the loading volume per bulk curing barn, and manufacturers boosted the output of their blowers in order to prevent dirty leaves in the process of curing. for this reason, we studied the effect of the reducing air flow in bulk curing chamber from the color fixing stage to the stem drying stage of flue curing process on physical properties of cured leaves. The control of air flow was composed of the reducing air velocity of blower by means of a voltage regulator (slidac), and condition before color fixing stage was all the same with the conventional curing method. As a result, an effectiveness of improvement in the physical properties of cured leaves were observed. The leaves cured by this method were somewhat orange in color of upper stalk position, better bodied, and less brittle compared with the leaves produced by conventional curing. However, the leaves cured by this method had a little sharpness and harshness. As to the physical properties, there was decreased in occurrence of flat leaves than that of conventional ones. On the other hand, in case of reducing air flow during the curing process, increase of price per kg reached to about 5 % compared with those of conventional curing method.

• Journal of Ginseng Research
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• 제20권2호
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• pp.188-192
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• 1996

Export amount and price of P. quinquefolium of United States during 1990 to 1994 were briefly introduced. Export tended decreasing especially to Europe. Middle and South America appeared to be new market. Ginseng Board of Wisconsin Inc. and its Wisconsin seal program to curb Kinase white root were introduced.

• 한국연초학회지
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• 제29권2호
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• pp.66-73
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• 2007

This study was carried out to investigate the changes of curing condition on microclimate of temperature, relative humidity during curing process of burley tobacco leaves. The developed facility, ridge opening type was designed to open the central top roof. The air-cured variety, (N. tabacum cv KB111) was normally grown at the Eumseong tobacco experimental station in 2007. Mean daily temperature of $3^{\circ}C$ in ridge opening type curing facility was lower than that of conventional, whereas mean daily relative humidity of 12.6 % RH was lower in conventional curing facility for the entire stage of curing. The frequency distribution of optimal air temperature at daytime was higher 37.5 % in ridge opening type curing facility than that of conventional, while that of optimal relative humidity was lower 8.2 %. In the ridge opening type curing facility, the excessive drying leaves were low, however the price per kilogram was high. These results suggest that the new developed curing facility may be applied to improved microclimate inside the curing facility for curing burley.

• 한국작물학회지
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• 제31권2호
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• pp.231-237
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• 1986

향미종 연초 재배에서 재식밀도 및 질소 시비량에 따른 생육특성 및 수량, kg당 가격과 향미종 연초의 특징인 휘발성 유기산 함량의 관계를 분석, 재배법에 활용코자 시험한 결과, 1. 10 a당 13,885주에서 24,997주로 밀식할수록, 주당 생장량은 감소하나 LAI는 증가하였으며 수량은 21.875주까지 유의성 없이 증가하였으나 그 이하에서는 증가를 보이지 않았다. 2. 10a 당 질소 시비량을 1.5, 3.0, 4.5kg 증비 할수록 주당 생장량, 잎의 크기 및 LAI가 증가하고 수량 및 kg당 가격이 유의하게 증가하는 경향이였다. 3. 발뢰 7 일 전 엽중 질소 함량은 처리간 차를 나타냈으나, 건조엽중의 질소, 환원당, 니코딘 함량에서는 재식밀도 및 질소수준간 일정한 경향을 보이지 않았다. 4. 초장 및 엽의 크기가 작을수록 건조엽중 2-methyl butanoic, 3- methyl butanoic 및 3- methyl pentanoic acid의 함량이 높은 경향이었으며, 5. 건조엽중 휘발성 유기산 함량과 개화기의 초장(r=-0.49), 최대엽장(r=-049), 일주당 엽면적(r=-0.47)은 유의한 부의 상관을 보였다. LAI 및 단위엽면적당과는 각각 유의한 상관을 보이지 않았다.

• 한국작물학회지
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• 제56권2호
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• pp.146-150
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• 2011

버어리종 잎담배 질소화합물 저감 및 이용성 향상을 위해 순지르기 시기(발뢰기, 개화시, 개화기 순지르기)와 수확시기 (미숙엽, 적숙엽, 과숙엽 수확)에 따른 건조엽의 질소화합물, 총 TSNA 함량 및 품질특성을 조사한 결과는 다음과 같다. 1. 개화기 순지르기가 발뢰기와 개화시 순지르기에 비해 전질소, 단백태 질소 등 모든 질소화합물과 총 TSNA 함량이 낮았다. 니코틴 함량은 순지르기 시기가 늦어질수록 유의적인 수준으로 감소하였고, 에텔 추출물은 증가하였다. 2. 건조엽의 색상 중 명도는 개화기 순지르기가 가장 높았고, 적색도와 황색도는 특별한 차이가 없었다. 수량은 순지르기 시기가 늦어질수록 감소하였으며, 외관품질은 순지르기 처리 간 큰 차이가 없었다. 3. 수확시기가 늦어질수록 질소화합물인 전질소, 단백태 질소, 질산태 질소, 암모니아태 질소가 감소하였고, 니코틴 함량은 증가하였다. 총 TSNA 함량도 수확시기가 늦어질수록 감소하였고, 에텔추출물은 증가하였다. 4. 전조엽의 색상 종 명도와 황색도는 수확시기가 늦어질수록 유의적인 수준으로 증가하였고, 적색도는 특별한 차이가 없었다. 수량은 수확시기가 늦어질수록 감소하였으나, 가격은 미숙엽 수확에 비해 적숙엽과 과숙엽 수확이 높았다. 5. 버어리종 잎담배 질소화합물 및 TSNA 함량 저감를 위해서는 개화기 순지르기 후 과숙엽 수확이 수량은 감소하나, 화학성분 개선 및 품질향상에 더 효과적인 것으로 조사되었다.

• 한국작물학회지
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• 제33권1호
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• pp.87-96
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• 1988

재배환경과 품질이 크게 상이한 한국의 만기작과 조기작, 그리이스 관행 재배에서의 생육환경, 잎담배의 화학성분 변화와 품질과의 관계를 분석한 결과, 1. 생육중 강우량은 한국의 만기작＆gt; 조기작＆gt; 그리이스작 순으로 적고, 일조시수는 강우량의 역순이었으며, 조기작은 만기작에 비해 이식후 30∼80일 기간중 강우량이 60% 적고, 일조시수는 20% 많았다. 2. 그리이스작은 한국 재배엽에 비하여 전질소, 니코틴, 석유에텔 추출물함량이 현저히 높았다. 그리이스작＆gt;조기작＆gt;만기작 순으로 휘발성 유기산, 정유성분 중성부의 함량이 높고 품질이 좋았으며, 조기작은 만기작보다 회분함량과 pH가 크게 낮았다. 3. 건조엽의 품질과 석유에텔추출물, 휘발성 유기산, 전질소함량은 정의 상관, 회분함량은 부의 상관을 보였다. 4. 품질평가를 위한 지수로는 총 휘발성 유기산(mg/100g), (equation omitted) 접합도가 높았다.

• 한국연초학회지
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• 제10권1호
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• pp.11-19
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• 1988

This study was conducted to relate among growth characteristics, quality, and chemical components for flue-cored tobacco. The results are summarized as follows : 1. Starch content in harvested green leaf was correlated negatively with leaf length, leaf width, leaf area, and leaf weight of harvested green leaf, respectively, while positively with total sugar content in cured leaf, and the ratio of leaf length to leaf width of harvested green leaf. 2. Organic matter and total nitrogen contents in the soil were correlated positively with nicotine content in cured leaf, respectively, and total nitrogen in the soil negatively with total sugar content in cured leaf. 3, Amount of fertilizer, application date of MH, priod of harvesting, and yield were correlated positively with nicotine content in cured leaf, respectively , while negatively with total sugar content. Application amount of MH was correlated positively with total sugar content, but negatively with nicotine content in cured leaf. Also amount of compost was correlated negatively with nicotine content in cured leaf. 4. The ratio of total sugar to nicotine (TS/N) per plant was correlated positively with price (Won/kg) and specific leaf area, but negatively with leaf length. leaf width, leaf area, harvested leaves, and leaf weight in cured leaves, respectively. Yield was correlated negatively with TS/N per plant. 5. TS/N of the best quality tobacco per plant was 12.0. Those of the best quality tobacco in each stalk position were 42.1 for first~third leaf, 28.4 for 4th~6th leaf , 23.7 for 7th~9th leaf, 7.7 for l0th~12th leaf , and 7.8 for over 13th leaf from bottom, respectively. 6, When TS/N was 12.0, optimum values of growth characteristics per plant were 100.5 $\pm$ 10.3g for leaf dry weight, 755.1$\pm$53.2cm for leaf length, 294.4$\pm$25.1cm for leaf width, 8, 892$\pm$111cm2 for leaf area, 16.0$\pm$0.6 leaves for harvested leaves, and 7.32$\pm$0.44mg/cm2 for specific leaf area, respectively. 7. When TS/N was 12.0, optimum values of chemical components per plant were 1.92$\pm$0.28% for nicotine content, and 20.4$\pm$ 1.4 % for total sugar content, and that of yield was 238.3$\pm$ 9.8kg/10a.

• 한국작물학회지
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• 제12권
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• pp.71-75
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• 1972

본 실험은 성숙촉진제 C.E.P.A(2-chloroethyl phosphonic acid)를 처리하여 잎담배 성숙촉진 여부와 나아가서 수량 및 품질에 미치는 영향을 검토코저 1970-1971년 양년에 걸쳐 소사시험장 및 산지적응시험을 시도한 바 그 결과를 요약하면 다음과 같다. 1. 농도가 높을수록 잎담배 성숙을 촉진시키는 정도가 현저하며 그 효과는 처리후 3-4일부터 나타났다. 2. 열 표면에만 처리해도 효과가 있었으며 성숙촉진 효과는 처리 부분에만 뚜렷하였다. 3. C.E.P.A 처리 효과는 성숙기에 가까운 하위엽에서 뚜렷했고 상위엽에서는 완만하였고 성숙 정도에 따라 차이가 현저하였다. 4. C.E.P.A는 농도가 높을수록 성숙충족효과는 크지마는 900ppm 이상이 되면 잎의 신전율이 떨어져서 약간이나마 감수가 되며 3,000ppm에서는 약 9%의 수량 감을 가져 오므로 적정농도는 900ppm으로 볼 수 있다. 5. C.E.P.A의 성숙충족 일수를 보면 100ppm에서 1일, 300ppm 3일, 450ppm 3일, 900ppm 4일, 3000ppm에서 약 7일간 단축시킬 수가 있었다. 6. 건조 경과를 보면 C.E.P.A처리구는 무처리에 비하여 시간으로 약 29%의 건조시간과 45%의 연료를 절감할 수 있는 가능성이 엿보인다. 7. 그러므로 잎담배 재배에 있어 C.E.P.A를 적정농도(900ppm)로 처리하면 수량의 감소를 가져 오지 않으면서 품질에서 13.5% 수납대금에서 12%의 소득을 증대시킬 수 있으며 부수적인 효과로서 3,000ppm에 약 7일, 건조시간에서 약24시간을 단축시킬 수 있다고 본다.