• Journal of the Korean Society of Tobacco Science
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• v.17 no.1
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• pp.57-61
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• 1995

Black shank(Phytophthora parasitira roar. nicotianae) resistant burley tobacco (Nicotiana tabacum L.) germplasms, KB 104 and KB 106, were developed by Korea Ginseng & Tobacco Research Institute. KB 104 was developed from the single cross of Burley 21$\times$Newton 77, using a modified pedigree method. KB 104 was highly resistant to black shank, and its agronomic characteristics and chemical contents were comparable to those of Burley 21, and value per 10a was slightly higher than Burley 21, KB 106 is a maternally derived doubled haploid made by N. africana method from the single cross of Burley 21$\times$ Va 509. KB 106 was also highly resistant to black shank, had two more harvestable leaves per plant and flowered three days later than Burley 21 did. Total alkaloid and nicotine contents of KB 106 were significantly lower than those of Burley 21. But its nornicotine content was higher than Burley 21 5. Key wads : Burley tobacco germplasm, Black shank resistance.

• Journal of the Korean Society of Tobacco Science
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• v.6 no.2
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• pp.97-116
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• 1984

Volatile aroma components were extracted from Korean burley tobacco (grades: heavy-1, heavy-5, thin-1, and thin-5) by using a vacuum steam distillation apparatus. Individual flavor components were identified by combination of Carbowax20M (used silica capillary gas chromatography and mass spectrometry. Out of the identified components, neophytadiene (43.6ppm), megastigna-4,6,8-trien-3-one (4isomers) (3.32-23.5 1ppm), ethanol (1.8ppm), and ethylacetate (4.7ppm) were contained less in burley heavy grade-5 tobacco than in heavy grade 1 ; neophytadiene (43.7pp), megastigma-4,6,8-triers-3-one (4 isomers) (1.09-3.03ppm), ethylacetate (7.9ppm), and ethanol (8.4ppm), were less in burley thin grade 5 tobacco than in thin grade 1 : nicotin (75.79ppm), and solanone (8.5ppm) were less in burley heavy grade 1 tobacco than in burley heavy grade 5: solanone (5.76ppm), geranylacetone (9.02ppm), phenylacetaldehyde (1.12ppm), $\beta$-phenylethylalcohol (1.93ppm), and dihydroactinidiolide (1.39ppm) were less in burley thin grade 1 than in burley thin grade 5. On the other hand, iso-valeraldehyde, n-valeraldehyde, dimethylpyrazine, and propionic acid were not identified in Korean burley tobacco, but in American burley tobacco.

• Journal of the Korean Society of Tobacco Science
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• v.14 no.2
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• pp.97-103
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• 1992

KB 101 is a bacterial wilt(Pseudomonas solanaceamm E.F. Smith) and black shank (Phytophthora nicotianae Breda de Haan Var. nicotianae Waterhouse) resistant cultivar of burley tobacco (Nicotiana tabacum L.) KB 101 was developed by the Korea Ginseng&Tobacco Research Institute, and released in 1987. KB 101 was developed from a single plant selection in the F2 generation derived from the double cross, [(Burley 21X Burley 37) X (Burley 64X Ky 16)]. Burley 37 and Burley 64 were the source of resistance to bacterial wilt and black shank. Yield trials were conducted in the Fs through F6 generations at the four Exp. Stn. of Korea Ginseng &Tobacco Research Institute as JB 7705-1. On-farm yield trials were conducted in the F7 through F9 generations at the 45 locations of burley tobacco growing area from 1984 to 1986 as KB 101. KB 101 has an erect growth habit similar to that of Burley 21: plant size is larger and has more leaves than those of Burley 21. It is late maturing cultivar that flowers approximately 3 days later than Burley 21. The physical characteristics and chemical composition of KB 101 were similar to those of Burley 21.

• Journal of the Korean Society of Tobacco Science
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• v.22 no.1
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• pp.84-90
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• 2000

This study was conducted to determine the acid and phenol compounds in smoke total particulate matter(TPM) by the different tobacco variety, and grade of tobacco leaves. Sixteen kinds of tobacco leaves which were flue-curd, burley, orient, reconstituted tobacco, expanded stem, and expanded cut tobacco, were selected for this study. After collecting a TPM by using smoking machine, the concentration of TPM components was analyzed by GC. Acid components of TPM of mainstream smoke were different from the variety and grade. The order of the highest concentration of acid compounds in TPM was flue-cured > orient> burley> expanded cut tobacco> reconstituted tobacco> expanded stem. Though lactic acid and glycolic acid concentrations in flue-cured tobacco were twice higher than those in burley tobacco, the contents of 2-furoic acid and 3,4-dihydroxy butanoic acid in burley tobacco were higher than those in flue-cured tobacco. The content of phenolic compounds in the high grade and thick leaves was higher than that in other tobacco leaves. Phenol and catechol compounds in burley CD3W-2 revealed the least value in concentration among the samples tested. Pyrocatechol and hydroquinone concentrations in flue-cured tobacco were 2-3 times higher than those in burley and orient tobacco.

• Journal of the Korean Society of Tobacco Science
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• v.2 no.1
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• pp.28-37
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• 1980

This experiment was carried out to evaluate the utilization of F, hybrids using cytoplasmic male sterility in Burley tobacco. Four cytoplasmic male sterile lines and their male-fertile counterparts and 21 Fi hybrids and their parents were evaluated for their agronomic performance in replicated field trials. Some F1 hybrids were comparable to Burley 21, the only Burley cultivar in Korea. Among 21 F1 hybrids, MS L8$\times$Burley 49 and three other hybrids showed 2-11% and 1-5% higher yield and price per kg than Burley 21, respectively.

• Journal of the Korean Society of Tobacco Science
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• v.19 no.2
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• pp.83-91
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• 1997

The vein-necrosis strain or potato virus Y (PVY-Vff) and black shank (Phytophlhora parasitica roar. nicotianae) causes severe damage on burley tobacco(Wicotiana tabacum L.) in Korea, A new burley tobacco resistance to PVY and black shank, KB 110, was developed by Korea Ginseng and Tobacco Research Institute. It was developed from the cross of Burley 21 with TC 591 in 1990, and was backrossed to Burley 21 in the following season. TC 591 has resistance to PVY and moderate resistance to race 0 of black shank, but it is susceptible to tobacco mosaic vim (TMV). KB 110 was evaluated for its resistance to PVY, TMV and black shank in the greenhouse and at fields for preliminary and performance trials. KB 110 which has secreting glandular trichomes was resistant to PVY-VN, TW and black shank. It had an erect growth habit and two more leaves per plant than that of Burley 21, and matures two to three days later. It yielded approximately 3 percent more cured leaf than the standard cultivar Burley 21, but other plant characteristics were very similar to those of Burley 21. It had acceptable standards for chemical and physical characteristics of lured leaf on regional farm test in 1995-1997. KB 110 produced average yields of good quality tobaccos and was appeared to be resistant to PVY inwhere occurrence of the virus are severe chronic at burley growing area.

• Journal of the Korean Society of Tobacco Science
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• v.16 no.1
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• pp.57-64
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• 1994

Burley tobacco (Nicotiana tabacum L.) KB 108 was developed from a single cross between KB 104 and TC 591 which was developed from a cross between Burley 49 and Tobacco Introduction 1406. It was tested for its resistance to black shank, potato virus Y(PVY), TMV and agronomic characteristics under field conditions. KB 108 has resistance to tobacco mosaic virus(TMV) and necrotic strain of potato virus Y(PVY-VN) with secreting glandular trichomes. It has also moderate resistance to black shank caused by phytophthora parasitica val. Nicotianae. KB 108 has an up-right plant growth habit similar to Burley 21. It flowers about 1-2 days later than Burley 21. The leaf width and length of KB 108 are approximately 3 cm wider and longer than those of Burley 21. The yield of KB 108 was higher 4%, nearly equal in value per kg compared to Burley 21.

• Journal of the Korean Society of Tobacco Science
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• v.26 no.1
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• pp.50-56
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• 2004

The quality of burley leaf tobacco was affected by various toasting conditions. In this study, we determined main factor to influence the quality of burley tobacco on toasting and established proper toasting condition to improve the quality of toasted tobacco. Our results indicated that the main factor to influence the quality of burley tobacco was the amount of treatment and 3rd drying zone temperature. We also found that the proper toasting conditions to improve the quality of toasted tobacco and reduce the smoking irritation were moisture content (34 %), amount of treatment (1,520kg/hr), 1st drying zone temperature (135$^{\circ}C$), 2nd zone drying temperature(145$^{\circ}C$) and 3rd zone drying temperature (147$^{\circ}C$).

• Journal of the Korean Society of Tobacco Science
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• v.24 no.2
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• pp.130-132
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• 2002

The new burley tobacco variety, KB 301, was developed by the cross combination ’(Ky 17 x TI 1068)F$_4$ x TC 613’. The modified pedigree breeding method was used in the selection procedures. The agronomic traits and chemical constituents of KB 301 were very similar to those of Burley 21. But KB 301 had significantly higher content of total DVT than Burley 21. KB 301 was also resistant to black shank, TMV and PVY.

• Journal of the Korean Society of Tobacco Science
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• v.23 no.2
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• pp.95-102
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• 2001

This study was conducted to obtain the basic information for breeding of burley(N. tabacum cv. burley) and sun-cured tobacco(N. tabacum cv. sun-cured) variety. Two burley(Burley 21, KB 108), and T.I. 1068 and three sun-cured varieties(Yeonbyeon 3, Jaheungyeon and Jaraehong) were diallel crossed and 15 combinations of F$_1$generations were made in 1998, respectively. Six parental varieties, 15 F$_1$s were grown under the complete randomized block design with 3 replications at Chonju Experiment Station, Korea Ginseng & Tobacco Research Institute in 2000. The data of 12 quantitative characters were measured for degree of heterosis. The results obtained are as follows. Heterosis of F$_1$generation was positive in weight per leaf, plant height, stem diameter, yield, leaf length and total alkaloid content. Cross combinations between either Burley 21 or KB 108 and sun-cured varieties showed comparatively high heterosis in each characters.