Isogenic or near isogenic lines of flue-cured tobacco were produced containing the N. glutinosa type of mosaic resistance from Burley 21. The mosaic resistance factor was transferred into six cultivars of flue-cured tobacco by the backcross method. From each backcross family two resistant selections and one sister susceptible selection were compared with their recurrent parent for agronomic and chemical characteristics. The mosaic resistance factor was associated with reduced yield and off-quality charac teristics. These results parallel those of a previous study in which resistance from Va. 45 was used, so that it may be inherently difficult to disassociate these adverse characteristics from TMV resistance in flue-cured tobacco. Breeding techniques that might offset these unfavorable associations should be explored, or a new segmental substitution attempted.

Crop ScienceVolume 17, Issue 5 cropsci1977.0011183X001700050045x p. 825-825 Registration of Crop Cultivars Registration of NC 13 Tobacco1 (Reg. No. 87) D. F. Matzinger, D. F. MatzingerSearch for more papers by this authorE. A. Wernsman, E. A. WernsmanSearch for more papers by this authorT. J. Mann, T. J. Mann Professor of genetics, professor of crop science, and professor of genetics, North Carolina State Univ., Raleigh, N.C. 27607, respectively.Search for more papers by this author D. F. Matzinger, D. F. MatzingerSearch for more papers by this authorE. A. Wernsman, E. A. WernsmanSearch for more papers by this authorT. J. Mann, T. J. Mann Professor of genetics, professor of crop science, and professor of genetics, North Carolina State Univ., Raleigh, N.C. 27607, respectively.Search for more papers by this author First published: 01 September 1977 https://doi.org/10.2135/cropsci1977.0011183X001700050045x 1 Registered by the Crop Sci. Soc. Am. Contribution from the North Carolina Agric. Exp. Stn. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL No abstract is available for this article. Volume17, Issue5September–October 1977Pages 825-825 RelatedInformation

The suitability of progenitor species germplasm as a source of genetic variation for the improvement of quantitatively inherited genetic traits in a cultivated allotetraploid species was investigated. Tobacco, Nicotiana tabacum L. cv. SC 58 was doubled with colchicine to the octoploid state and crossed with the diploid progenitor species N. sylvestris Speg. and Comes. The partially fertile pentaploid hybrid was selfed, or backcrossed one generation to SC 58, to increase fertility. Two cycles of a recurrent selection scheme using SC 58 as a tester parent were then followed to concentrate desirable germplasm from N. sylvestris in the species‐derived synthetic populations.The two synthetic populations (Syn I and Syn II), 58, S1 families, and testcrosses to SC 58 of plants in Syn I which were used to produce Syn II were evaluated in three environments for 11 agronomic and chemical constituents. Significant differences were detected among genetic entries for all characters measured except percent nornicotine in cured leaf, indicating that germplasm from the diploid species, N. sylvestris, had been introgressed into the N. sylvestris genome of tobacco. The potential value of this genetic variation is demonstrated by the fact that Syn I and Syn II yielded 7.7 and 12.9%, respectively, more cured leaf than SC 58. Thus, the breeding technique may be useful in broadening the genetic base for the improve. merit of quantitatively inherited characters in this cultivated species.

Crop ScienceVolume 16, Issue 5 cropsci1976.0011183X001600050052x p. 742-742 Registration of Crop Cultivar Registration of NC 12 Tobacco1 (Reg. No. 81) D. F. Matzinger, D. F. MatzingerSearch for more papers by this authorE. A. Wernsman, E. A. WernsmanSearch for more papers by this authorT. J. Mann, T. J. Mann Professor of genetics, professor of crop science, and professor of genetics, North Carolina State Univ., Raleigh, NC 27607, respectively.Search for more papers by this author D. F. Matzinger, D. F. MatzingerSearch for more papers by this authorE. A. Wernsman, E. A. WernsmanSearch for more papers by this authorT. J. Mann, T. J. Mann Professor of genetics, professor of crop science, and professor of genetics, North Carolina State Univ., Raleigh, NC 27607, respectively.Search for more papers by this author First published: 01 September 1976 https://doi.org/10.2135/cropsci1976.0011183X001600050052x 1 Registered by the Crop Sci. Soc. Am. Contribution from the North Carolina Agric. Exp. Stn. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume16, Issue5September–October 1976Pages 742-742 RelatedInformation

Journal Article Onset, Prevention, and Restoration of Male-Sterile Flower Anomalies in Tobacco: Interaction of the Nicotiana repanda plasmon and N.tabacum genome Get access L. G. BURK, L. G. BURK research geneticist Crops Research Division, Agricultural Research Service, U. S. Department of AgricultureOxford, North Carolina 27545 Search for other works by this author on: Oxford Academic PubMed Google Scholar T. J. MANN T. J. MANN Professor Department of Genetics, North Carolina State UniversityRaleigh, North Carolina Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Heredity, Volume 61, Issue 4, July 1970, Pages 143–146, https://doi.org/10.1093/oxfordjournals.jhered.a108062 Published: 01 July 1970

Crop ScienceVolume 9, Issue 5 cropsci1969.0011183X000900050065x p. 681-682 Registration of Germplasm Registration of MRS-1, MRS-2, MRS-3, and MRS-4 Tobacco Germplasm1 (Reg. Nos. GP 1 To 4, inclusive) James F. Chaplin, James F. Chaplin Leader Tobacco Breeding and Disease Investigations, Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Oxford, N. C. 27565 (formerly Pee Dee Experiment Station, Florence, S. C.).Search for more papers by this authorT. J. Mann, T. J. Mann Professors of Genetics, North Carolina State University, Raleigh, N.C.Search for more papers by this authorD. F. Matzinger, D. F. Matzinger Professors of Genetics, North Carolina State University, Raleigh, N.C.Search for more papers by this authorJ. L. Apple, J. L. Apple Professor of Plant Pathology, North Carolina State University, Raleigh, N. C.Search for more papers by this author James F. Chaplin, James F. Chaplin Leader Tobacco Breeding and Disease Investigations, Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Oxford, N. C. 27565 (formerly Pee Dee Experiment Station, Florence, S. C.).Search for more papers by this authorT. J. Mann, T. J. Mann Professors of Genetics, North Carolina State University, Raleigh, N.C.Search for more papers by this authorD. F. Matzinger, D. F. Matzinger Professors of Genetics, North Carolina State University, Raleigh, N.C.Search for more papers by this authorJ. L. Apple, J. L. Apple Professor of Plant Pathology, North Carolina State University, Raleigh, N. C.Search for more papers by this author First published: 01 September 1969 https://doi.org/10.2135/cropsci1969.0011183X000900050065x 1 Registered by the Crops Science Society of America. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume9, Issue5September–October 1969Pages 681-682 RelatedInformation

Journal Article Inheritance of a Female Sterility in Tobacco Get access HSIUNG WAN, HSIUNG WAN Former graduate student and Professor of Crop Science and Genetics, North Carolina State University, Raleigh, North Carolina, respectively. The senior author is now Senior Specialist, Joint Commission on Rural Reconstruction, Taipei, Taiwan. Contribution from the Department of Crop Science, North Carolina State University, Raleigh, N. C. Approved by the Director of Research of the North Carolina Agricultural Experiment Station as paper No. 2283 of the Journal Series Search for other works by this author on: Oxford Academic PubMed Google Scholar T. J. MANN T. J. MANN Former graduate student and Professor of Crop Science and Genetics, North Carolina State University, Raleigh, North Carolina, respectively. The senior author is now Senior Specialist, Joint Commission on Rural Reconstruction, Taipei, Taiwan. Contribution from the Department of Crop Science, North Carolina State University, Raleigh, N. C. Approved by the Director of Research of the North Carolina Agricultural Experiment Station as paper No. 2283 of the Journal Series Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Heredity, Volume 58, Issue 2, March 1967, Pages 85–87, https://doi.org/10.1093/oxfordjournals.jhered.a107555 Published: 01 March 1967

In the F2 generation of a cross between two flue‐cured tobacco varieties, additive genetic variance was the predominant genetic variance for percent total alkaloids, yield, flower, leaves, and suckers. For value per acre and plant height, there was evidence of nonadditivity, which could not be resolved between dominance and epistasis. Most additive genetic correlations among yield, height, flower, and leaves were positive and significant. Number of suckers was negatively correlated with all traits except value. Yield and percent total alkaloids were negatively correlated. The gain predicted from one cycle of selection by intercrossing the top 12.5% of the full‐sib families for total alkaloids was 21% above the mean of the full‐sib families. An expected correlated response was a decrease of 87 pounds yield per acre.

A variant designated "cherry-red" is frequently observed in common flue-cured tobacco varieties.This variant has a dappled red coloration of the cured leaf.Cherry-red and red-free selections have been obtained from Nicotiana tabacum, L. cv.401.Analysis of these selections for alkaloids showed that the cherry-red selection had a much higher nornicotine content than the red-free selection.Conversion of nicotine to nornicotine was studied

Crop ScienceVolume 5, Issue 1 cropsci1965.0011183X000500010012x p. 30-33 Article Genetic Variation and Covariation in a Nicotiana tabacum L. Synthetic Two Generations After Synthesis1 Paul D. Legg, Paul D. LeggSearch for more papers by this authorD. F. Matzinger, D. F. MatzingerSearch for more papers by this authorT. J. Mann, T. J. Mann Formerly NDEA Fellow in Genetics (now Assistant Geneticist, University of California, Riverside), and Professors of Genetics, North Carolina State of the University of North Carolina at Raleigh, respectively.Search for more papers by this author Paul D. Legg, Paul D. LeggSearch for more papers by this authorD. F. Matzinger, D. F. MatzingerSearch for more papers by this authorT. J. Mann, T. J. Mann Formerly NDEA Fellow in Genetics (now Assistant Geneticist, University of California, Riverside), and Professors of Genetics, North Carolina State of the University of North Carolina at Raleigh, respectively.Search for more papers by this author First published: 01 January 1965 https://doi.org/10.2135/cropsci1965.0011183X000500010012xCitations: 12 1 Contribution from the Department of Genetics, North Carolina Agr. Exp. Sta., Raleigh, N. C., as paper No. 1853 of the Journal Series. This investigation was supported in part by Public Health Service Research Grant GM11546 from the Division of General Medical Sciences. The support for computing was provided by the National Institutes of Health Grant FR-00011. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume5, Issue1January–February 1965Pages 30-33 RelatedInformation

Crop ScienceVolume 4, Issue 4 cropsci1964.0011183X000400040003x p. 349-353 Article Inheritance of the Conversion of Nicotine to Nornicotine in Varieties of Nicotiana tabacum L. and Related Amphiploids1 T. J. Mann, T. J. MannSearch for more papers by this authorJ. A. Weybrew, J. A. WeybrewSearch for more papers by this authorD. F. Matzinger, D. F. MatzingerSearch for more papers by this authorJ. L. Hall, J. L. Hall Professor of Crop Science, Professor of Genetics, and Assistant Professor of Crop Science, respectively.Search for more papers by this author T. J. Mann, T. J. MannSearch for more papers by this authorJ. A. Weybrew, J. A. WeybrewSearch for more papers by this authorD. F. Matzinger, D. F. MatzingerSearch for more papers by this authorJ. L. Hall, J. L. Hall Professor of Crop Science, Professor of Genetics, and Assistant Professor of Crop Science, respectively.Search for more papers by this author First published: 01 July 1964 https://doi.org/10.2135/cropsci1964.0011183X000400040003xCitations: 31 1 Contribution from the Departments of Crop Science and Genetics, North Carolina Agricultural Experiment Station, Raleigh, North Carolina, No. 1723 of the Journal Series. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume4, Issue4July–August 1964Pages 349-353 RelatedInformation

Crop ScienceVolume 4, Issue 4 cropsci1964.0011183X000400040016x p. 387-388 Article Segregation in New Allopolyploids of Nicotiana. III. Nicotine-Converter Genes in Allopolyploids from N. tomentosiformis, N. sylvestris and N. tabacum1 D. U. Gerstel, D. U. GerstelSearch for more papers by this authorT. J. Mann, T. J. Mann Professors of Crop Science.Search for more papers by this author D. U. Gerstel, D. U. GerstelSearch for more papers by this authorT. J. Mann, T. J. Mann Professors of Crop Science.Search for more papers by this author First published: 01 July 1964 https://doi.org/10.2135/cropsci1964.0011183X000400040016xCitations: 2 1 Journal Series Paper No. 1724 of the North Carolina Agricultural Experiment Station, Raleigh, North Carolina. Aided by Grant G-23430 of the National Science Foundation. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article.Citing Literature Volume4, Issue4July–August 1964Pages 387-388 RelatedInformation

Crop ScienceVolume 2, Issue 5 cropsci1962.0011183X000200050013x p. 407-410 Article The Use of Cytoplasmic Male Sterility in Flue-Cured Tobacco Hybrids1 T. J. Mann, T. J. MannSearch for more papers by this authorG. L. Jones, G. L. JonesSearch for more papers by this authorD. F. Matzinger, D. F. Matzinger Professors of Field Crops and Associate Professor of Genetics, respectively.Search for more papers by this author T. J. Mann, T. J. MannSearch for more papers by this authorG. L. Jones, G. L. JonesSearch for more papers by this authorD. F. Matzinger, D. F. Matzinger Professors of Field Crops and Associate Professor of Genetics, respectively.Search for more papers by this author First published: 01 September 1962 https://doi.org/10.2135/cropsci1962.0011183X000200050013xCitations: 8 1 Contribution from the Department of Field Crops and Genetics, North Carolina State College, Raleigh. Published with the approval of the Director of Research as Paper No. 1409 of the Journal Series of the North Carolina Agr. Exp. Sta. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume2, Issue5September–October 1962Pages 407-410 RelatedInformation