AC Cheng flue-cured tobacco

1997 ◽  
Vol 77 (1) ◽  
pp. 155-156 ◽  
Author(s):  
J. E. Brandle ◽  
J. C. D. Ankersmit ◽  
W. D. Rogers
Keyword(s):  
Nicotiana Tabacum ◽  
Key Words ◽  
Pest Management ◽  
Somatic Hybrid ◽  
Somatic Hybrids ◽  
Research Centre ◽  
Management Research ◽  
Leaf Quality ◽  
Nicotiana Rustica ◽  
Breeding Lines

AC Cheng is a flue-cured tobacco (Nicotiana tabacum) cultivar bred at the Pest Management Research Centre of Agriculture and Agri-Food Canada. It is a cultivar with high leaf quality and resulted from crosses between flue-cured cultivars and breeding lines, and Nicotiana rustica (+) Nicotiana tabacum somatic hybrids (somatic 9/77CD15//2*Delgold) (Douglas et al. 1981). AC Cheng is adapted to the tobacco growing areas of Ontario. Key words: Nicotiana tabacum, somatic hybrid

AC Maridel flue-cured tobacco

1997 ◽  
Vol 77 (1) ◽  
pp. 159-160
Author(s):  
J. E. Brandle ◽  
W. Arsenault ◽  
W. D. Rogers ◽  
J. C. D. Ankersmit
Keyword(s):  
Nicotiana Tabacum ◽  
Root Rot ◽  
Prince Edward Island ◽  
High Yield ◽  
Research Centre ◽  
Management Research ◽  
Leaf Quality ◽  
Black Root Rot ◽  
Breeding Lines ◽  
Chalara Elegans

AC Maridel is a flue-cured tobacco (Nicotiana tabacum) cultivar bred collaboratively by the Pest Management Research Centre and the Charlottetown Research Centre of Agriculture and Agri-Food Canada. It is a cultivar with high yield, improved leaf quality and is resistant to black root rot (Chalara elegans). It resulted from crosses between two breeding lines originally selected at Delhi (80M11/80K2G). AC Maridel is adapted to the tobacco growing areas of Prince Edward Island. Key words: Nicotiana tabacum, black root rot resistance

The chemical composition of somatic hybrids between Nicotiana tabacum and N. debneyi

1992 ◽  
Vol 72 (1) ◽  
pp. 209-215 ◽  
Author(s):  
William A. Court ◽  
Robert Pocs ◽  
John G. Hendel ◽  
J. E. Brandle
Keyword(s):  
Chemical Composition ◽  
Nicotiana Tabacum ◽  
Parental Species ◽  
Somatic Hybrids ◽  
Chemical Constituents ◽  
Leaf Quality ◽  
Phenolic Constituents ◽  
Surface Waxes ◽  
Nicotiana Debneyi ◽  
The Individual

The chemical composition of somatic hybrids resulting from six separate fusion events involving Nicotiana tabacum and Nicotiana debneyi was examined in relation to that of the parental species. Nonvolatile organic acids, fatty acids, phenolic constituents, plastid pigments, tobacco alkaloids, solanesol, and individual cembranes and paraffins of the surface waxes were determined in green tissue from field grown plants. The chemical composition of the individual somatic hybrids was often intermediate between the two species; however, there were instances where the concentration of individual constituents was similar to one of the species, or where concentrations were in excess of either parental species. Given the importance of leaf quality to the value of a tobacco crop, careful attention to chemical constituents during backcrossing and introgression is advocated.Key words: Somatic hybrids, Nicotiana tabacum, Nicotiana debneyi, tobacco chemistry

Delfield flue-cured tobacco

1991 ◽  
Vol 71 (2) ◽  
pp. 575-577 ◽  
Author(s):  
R. S. Pandeya ◽  
J. E. Brandle ◽  
J. C. D. Ankersmit ◽  
V. D. Rogers ◽  
W. A. Keller
Keyword(s):  
Nicotiana Tabacum ◽  
Key Words ◽  
Somatic Hybrid ◽  
Somatic Hybridization ◽  
Nicotiana Tabacum L ◽  
Cultivar Description

Delfield, a flue-cured tobacco (Nicotiana tabacum L). cultivar, has higher yield than Delhi 76, but similar grade price and therefore provides higher returns to growers. Delfield originated from a somatic hybrid between N. tabacum and N. rustica. Key words: Nicotiana tabacum L., tobacco, somatic hybridization, cultivar description

scholarly journals Tetraploid somatic hybrids of potato (Solanum tuberosum L.) obtained from diploid breeding lines

2007 ◽  
Vol 12 (2) ◽  
Author(s):  
Jarosław Przetakiewicz ◽  
Anna Nadolska-Orczyk ◽  
Dominik Kuć ◽  
Wacław Orczyk
Keyword(s):  
Solanum Tuberosum ◽  
Somatic Hybrid ◽  
Morphological Traits ◽  
Somatic Hybrids ◽  
Solanum Tuberosum L ◽  
Dna Amplification ◽  
Breeding Lines ◽  
Random Primers

AbstractIntraspecific somatic hybrids between 16 different diploid breeding lines of Solanum tuberosum L. were produced by PEG-induced fusion. Manually selected heterokaryons were cultured in a Millicells-CM using a post-fusion protoplast mixture. Plants were regenerated from calli derived from heterokaryons obtained from 10 out of 38 combinations of diploid lines. Of the tested putative somatic hybrids, 14.2% were diploid, 72.8% were tetraploid and 13% pentaploid. The DNA amplification pattern obtained with RAPD or semi-random primers confirmed that 6 fusion combinations were hybrids. In most cases, the morphological traits were intermediate to those of the diploid fusion partners. About 23.0% of the tested somatic hybrids showed variation in their morphology. Of the tested somatic hybrids, 78.0% flowered and 86.0% tuberized. The cytoplasm of 9 diploid lines and 6 somatic hybrid combinations was analysed. Two of the diploid lines had W/S chloroplasts and α or ε mitochondria; the remainder contained T chloroplasts and β mitochondria. All the analysed somatic hybrids carried T chloroplasts and β mitochondria.

scholarly journals Expression of nuclear and cytoplasmic genes in the progeny of a somatic hybrid between male sterile Nicotiana tabacum and N. glutinosa.

1982 ◽  
Vol 57 (4) ◽  
pp. 343-347 ◽  
Author(s):  
Hirofumi UCHIMIYA ◽  
Takashi AKIYAMA ◽  
Toshifumi OHGAWARA ◽  
Hiroshi HARADA
Keyword(s):  
Nicotiana Tabacum ◽  
Somatic Hybrid ◽  
Male Sterile

AC Nordic orchardgrass (Dactylis glomerata L.)

1993 ◽  
Vol 73 (3) ◽  
pp. 845-846 ◽  
Author(s):  
A. R. McElroy
Keyword(s):  
Key Words ◽  
Stem Rust ◽  
Dactylis Glomerata ◽  
Research Centre ◽  
Mass Selection ◽  
Puccinia Graminis ◽  
Plant Research ◽  
Selection For ◽  
Dactylis Glomerata L

AC Nordic is a late-maturing orchardgrass (Dactylis glomerata L.) cultivar. It was developed by mass selection for yield, persistence and resistance to stem rust (Puccinia graminis) at the Plant Research Centre, Agriculture Canada, Ottawa. Its yield was similar to that of cv. Sumas in a total of 33 station years in Quebec. Yield in second and subsequent production years was 101.6% of cv. Sumas over 19 station years. Key words: Dactylis glomerata L., orchardgrass

scholarly journals Origin of the Black Shank Resistance Gene, Ph, in Tobacco Cultivar Coker 371-Gold

Plant Disease ◽  
2002 ◽  
Vol 86 (10) ◽  
pp. 1080-1084 ◽  
Author(s):  
E. S. Johnson ◽  
M. F. Wolff ◽  
E. A. Wernsman ◽  
W. R. Atchley ◽  
H. D. Shew
Keyword(s):  
Nicotiana Tabacum ◽  
Rapd Markers ◽  
Random Amplified Polymorphic Dna ◽  
Dominant Gene ◽  
Nicotiana Plumbaginifolia ◽  
Black Shank ◽  
Breeding Lines ◽  
Tobacco Cultivar ◽  
Qualitative Resistance ◽  
Interspecific Transfer

Flue-cured tobacco (Nicotiana tabacum) cultivar Coker 371-Gold (C 371-G) possesses a dominant gene, Ph, that confers high resistance to black shank disease, caused by race 0 of the soil-borne pathogen Phytophthora parasitica var. nicotianae. The origin of this gene is unknown. Breeding lines homozygous for the Ph gene were hybridized with NC 1071 and L8, flue-cured and burley genotypes known to possess qualitative resistance genes from Nicotiana plumbaginifolia and N. longiflora, respectively. The F1 hybrids were out-crossed to susceptible testers and the progenies evaluated in field black shank nurseries and in greenhouse disease tests with P. parasitica var. nicotianae race 0. Results showed that Ph was allelic to Php from N. plumbaginifolia in NC 1071. Testcross populations of hybrids between burley lines homozygous for Ph and L8, possessing Phl from N. longiflora, showed that Ph and Phl integrated into the same tobacco chromosome during interspecific transfer. Nevertheless, the two loci were estimated to be 3 cM apart. Random amplified polymorphic DNA (RAPD) analyses of the testcross progenies confirmed that recombination between the two loci was occurring. Forty-eight RAPD markers linked to Ph in doubled haploid lines were used in cluster analyses with multiple accessions of N. longiflora and N. plumbaginifolia, breeding lines L8, NC 1071, and DH92-2770-40, and cultivars K 326, Hicks, and C 371-G. A cladogram or region tree confirmed the data obtained from field and greenhouse trials, that Ph, transferred from C 371-G to DH92-2770-40, and Php in NC 1071 were allelic and originated from N. plumbaginifolia.

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