Details for: PI 664300, Nicotiana tabacum L., B2


Summary Data
Taxonomy:
Nicotiana tabacum L.
Top Name:
B2
Origin:
Developed – Connecticut, United States
Received by NPGS:
20 Dec 2011
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Annual
Life Cycle:
Annual
Availability
This accession is not available. Contact site for status.
 
There are no images for this accession.

Core Passport Data
Taxonomy:
Nicotiana tabacum L.
Top Name:
B2
Origin:
Developed – Connecticut, United States
Received by NPGS:
20 Dec 2011
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Annual
Life Cycle:
Annual
Source History
Developed

Connecticut, United States

Developer(s):
Accession Names and Identifiers
B2
Type: Developer identifier

Narrative
B2 is a male-sterile hybrid with resistance to four of the most common and destructive pathogens of tobacco in Connecticut, including Fusarium wilt, Tobacco mosaic virus (TMV), the tobacco cyst nematode(TCN) and blue mold. B2 was released by The Connecticut Agricultural Experiment Station in 2011. Initial crosses for cyst nematode resistance were made in 1987 between two flue-cured tobaccos, VA-81 and cultivar PD4 and three broadleaf inbreds resistant to Fusarium wilt and TMV. Selected F2 plants were backcrossed twice to CT broadleaf, and then inbred and selected over 12 generations using a bulk system of modified single seed descent in which only the top 2% of plants (20 plants of 1,000 grown) were selected for the next generation. Selection for TMV and TCN resistance was conducted in greenhouse screens. Lines were field selected for reduced sensitivity to weather fleck caused by ozone. An F12 selection was backcrossed again to the broadleaf cultivar `Scantic? inbred using pedigree selection over 10 generations with field and greenhouse selection. Progeny testing was performed to select F8 plants homozygous for G. t. tabacum resistance and the dominant hypersensitive gene for resistance to tobacco mosaic virus derived from Nicotiana glutinosa. A superior male-fertile inbred (MF-2) resulting from 27 generations of selection for broadleaf agronomic characteristics with 8 cycles of selection each for Fusarium wilt, TMV and TCN resistance was identified and crossed with a male-sterile CT broadleaf line with homozygous resistance to TMV and resistant to Fusarium wilt (MS-1) to produce the F1 male-sterile hybrid B2. Yield and quality characteristics of B2 were determined to be equal or superior to the current standard `C9?.
Nicotiana tabacum L.
Genus:
Nicotiana
Section:
Nicotiana
Family:
Solanaceae
Subfamily:
Nicotianoideae
Nomen number:

25309
Place of publication:

Sp. pl. 1:180. 1753
Comment:
valid publication verified from original literature
Verified:
04/23/2009 by ARS Systematic Botanists.
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Autonym(s)
Nicotiana tabacum L. var. tabacum

Heterotypic Synonym(s)
Nicotiana chinensis Fisch. ex Lehm.
Nicotiana tabacum L. var. macrophylla (Lehm.) Schrank

Invalid Designation(s)
Nicotiana ×calyciflora Caille ex Comes
Common names
LanguageNameAlternate namenoteseqCitation
Englishtobacco  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
Frenchtabac  2Vossen, H. A. M. van der & M. Wessel, eds. 2000. Stimulants. In: Faridah Hanum, I. & L. J. G. van der Maesen, eds., Plant Resources of South-East Asia (PROSEA) 16:93-94.
Frenchtabac commun  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
GermanTabak  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Germanvirginischer Tabak  2Erhardt, W. et al. 2008. Der große Zander: Enzyklopädie der Pflanzennamen
Italiantabacco  2International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Spanishtabaco  2Soukup, J. 1970. Vocabulario de los nombres vulgares de la flora peruana.
Swedishvirginiatobak  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chineseyan cao  2Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
Transcribed Koreandambae  2Mun-Chan, B. et al. 1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:111.
Annotations
Other Links
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Pathogens
Vouchers
Citations
  • LaMondia, J. 2013. Registration of ‘B2’ Connecticut Broadleaf Cigar-Wrapper Tobacco Resistant to Fusarium Wilt, Tobacco Mosaic Virus, Cyst Nematodes, and Blue Mold. J. Pl. Registr. 7(1):058. DOI: 10.3198/jpr2011.12.0656crc. Number of accessions cited: 1
Pedigree
Description:
CT broadleaf crossed to two flue-cured tobaccos, VA-81 and cultivar PD4. Selected F2 plants were backcrossed then inbred and selected over 12 generations of modified single seed descent. An F12 selection was backcrossed to the broadleaf cultivar Scantic then inbred and selected using pedigree selection over 10 generations. The male-fertile inbred (MF-2) resulting from 27 generations of selection with 8 selection cycles each for Fusarium wilt, TMV and TCN resistance was crossed to a male-sterile CT broadleaf line MS-1 to produce the F1 male-sterile hybrid B2.
Intellectual Property Rights
Journal of Plant Registration. CV-124, TOBACCO. Issued: 01 Jan 2013.
  • LaMondia, J. 2013. Registration of ‘B2’ Connecticut Broadleaf Cigar-Wrapper Tobacco Resistant to Fusarium Wilt, Tobacco Mosaic Virus, Cyst Nematodes, and Blue Mold. J. Pl. Registr. 7(1):058. DOI: 10.3198/jpr2011.12.0656crc.