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Variation of Polyphenols in Flue‐Cured Tobacco Cultivars Attributed to Location, Stalk Position, and Year 1
Author(s) -
Williamson R. E.,
Gwynn G. R.
Publication year - 1982
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1982.0011183x002200010033x
Subject(s) - stalk , cultivar , curing of tobacco , polyphenol , nicotiana tabacum , biology , horticulture , botany , antioxidant , biochemistry , gene
Levels of polyphenols in tobacco ( Nicotiana tabacum L.) leaf are associated with certain constituents in the smoke. This study was designed to determine the variability in levels of polyphenols in several cultivars of flue‐cured tobacco as influenced by stalk position, location, and year. The levels of polyphenols were compared in cured leaves from bottom, middle, and top stalk positions of 13 cultivars grown at four locations for 2 years. There were differences among cultivars for polyphenol level. ‘NC 2326’ had the highest level with 4.25% and ‘Speight G‐28’ had the lowest with 3.58%. Highly significant differences in levels of polyphenols associated with stalk position were measured (3.15, 4.11 and 4.42% for the bottom, middle, and top position, respectively). There were significant interactions of locations by the seasons experienced in the 2 years. Interactions involving cultivars were not significant in most cases, and where they were, it involved higher order interactions. This was also true for stalk positions. The presence of cultivar differences and the consistency of these differences would encourage breeding efforts but testing over locations and years would be advisable.