title: Cottonwood growth rate and fine root condensed tannin concentration.
abstract: We examined the relationship between trunk diameter and diameter relative growth rate (RGR) and fine root condensed tannin concentration in 12 genotypes of eastern cottonwood (Populus deltoides Bartr. ex Marsh.) planted in three locations across the north central United States. Across genotypes, trunk diameter, diameter RGR and root condensed tannin concentration were negatively correlated at one location (Wisconsin), but showed no significant correlation at the other locations (Iowa and Michigan). The factors responsible for this difference among sites remain unidentified, but may be related to soil fertility.
authors.affiliation: Forestry Department, Michigan State University, East Lansing, MI 48824, USA. kkosola@facstaff.wisc.edu
authors.forename: Kevin R
authors.initials: KR
authors.lastname: Kosola
authors.forename: Donald I
authors.initials: DI
authors.lastname: Dickmann
authors.forename: Richard B
authors.initials: RB
authors.lastname: Hall
authors.forename: Beth Ann A
authors.initials: BA
authors.lastname: Workmaster
mesh_terms: D009584:Nitrogen / Q000378:metabolism; D018517:Plant Roots / Q000737:chemistry*; D018547:Plant Stems / Q000254:growth & development; D032107:Populus / Q000737:chemistry / Q000254:growth & development*; D044945:Proanthocyanidins / Q000032:analysis*; D012987:Soil; D014197:Trees / Q000737:chemistry / Q000254:growth & development*
chemical_list: D044945:Proanthocyanidins; D012987:Soil; D009584:Nitrogen