Seed spacing and seedling biomass: Effect on root growth potential of loblolly pine (Pinus taeda) |
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Authors: | David B South Harry S Larsen James N Boyer Hans M Williams |
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Institution: | (1) School of Forestry and Alabama Agricultural Experiment Station, Auburn University, 36849-5418 Auburn, AL, USA;(2) Present address: Corps of Engineers, Custom House, 19109-2991 Philadelphia, PA, USA;(3) School of Forestry, Louisiana State University, 70803 Baton Rouge, LA, USA |
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Abstract: | Results from three studies conducted in bare-root nurseries indicate a positive linear relationship between seed spacing and root growth potential of Pinus taeda L. seedlings. However, root growth potential was also correlated with several morphological variables, including seedling weight, root collar diameter, root weight, root volume, foliage weight and stem weight. Because seedlings grown at wider spacings were larger in diameter and biomass, covariate analyses (using either root collar diameter or foliage ovendry weight) were also conducted. These analyses indicate that differences in root growth potential between seed spacings can be accounted for by differences in seedling size. |
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Keywords: | nursery seedbed density covariance analysis seedling morphology and physiology |
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