Comparative analysis of 1st-year growth in six deciduous tree species

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Abstract
Classical growth analysis was used to examine the basis of major variation in seedling growth characteristics among and within 6 deciduous tree species in nursery beds. A combination of high investment in leaf area and substantial net assimilation rate accounted for the high relative growth rate of Liriodendron tulipifera L. and Prunus serotina Ehrh.; these species also produced the largest seedlings in the test. Final weight of 4 Quercus spp. was closely associated with initial leaf area established at germination; Q. rubra L. and Q. prinus L. had the largest seedlings despite having net assimilation rates lower than Q. alba L. and Q. ilicifolia Wangenh., the smallest seedlings in the test. Within species, relative growth rate was significantly correlated with both net assimilation rate and relative growth rate of leaf area. Leaf area partition coefficient was positively correlated with relative growth rate in L. tulipifera, P. serotina and Q. rubra, but not in Q. alba, Q. prinus and Q. ilicifolia.

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