Abstract
Considerable opportunity exists to modify the nursery environment to bring the seedling and the site closer together. Development of quantified regeneration difficulty indices based on the physical and climatic conditions associated with specific sites can provide a guide towards specifying the physiological and morphological attributes required for site adaptation, i.e., the development of target seedlings. The timing and amount of irrigation, as it influences the internal water relations of seedlings, is a particularly valuable tool in seedling architecture. Characterization of seedling water relations via the pressure-volume technique indicated that seedlings which were moderately water-stressed in late summer (rewatered when pre-dawn water potential reached -750 kPa) showed an apparent 405 kPa osmotic adjustment, a capacity for greater turgor maintenance over a range of water potentials, and significantly greater root regeneration in February as compared to unstressed seedlings. Several challenges are presented as a result of this study.
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Hennessey, T.C., Dougherty, P.M. (1984). Characterization of the Internal Water Relations of Loblolly Pine Seedlings in Response to Nursery Cultural Treatments: Implications for Reforestation Success. In: Duryea, M.L., Brown, G.N. (eds) Seedling physiology and reforestation success. Forestry Sciences, vol 14. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6137-1_10
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DOI: https://doi.org/10.1007/978-94-009-6137-1_10
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