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Viability Determination of Pinus rigida Seeds Using Artificially Accelerated Aging  

Han, Sim-Hee (Department of Forest Genetic Resources, Korea Forest Research Institute)
Koo, Yeong-Bon (Department of Forest Genetic Resources, Korea Forest Research Institute)
Kim, Chan-Soo (Warm-temperate Forest Research Center Korea Forest Research Institute)
Oh, Chang-Young (Department of Forest Genetic Resources, Korea Forest Research Institute)
Song, Jeong-Ho (Department of Forest Genetic Resources, Korea Forest Research Institute)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.8, no.1, 2006 , pp. 10-14 More about this Journal
Abstract
We tested the seed viability of Pinus rigida using accelerated aging to discover optimum times and temperatures far artificially accelerated aging. Seeds were artificially aged at different temperatures and during different tines. The seed viability was affected by the accelerated aging and by temperature with a decline in germination and seed vigor. The aging index of P. rigida seed was 0.31 at $35^{\circ}C$ and seed viability was nearly lost after aging treatment at $40^{\circ}C$ for 15 days. The optimum temperature of P. rigida far the aging test was decided to be approximately $37^{\circ}C$ on the basis of the aging index. Inorganic materials and conductivity of leaching solution from aging seeds increased with the increase of aging period. The accelerated aging test was considered to be a suitable method to evaluate the seed viability of tree species. Because seed characters are much different among tree species, however, more studies need to be done to discover the optimum conditions for aging by tree species.
Keywords
Seed germination; Aging index; Inorganic material; Conductivity;
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