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http://dx.doi.org/10.7732/kjpr.2011.24.4.438

Germination Behaviors and Seed Longevities of Three Ulmus Species in Korea  

Song, Jeong-Ho (Division of Forest Genetic Resources, Korea Forestry Research Institute)
Lim, Hyo-In (Division of Forest Genetic Resources, Korea Forestry Research Institute)
Jang, Kyung-Hwan (Division of Forest Genetic Resources, Korea Forestry Research Institute)
Publication Information
Korean Journal of Plant Resources / v.24, no.4, 2011 , pp. 438-444 More about this Journal
Abstract
This study was conducted to investigate temperature effect on seed germination behaviors and seed viability changes by drying periods of three Ulmus species (Ulmus davidiana var. japonica (Rehder) Nakai, U. pumila L., and U. parvifolia Jacq.) distributed in Korea. Statistical analysis showed that temperature had a significant effect on mean germination time in three Ulmus species, but its effect on germination percentage was only shown in U. parvifolia (p<0.01). U. davidiana var. japonica and U. pumila germinated relatively consistent in all temperature conditions, especially the latter showed high germination behaviors in low temperatures (10-15$^{\circ}C$). U. parvifolia germinated well in high temperature (25$^{\circ}C$), while this species rarely germinated in low temperature conditions (10-20$^{\circ}C$). The results confirm that seeds of U. pumila and U. parvifolia are orthodox seeds which can be stored under 4-8% moisture condition, and U. davidiana var. japonica seed is recalcitrant seed which is difficult to store for a long time. In conclusion, these differences of the germination behaviors for three Ulmus species seem to be adaptive regimes of their natural habitats, respectively.
Keywords
Ulmus davidiana; U. pumila; U. parvifolia; Germination; Longevity;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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