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http://dx.doi.org/10.14578/jkfs.2011.100.2.13

Variation of Samara, Seed, Germination and Growth Characteristics of Ulmus davidiana var. japonica Nakai Populations  

Song, Jeong-Ho (Division of Forest Genetic Resources, Korea Forestry Research Institute)
Jang, Kyung-Hwan (Division of Forest Genetic Resources, Korea Forestry Research Institute)
Lim, Hyo-In (Division of Forest Genetic Resources, Korea Forestry Research Institute)
Park, Wan-Geun (College of Forest and Environmental Sciences, Kangwon National University)
Bae, Kwan-Ho (School of Ecology & Environment system, Kyungpook National University)
Publication Information
Journal of Korean Society of Forest Science / v.100, no.2, 2011 , pp. 226-231 More about this Journal
Abstract
Ulmus davidiana var. japonica is a deciduous tree species used for traditional medicine. This study was conducted to investigate the variation of samara, seed, germination and growth characteristics among populations and among individuals within five natural populations of U. davidiana var. japonica distributed in Korea. The ten characteristics of samara and seed, the three germination behaviors as well as the two growth traits were studied in samaras collected from total 32 trees. Statistical analysis of all characteristics showed that there were significant differences among populations as well as among individuals within populations. In this study, the mean characteristics of this species were 13.0 mm in samara length, 9.7 mm in samara width, 1.37 in samara index, 0.015 g in samara weight, 3.07 mm in samara stalk length, 3.85 seed length, 2.66 mm in seed width, 1.46 in seed index, 1.29 mm seed thickness, 0.0062 g in seed weigh, 34.8% in germination percentage, 8.6 days in mean germination time, 3.5 ea./day in gemination rate, 37.7 cm in height and 4.90 mm in root collar diameter. Especially, coefficients of variations in samara weight, germination percentage, germination rate, height and root collar diameter were relatively high (${\geq}30.0%$) compared to other traits. There was no significant relationship between population association and geographical distribution. The results of principal component analysis for 15 characteristics showed that primary four principal components (PC's) explained 100% of the total variation. The first PC accounted for 41.8% of the variability which correlated with morphological traits, the second PC accounted for 32.9% of the variability which correlated with germination behaviors and the third PC accounted for 16.3% of the variability which correlated with growth traits.
Keywords
Ulmus davidiana var. japonica; samara; germination; growth; variation;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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