永同 地域 잣나무 風媒 次代 15年生의 樹高 및 直徑生長의 變異와 遺傳力 및 改良效果 = Variation, Heritability and Genetic Gain for Height and Diameter Growth of 15-Year-Old Open-Pollinated Progenies of Korean White Pine in Youngdong Site

다국어 초록 (Multilingual Abstract)

Twenty Korean white pine(Pinus koraiensis) families were tested in Youngdong site. Family, Block, and Family×Block interaction were significant sources of variance for height and diameter growth of progenies. The average height and diameter were 315.79m, 63.3mm, respectively. Heritability estimates of height growth were higher than those of diameter growth. Estimates of individual and family heritability were 0.30, 0.59 in height growth, and 0.23, 0.56 in diameter one, respectively. Correlatioship between height and diameter growth was significantly high(r=0.799).
When the top 10% of individuals or families were selected, the expected genetic gains for tree height and diameter growth were higher in the combined selection and the mass selection than in another selection methods.