CAJ | 학술논문

以青海省西宁市湟水林场9年生10个杨树新杂种无性系为材料，对生长和材性等9个性状进行了方差分析和遗传参数估算。研究结果表明，树高、胸径、材积、Pilodyn值、南向外侧基本密度、整株木材基本密度、纤维长度、纤维宽度、纤维长宽比在无性系间存在极显著或显著差异。无性系8-25的材积最高，为0．213 m3；8-24的最低，为8-25的14．5％。各性状的重复力在0．711～0．977，其中树高重复力最高，为0．977，纤维长度的最低，为0．711，胸径和材积的均高于0．900。 Pilodyn测定结果与木材密度的相关分析结果表明无性系Pilodyn平均值、南向外侧木材基本密度平均值和整株木材基本密度平均值间存在极显著的相关关系，相关系数为-0．846～0．981。胸径与树高、材积、南向外侧木材基本密度单株间存在极显著和显著的相关关系，相关系数分别为0．852、0．962和0．462。通过对10个无性系生长和材性之间的相关分析，发现杨树新杂种无性系胸径、材积、纤维长与南向外侧整株木材密度显著相关；参试无性系与对照北京杨和青杨比较，杂种无性系都超过青杨对照，有两个超过了北京杨，整株木材密度与对照相近，差异不显著。利用多性状主成分分析，选出8-6、8-16、8-25综合性状表现优良的无性系，其中8-25生长最好，胸径分别是对照青杨、北京杨的1．14、1．61倍，单株材积分别是对照青杨、北京杨的1．80、5．76倍。
이청해성서저시황수림장9년생10개양수신잡충무성계위재료，대생장화재성등9개성상진행료방차분석화유전삼수고산。연구결과표명，수고、흉경、재적、Pilodyn치、남향외측기본밀도、정주목재기본밀도、섬유장도、섬유관도、섬유장관비재무성계간존재겁현저혹현저차이。무성계8-25적재적최고，위0．213 m3；8-24적최저，위8-25적14．5％。각성상적중복력재0．711～0．977，기중수고중복력최고，위0．977，섬유장도적최저，위0．711，흉경화재적적균고우0．900。 Pilodyn측정결과여목재밀도적상관분석결과표명무성계Pilodyn평균치、남향외측목재기본밀도평균치화정주목재기본밀도평균치간존재겁현저적상관관계，상관계수위-0．846～0．981。흉경여수고、재적、남향외측목재기본밀도단주간존재겁현저화현저적상관관계，상관계수분별위0．852、0．962화0．462。통과대10개무성계생장화재성지간적상관분석，발현양수신잡충무성계흉경、재적、섬유장여남향외측정주목재밀도현저상관；삼시무성계여대조북경양화청양비교，잡충무성계도초과청양대조，유량개초과료북경양，정주목재밀도여대조상근，차이불현저。이용다성상주성분분석，선출8-6、8-16、8-25종합성상표현우량적무성계，기중8-25생장최호，흉경분별시대조청양、북경양적1．14、1．61배，단주재적분별시대조청양、북경양적1．80、5．76배。
With ten nine-year clones of Poplar Hybrid Clones from Huangshui Forest Farm in Qinghai Province , the experiment was conducted to analyze the variance of growth and wood properties and estimate their genetic parameter .There are signif-icant differences among clones in height, diameter at breast height, volume, value of Pilodyn, wood outside basicdensity in the south, whole wood density, fiber length and fiber width.Volume of clone 8-25 was the highest (0.213 m3 ), whereas that of clone 8-24 was the lowest accounting for 14.5%of clone 8-25.The repeatability of each characters is in 0.711-0.977, the repeatability of height was the highest (0.977), that of fiber length is the lowest (0.711) and both of DBH and volume are higher than 0.900.By correlation analysis between Pilodyn value and wood density, there is very sig-nificant relationship between woodoutside basic density in the south and whole wood density in the south (-0.846-0.981). DBH has significant relationship with volume, fiber length and whole wood outside basic density in the south, with the corre-lation coefficient of 0.852, 0.962 and 0.462, respectively.There are significant relationships among clones in DBH, vol-ume, fiber length and whole wood outside basic density in the south.All hybrid poplar clones are higher thanP opuul s cathayana, two hybrid poplar clones are higher than Populus×beijingensis, but its whole wood density approximates to that of controls, and there is no significant difference between the former and the control in whole wood density.By principal com-ponent analysis, three clones, 8-6, 8-16 and 8-25, have good performance in competitive characters, and 8-25 is the best.DBH of clone 8-25 is 1.14 and 1.80 times than those of controls (Populus×beijingensis and Populus cathayana), and individual volume is 1.61 and 5.76 times than those of controls (Populus×beijingensis and Populus cathayana) .