CAJ | 학술논문

以河南省郑州市的5年生三倍体白杨杂种无性系测定林为研究对象，对三倍体白杨杂种无性系木材基本密度和化学成分遗传变异、生长性状与木材基本密度以及化学成分间的相关性进行了研究。结果表明，无性系对木材基本密度、苯醇抽出物质量分数、木质素质量分数及综纤维素质量分数的影响均达到了极显著水平。三倍体白杨杂种无性系的平均木材基本密度、平均苯醇抽出物质量分数及平均木质素质量分数分别为325．0 kg/m3、2．13％、19．14％，比对照毛白杨无性系1319分别低10．1％、14．8％、21．7％；平均综纤维素质量分数为83．85％，比对照毛白杨无性系1319高1．3％。木材基本密度和苯醇抽出物、木质素、综纤维素质量分数的重复力分别为0．90、0．71、0．96、0．86。生长性状与木质素质量分数间呈显著的负相关，胸径、材积与综纤维素质量分数呈显著正相关。生长性状与木材基本密度间呈微弱正相关，表明对三倍体白杨杂种无性系进行生长量选择时，木材密度不会显著改变。
이하남성정주시적5년생삼배체백양잡충무성계측정림위연구대상，대삼배체백양잡충무성계목재기본밀도화화학성분유전변이、생장성상여목재기본밀도이급화학성분간적상관성진행료연구。결과표명，무성계대목재기본밀도、분순추출물질량분수、목질소질량분수급종섬유소질량분수적영향균체도료겁현저수평。삼배체백양잡충무성계적평균목재기본밀도、평균분순추출물질량분수급평균목질소질량분수분별위325．0 kg/m3、2．13％、19．14％，비대조모백양무성계1319분별저10．1％、14．8％、21．7％；평균종섬유소질량분수위83．85％，비대조모백양무성계1319고1．3％。목재기본밀도화분순추출물、목질소、종섬유소질량분수적중복력분별위0．90、0．71、0．96、0．86。생장성상여목질소질량분수간정현저적부상관，흉경、재적여종섬유소질량분수정현저정상관。생장성상여목재기본밀도간정미약정상관，표명대삼배체백양잡충무성계진행생장량선택시，목재밀도불회현저개변。
An experiment was conducted to determine the genetic variations in wood basic density, chemical components and phenotypic correlations between growth traits and wood basic density and chemical components of five-year-old triploid hy-brid clones of white poplar based on a clonal trial established in Zhengzhou of Henan Province.The clonal effects are high-ly significant for wood basic density, content of benzene-alcohol, content of lignin and content of holocellulose.The aver-age wood basic density is 325.0 kg/m3 , 2.13%for the average content of benzene-alcohol, and 19.14%for the average content of lignin, which decreases by 10.1%, 14.8%and 21.7%than that of diploid clone 1319 of Populus tomentoas , respectively.The average content of holocellulose is 83.85%, which is increased by 1.3%than that of diploid clone1 319 of P.tomentosa.The estimated repeatability of clonal means is 0.90 for wood basic density, 0.71 for content of benzene-alcohol, 0.96 for content of lignin, and 0.86 for content of holocellulose. Significant negative correlations are between growth traits and content of lignin.However, the diameter at breast height and the stem volume significantly positively cor-relate with the content of holocellulose.Weak positive correlations are between growth traits and wood basic density. Therefore, selecting triploid clones with fast growth will not lead to the decrease in wood basic density.