CAJ | 학술논문

以30个杉木杂交亲本的RAPD分析为基础，对亲本间分子遗传变异与子代树高、胸径和材积及其变异系数和亲本间各性状的特殊配合力的相关关系进行了研究。结果表明，亲本间遗传距离只与胸径特殊配合力和材积特殊配合力在0.10显著性水平上呈负相关，而与其它因子相关不显著。分别对亲本聚类分析的组内和不同组间的亲本间遗传距离与各因子进行相关分析，组内亲本间遗传距离与各因子的相关基本不显著；在中等平均遗传距离上，组间亲本间遗传距离与子代树高、胸径和/或材积性状达0.05显著水平的相关，但与各性状的变异系数和亲本间特殊配合力相关不显著。共检测到23个标记位点显著影响材积性状( α0.10)。根据亲本携带的材积显著性位点对各家系进行赋值，家系的显著性位点值与胸径和材积两性状及其变异系数达0.01显著水平的相关，但与树高性状和其它各因子相关不显著。结论认为，杉木亲本的分子遗传变异与子代生长的相关关系较为复杂；亲本的分子遗传变异对亲本选配有一定的参考价值；材积显著性位点对分子标记辅助的亲本选配和子代表现预测有较大的应用潜力
이30개삼목잡교친본적RAPD분석위기출 ，대친본간분자유전변이여자대수고、흉경화 재적급기변이계수화친본간각성상적특수배합력적상관관계진행료연구。결과표명，친본간 유전거리지여흉경특수배합력화재적특수배합력재0.10현저성수평상정부상관，이여기타인 자상관불현저。분별대친본취류분석적조내화불동조간적친본간유전거리여각인자진행상 관분석，조내친본간유전거리여각인자적상관기본불현저；재중등평균유전거리상，조간친 본간유전거리여자대수고、흉경화/혹재적성상체0.05현저수평적상관，단여각성상적 변이계수 화친본간특수배합력상관불현저。공검측도23개표기위점현저영향재적성상( α0.10)。근 거친본휴대적재적현저성위점대각가계진행부치，가계적현저성위점치여흉경화재적량성상 급기변이계수체0.01현저수평적상관，단여수고성상화기타각인자상관불현저。결론인위， 삼목친본적분자유전변이여자대생장적상관관계교위복잡；친본적분자유전변이대친본선배 유일정적삼고개치；재적현저성위점대분자표기보조적친본선배화자대표현예측유교대적응 용잠력
RAPD-based genetic distance between 30 parental trees of Chinese fir (Cunninghamia lanceolata) and its correlation with hybrid performance in height (H), diameter breast-high (DBH) and volume (V) as well as their variation coefficients (CV) and specific combining ability values (SCA) were calculated. Parental genetic distance was ne gatively correlated at 0. 10 of significance level with SCA in DBH and V, but not significantly correlated with other factors. With the 6 groups of parents divided by cluster analysis, i ntra-group genetic distance was not significantly correlated with hybrid perfor mance, and medium inter-group genetic distance was significantly correlated wit h H, DBH, and/or V at 0.05 level . Hybrid value based on the number of marker loc i related with volume at 0.10 significance level was significantly correlated wi th DBH and V as well as their [ WTBX CV at 0.01 level. The conclusions came to that RAP D-based parental genetic distance would be valuably referable for parental grou ping and volume-significant loci be relatively great potential in parental grou ping and hybrid performance prediction in Chinese fir breeding practices.