清原杂种落叶松遗传变异分析

Genetic variation of hybrhybrid larch in Qingyuanid

以辽宁省清原县大孤家林场的14个杂种落叶松家系为研究对象,分析杂种落叶松的早期性状变异,结果表明:杂种落叶松树高、胸径、材积都存在变异,11年生杂种落叶松各家系树高、胸径和材积变异系数的平均值分别为19.72%、28.73%和60.70%;树高变异系数随树龄增大有减小趋势,5年生和11年生树高相关系数为0.82,呈极显著相关。

We taked14hybrid larch families(11-years-old)as the materials,measured their growth characteristics includingheight and DBH(diameter at breast height),estimated variation coefficient and correlation coefficient,and then selected excellent families.The results showed:there exists abundant variations,height,DBH and volume all had high variation coefficient,the variation coefficient of volume was the most(60.70%),while the variation coefficient of height was decreasing when the age increasing.There was highly significant correlation between5-years-old and11-years-old(correlation coefficient was0.82).