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利用31个优良无性系,研究桉树组培瓶苗主要繁殖及生长性状的遗传变异。这些性状在无性系间表现出极其显著的差别(P<0.0001);遗传组分或遗传力均属较高水平(h2>0.54),25d丛生芽数目的遗传力最高达0.93;丰富的无性系或遗传变异也展示在这些性状的表现值范围上。丛生芽的繁殖数目与高生长呈现极其密切的正相关(P<0.0001);根苗开始萌根时间与主根长度的关系为极显著(P=0.005),萌根时间越早,主根越长;丛生芽数目与主根长度的关系为一般性显著(P=0.039)。
31 elite clones were used to study the genetic variation of main reproductive and growth traits in tissue culture seedlings of Eucalyptus. These traits showed extremely significant differences among clones (P <0.0001); the genetic components or heritabilities were high (h2> 0.54); the heritability of clustered shoots reached the maximum of 0.93 on the 25th day; and the abundant clones Or genetic variation is also demonstrated over the range of performance values for these traits. (P <0.0001). The relationship between root sprouting time and main root length was very significant (P = 0.005), the earlier the root sprouting, the longer the main root; The relationship between the number of shoots and the length of the main root is generally significant (P = 0.039).