These seedlots can be denoted by their relative growth rates . 这些种子组可根据其相对生长速度进行编号表示。
2.
Only later were the tissue isolates reduced to their minimum size to produce the maximum relative growth rates . 只有到后来，离体组织减少到它们的最小体积而产生最大的相对生长速率。
3.
Root elongation in hydroponic solutions showed that the transgenic plant have increased al tolerance . the transgenic plants have higher relative root elongation under 20umol / l al stress than untransformed control 根相对生长量实验证明转基因植株具有一定的铝耐受性，在20 mol l的al ~ ( 3 + )浓度下比对照具有更高的根相对生长量。
