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对不同倍性苎麻酯酶同工酶及过氧化物酶同工酶进行了初步研究，发现酯酶同工酶酶带少，活性弱、倍性之间差异很小。而过氧化物酶同工酶酶带多、活性强、倍性之间差异大，其中Ｒｆ＝０．０２７和Ｒｆ＝０．０８２两条酶带为多倍体所特有，可作为其特征酶带。另外，还对不同倍性苎麻的光合作用特性也进行了初步研究，发现不同倍性之间净光合强度、蒸腾强度、气孔阻力、叶温均有很大差异。多倍体光合强度大、单倍体最低、二倍体居中；蒸腾强度以二倍体最大、三倍体次之，四倍体、单倍体较小；气孔阻力以单倍体最大，多倍体较小，二倍体居中。
Different times of ramie esterase isozymes and peroxidase isozymes conducted a preliminary study found that esterase isozymes with less, weak activity, ploidy little difference between. However, there are more peroxidase isozyme bands, strong activity and ploidy differences. The two bands of Rf = 0.027 and Rf = 0.082, which are characteristic of polyploidy, can be used as characteristic enzymes band. In addition, the photosynthetic characteristics of different ploidy ramie were also studied. The results showed that the net photosynthetic intensity, transpiration intensity, stomatal resistance and leaf temperature differed greatly among different ploidy. Polyploid photosynthetic intensity, haploid lowest, middle diploid; transpiration intensity in diploid, triploid, tetraploid, haploid smaller; stomatal resistance to haploid largest, and more Ploid smaller, diploid intermediate.