二甲苯对萝卜幼苗生长及生理特性的影响

Effect of Xylene on the Growth and Physiological Characteristics of Radish Seedlings

为探究二甲苯对植物生长发育的影响,以萝卜(Raphanus sativus L. )为材料,分析二甲苯处理萌发的幼苗后产生的各种生物学效应。在培养皿上播种萝卜种子,用不同浓度的二甲苯溶液浇灌幼苗,测定幼苗的生长量及细胞内的多种内含物含量的变化。结果表明:不同浓度的二甲苯处理后,幼苗的生长量有下降趋势;蛋白质含量随二甲苯溶液浓度的增加先升高后降低;核酸含量先降低后升高;二甲苯抑制叶绿素的合成,在二甲苯浓度为0.3%时抑制作用最明显;可溶性糖含量则随二甲苯溶液浓度的升高先增加后降低。

In order to explore the effects of xylene on the growth and development of plants.The radish(Raphanussativus L.)was used as the material to analyze the biological effects of xylene treatment.Tap-water was poured to the seed,and then the seedlings were cultured in xylene solution with different concentrations.The growth and the contents of various contents in the cells of the radish seedlings were measured.The result showed that under the influence of different concentrations of xylene,the growth of seedlings had a downward trend,the protein content increased first,then decreased.Nucleic acid content decreased first and then increased,xylene inhabited the synthesis of chlorophyll,and the effect was most obvious when xylene concentration was 0.3%.Soluble sugar content decreased firstly with increasing concentrations of xylene and then decreased.