植物生长调节剂对绿色巴夫藻生长的影响

The Influence of Plant Growth Regulators on the Growth of Pavlova viridis

研究了二种植物生长调节剂对绿色巴夫藻 ( Pavlova viridis)的生长、叶绿素含量和干重的影响。结果表明 ,在试验浓度范围内 ,2 ,4— D对绿色巴夫藻生长的影响在培养早期比后期明显 ,最适浓度为 0 .1 m g/L ;6-BA质量浓度≥ 1 mg/L时对绿色巴夫藻有致死作用 ,质量浓度为 0 .1～ 0 .8mg/L时 ,对绿色巴夫藻的生长有促进作用 ,促进生长的最适质量浓度为 0 .5mg/L。在一定浓度范围内 ,二种植物生长调节剂都可促进绿色巴夫藻的生长 ,提高叶绿素含量 ,增加试验藻的干重。

The effect of two plant growth regulaors on the growth, chlorophyll content and dry weight of Pavlova viridis was studied. The results showed that 2,4 D had promotive effects on the growth of pavlova viridis, especially in the early stage of culture, and the optimum mass concentration was 0.1 mg/L. 6 BA had lethal effect on pavlova viridis, and the lowest lethal mass concentration was 1.0 mg/ L. Otherwise 6 BA had promotive effect when its mass concentration was 0.1～0.8 mg/L, and the most suitable mass concentration of promoion effect was 0.5 mg/L. In a word, the growth of Pavlova viridids would be notable under the effect of the plant growth regulators of the concentration and chlorophyll content would raise obviously, and dry weight of one litre Pavlova viridis would increase when the cell density raised.