Effects of Six Plant Growth Regulators on the Growth of Spirulina platensis A_9
The influence of six plant growth regulators with three different concentrations on the growth of S.platensis A_9 was studied. The results showed that 0.5 mg·L~(-1) GA,1.0 mg·L~(-1) 6-BA,5 mg·L~(-1) NAA and 0.5 mg·L~(-1) 2,4-D had significant effects on the growth of strain A_9, especially at the beginning six days of cultivation. In the course of intersection experiment,combination of NAA with 6-BA was more suitable for the growth of strain A_9.Determination of intrinsic hormone offered theoretic basis for improving effect of hormones on the growth of strain A_9.