两种发菜培养体系的筛选

采用两种培养液，其中加入不同激素，并设置一定的浓度梯度，观察其对发菜生长及含氮量的影响。初步结果表明；培养液2中的发菜生长情况优于培养液1中的，不仅发菜增长率高，解体程度也低；两种培养液中的均是加入5mg/L NAA的发菜生长最好，培养液2的平均增长度达19.8%，培养液1的达10.7%；培养液2中的发菜的含氮量高于培养液1中的，但含氮量与激素种类和浓度无相关性。

The Selection of Two Culture Systems in Nostoc flagelliforme

The effects on Nostoc flagelliforme growth rate and nitrogen content of two different culture systems and different kinds and concentrations of phytohormones were studied. The results showed that medium 2 could promote the growth better than medium 1.The growth rate of the Nostoc flagelliforme in the medium 2 was higher and the disintegration was lower than in the medium 1. Both of the two medium could promote the growth most when supplemented with 5mg/L NAA,and the average growth rate of Nostoc flagelliforme in the medium 2 was 19.8%,in the medium 1 was 10.7%. The nitrogen content in the medium 2 was higher than the medium 1, but there was no revelence between the nitrogen content and phytohormone kind.