六种固氮蓝藻提取液对玉米的促长作用和提取液成分比较

本文用六种固氮蓝藻的提取液处理玉米种子，同时对其提取液氨基酸组成和碳水化合物与维生素Ｂ１２的含量进行了分析。结果表明固氮鱼腥藻ＨＢ６８６（ＡｎａｂａｅｎａａｚｏｔｉｃａＨＢ６８６）、球孢鱼腥藻ＨＢ１０１７（Ａ．ｓｐｈａｅｒｉｃａＨＢ１０１７）、多变鱼腥藻ＨＢ１０５８（Ａ．ｖａｒｉａｂｉｌｉｓＨＢ１０５８）和小单歧藻ＨＢＴＴ（ＴｏｌｙｐｏｔｈｒｉｘｔｅｎｕｉｓＨＢＴＴ）的提取液中氨基酸、碳水化合物和维生素Ｂ１２的含量高于鱼腥藻ＳＰ．ＨＢ１０４２（Ａｎａｂａｅｎａｓｐ．ＨＢ１０４２）和繁育管链藻ＨＢ３８（ＡｕｌｏｓｉｒａｆｅｒｔｉｌｉｓｓｉｍａＨＢ３８）。同时，促进玉米种子萌发和幼苗生长的效果前四种藻较好，后两种则较差。

GROWTH PROMOTING EFFECT OF EXTRACTS FROM SIX STRAINS OF NITROGEN-FIXING BLUE-GREEN ALGAE ON MAIZE WITH AN ANALYSIS ON THE COMPOSITION OF EXTRACTS

Extracts obtained from 6 strains of nitrogen fixing blue green algae were used to examine their effects on maize seed and their amino acids, carbohydrates and vitamin B12 contents were analysed. All the extracts have positive affect on the germination and seedling growth of maize. Extracts from Anabaena azotica HB 686, A. sphaerica HB 1017, A. variabilis HB 1058 and Tolypothrix tenuis HB TT showed better growth Promoting effect than from Anabaena sp. HB 1042 and Aulosira fertilissima HB 38. Correspondingly, contents of amino acids, carbohydrates and vitamin B12 in extracts from the former 4 species are ralatively higher than from the later 2 species.