3种促生菌对豌豆和大豆种子萌发及幼根生长的影响

Effects of three growth-promoting bacteria on seed germination and root growth of pea and soybean

以链霉菌Streptomyces sp.FXP04、侧孢短芽孢杆菌Brevibacillus laterosporus Y、皮尔瑞俄类芽孢杆菌Paenibacillus peoriae NT 3种促生菌为研究对象,调查它们对豌豆和大豆种子萌发及幼根生长的影响.结果表明,3种促生菌在不同浓度下(OD600=0.5,OD600=1)对豌豆和大豆种子的萌发都没有显著促进作用.菌株Brevibacillus laterosporus Y和菌株Paenibacillus peoriae NT能够促进豌豆和大豆幼根伸长,菌株Streptomyces sp.FXP04可以促进大豆幼根伸长,对豌豆幼根伸长无显著促进作用.3种促生菌都能够促进豌豆和大豆侧根的数量增多.

Streptomyces sp.FXP04,Brevibacillus laterosporus Y and Paenibacillus peoriae NT were used to investigate their effects on seed germination and root growth of pea and soybean.The results showed that the three growth-promoting bacteria(OD600=0.5 and OD600=1)had no significant effect on the germination of pea and soybean seeds at different concentrations.Brevibacillus laterosporus Y and Paenibacillus peoriae NT could promote the elongation of young roots of pea and soybean,but Streptomyces sp.FXP04 could promote the elongation of young roots of soybean,but had no significant effect on the elongation of young roots of pea.All of the three growth-promoting bacteria could increase the number of lateral roots of pea and soybean.