褐藻胶寡糖对大豆种子萌发及幼苗生理的影响

Effects of Alginate-derived Oligosaccharide on Seed Germination and Seedlings Physiological Characters of Glycine max

研究不同质量浓度(0、0.625g/L、1.25g/L、2.5g/L、5g/L)褐藻胶寡糖(ADO)浸种对大豆种子萌发及幼苗生理活性的影响。结果表明:0.625g/L的ADO能提高大豆种子发芽势及发芽过程中脂肪酶活性,同时也能提高幼苗叶绿体色素质量分数及生物量。整体来看ADO对可溶性蛋白质量分数的影响不显著。随着ADO质量浓度的升高,根系活力逐渐增强。说明,低质量浓度ADO浸种提高大豆种子发芽率、萌发过程中脂肪酶的活性及幼苗的生理活性,加快代谢过程,促进大豆生长,高质量浓度ADO抑制大豆的生长,但是根系活力会有代偿性增强,保证植物正常生长。

The effects of seed soaked in Alginate-derived oligosaccharide（ADO） solution with different mass concentration（0, 0. 625 g/L, 1.25 g/L, 2.5 g/L and 5 g/L） on the growth and some physiologi- cal indexes of Glycine max seed were studied. Results were as follows： 0. 625 g/L ADO enhanced soybean seed germination and sprouting lipase activity meanwhile the mass fraction of chlorophyll and seedling biomass were also improved. ADO＇s influence on soluble protein mass fraction as a whole was not significant. ADO improved the root activity of seedlings obviously. Also with ADO mass concentration, root activity gradually increased. The experiments showed that low mass concentrations of ADO improved the early growth of Glycine max, high mass concentrations of ADO inhibited the growth of soybean but actually improved the activity of root of Glycine max , which ensuring the normal growth of the plant.