擎天树种子不同溶剂浸提液对白菜种子萌发及幼苗生长的影响

以具有胎萌现象的擎天树种子为材料,采用不同溶剂进行提取,通过生物测定法研究了擎天树种子不同溶剂浸提液对白菜种子萌发与幼苗生长的影响.结果表明,擎天树种子不同溶剂浸提液对白菜种子的发芽与生长均有抑制效应,且随浸提液浓度增大抑制作用增强.不同溶剂的种子浸提液对白菜种子萌发与幼苗生长的抑制活性存在差异,其中以乙醚浸提液的抑制活性最强,其他溶剂的浸提液对白菜种子萌发和幼苗生长也表现出了不同程度地抑制作用,抑制强弱依次为乙醚、水、乙醇、甲醇、丙酮.

Effect of Different Solvent Extraction of Parashorea chinensis Seeds on Seed Germination and Early Seedling Growth of Brassica campestris ssp. chinensis

Parashorea chinensis Wang Hsie seeds with vivipary were extracted by different solvent extractions,and the effects of different solvent extraction of P.chinensis seeds on seed germination and early seedling growth of Brassica campestris L.ssp.chinensis(L.) Mak.were studied through biological assay method.The results indicated that there was obvious inhibitory effect of all crude extracts on the germination and growth of B.campestris ssp.chinensis,and the inhibitory effect became stronger as the concentration of extraction solution increased.The inhibitory activity on germination and growth of B.campestris ssp.chinensis differed with different solvent.The crude extracts from ether showed the strongest inhibitory activity;while other extracts also had inhibitory effect.The inhibitory activity of different solvent extractions ranked from strong to week as ether,water,alcohol,carbinol,acetone.