种苗大小对当归成药期早期抽薹和生理变化的影响

通过研究不同大小种苗移栽后到抽薹前后当归茎叶和根部蛋白质、游离氨基酸、可溶性糖含量变化动态,探索种苗大小对当归成药期抽薹的影响和抽薹前生理变化规律,为当归早抽薹提供一定的营养控制理论依据。结果表明,种苗根直径越大,其茎叶和根中可溶性蛋白质含量越高,抽薹前茎叶蛋白质含量呈“增-降-增”的变化趋势,根部呈“W”形变化;茎叶游离氨基酸含量呈“W”形变化,含量随根直径增大而减小,抽薹植株出现之前根部含量随直径增大而增大,之后波动下降,有抽薹发生后则表现相反趋势;可溶性糖含量随根直径的增大而增加,根直径较小种苗移栽后茎叶中可溶性糖含量一直呈上升趋势,而根直径较大种苗则在抽薹发生后迅速下降。在抽薹发生前的生长过程中,根直径较小种苗移栽后地上部分蛋白质、可溶性糖含量低,游离氨基酸含量高,不利于早期抽薹的发生,而根直径较大种苗则相反,易于早抽薹。

Effects of seedlings with different root diameters on Angelica sinensis early bolting and physiological changes during the medicine formation period

The changing dynamics of soluble protein,free amino acids and soluble sugar content in the stems,leaves and roots before plant bolting were studied to explore the effects of seedlings with different root diameters on plant bolting and physiological changes with the objective of providing a theoretical basis for Angelica sinensis nutritional control to restrain early bolting.The thicker the root diameter,the higher the soluble protein content in stems,leaves and roots before bolting.The soluble protein conte...