CAJ | 학술논문

研究了GA_3对天女木兰种子在变温层积条件下解除休眠过程中碳水化合物的影响,以此探讨外源赤霉素(GA_3)对层积过程中天女木兰种子解除休眠的作用机理.结果表明,1 000 mg/L GA_3水溶液处理极显著促进天女木兰种子萌发,在整个层积过程中,GA_3水溶液处理诱导淀粉含量下降;蔗糖含量变化剧烈,在层积90 d降至最低,果糖和葡萄糖含量显著增加;在层积后期(90～120 d)果糖和葡萄糖含量下降,蔗糖含量上升,从而说明了碳水化合物参与并调节了天女木兰种子休眠解除这一过程.
연구료GA_3대천녀목란충자재변온층적조건하해제휴면과정중탄수화합물적영향,이차탐토외원적매소(GA_3)대층적과정중천녀목란충자해제휴면적작용궤리.결과표명,1 000 mg/L GA_3수용액처리겁현저촉진천녀목란충자맹발,재정개층적과정중,GA_3수용액처리유도정분함량하강;자당함량변화극렬,재층적90 d강지최저,과당화포도당함량현저증가;재층적후기(90～120 d)과당화포도당함량하강,자당함량상승,종이설명료탄수화합물삼여병조절료천녀목란충자휴면해제저일과정.
In order to investigate the mechanism of Gibberellic acid (GA_3) on dormancy-breaking of Magnolia siebodii seeds during stratification process. Under alternating temperature stratification condition, the effect of GA_3 on the change of carbohydrate content was studied during the process of breaking dormancy in M. sieboldi-iK. Koch seed. The results were as following: 1 000 mg/L GA_3 of water solution treatment significantly promoted germination rate of M. sieboldiiK. Koch seed, it induced to stareh content reducing during stratification process, sucrose content had rapidly change and reduced to the minimum extent at the 90 d, however, fructose content and glucose content significantly accumulated; fructose content and glucose content reduced at post-stratifica-tion(90- 120 d),but sucrose content increased at the same time. This phenomenon indicated that carbohy-drate participated in and regulated the course of breaking dormancy in M. sieboldiiK. Koch seed.