| GA_3处理对天女木兰种子解除休眠过程中碳水化合物含量的影响 |
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| 引用本文： | 刘月洋,陆秀君,李天来,吴可.GA_3处理对天女木兰种子解除休眠过程中碳水化合物含量的影响[J].种子,2010,29(2). |
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| 作者姓名： | 刘月洋 陆秀君 李天来 吴可 |
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| 作者单位： | 1. 沈阳农业大学林学院,沈阳,110161
2. 沈阳农业大学园艺学院,沈阳,110161 |
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| 基金项目： | 辽宁省教育厅项目"天女木兰种子催芽机理及解除休眠技术的研究"，沈阳农业大学博士后基金项目"天女木兰种子休眠特性及机理的研究" |
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| 摘 要： | 研究了GA3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(GA3)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,1000mg/LGA3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,GA3水溶液处理诱导淀粉含量下降;蔗糖含量变化剧烈,在层积90d降至最低,果糖和葡萄糖含量显著增加;在层积后期(90～120d)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。
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| 关 键 词： | 天女木兰 淀粉 糖 层积 |
Effect of GA_3 on Carbohydrate Content During the Process of Dormancy-breaking in Magnolia Siebodii Seeds |
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| LIU Yue-yang,LU Xiu-jun,LI Tian-lai,WU Ke.Effect of GA_3 on Carbohydrate Content During the Process of Dormancy-breaking in Magnolia Siebodii Seeds[J].Seed,2010,29(2). |
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| Authors: | LIU Yue-yang LU Xiu-jun LI Tian-lai WU Ke |
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| Institution: | LIU Yue-yang1,LU Xiu-jun1,LI Tian-lai2,WU Ke1(1.Colledge of Forst,Shenyang Agricultural University,Shenyang 110161,China,2.Colledge of Horticulture,China) |
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| Abstract: | 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. |
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| Keywords: | GA_3 M sieboldiiK Koch seed starch carbohydrate GA_3 stratification |
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