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赤霉素与脱落酸对一串红种子休眠及发芽的影响
引用本文:曾丽,赵梁军.赤霉素与脱落酸对一串红种子休眠及发芽的影响[J].上海交通大学学报(农业科学版),2001,19(4):276-279.
作者姓名:曾丽  赵梁军
作者单位:1. 上海交通大学,植物科学系,
2. 中国农业大学,观赏园艺系,
摘    要:通过滤纸床发芽方法测定一串红种子发芽率.采用HPLC测定种子发育及贮藏过程中内源GA3和ABA含量,并观察外源GA3、ABA以及去掉种皮对种子休眠及发芽的影响.结果表明,新采收的不同成熟度的种子发芽率不同,未完全成熟的二级种子最高,完全成熟的一级种子次之;随成熟度提高,种子中内源GA3含量逐渐下降.在室温或低温干燥贮藏条件下,随贮藏时间延长,发芽率增加,3个月左右达到最大值;干种子内源GA3含量却随贮藏时间延长而降低,仅在后期有所上升;外源GA 3处理对新采收和贮藏1-2个月的种子发芽率促进作用明显,但随贮藏时间延长而减弱.去掉种皮,裸胚发芽率增加幅度很大.在种子发育及贮藏过程中均没测出ABA,外源ABA处理种子,种子发芽率没明显变化.

关 键 词:一串红  休眠  贮藏  发芽率  GA3  ABA
文章编号:1000-193X(2001)04-0276-04
修稿时间:2001年7月9日

Effects of GA3 and ABA on seed development and germination of Salvia splendens
ZENG Li ,ZHAO Liang jun.Effects of GA3 and ABA on seed development and germination of Salvia splendens[J].Journal of Shanghai Jiaotong University (Agricultural Science),2001,19(4):276-279.
Authors:ZENG Li  ZHAO Liang jun
Affiliation:ZENG Li 1,ZHAO Liang jun 2
Abstract:In this experiment, filter paper bed method was used to measure the germinating rate of Salvia splendens. The endogenous GA 3 and ABA contents were detected by HPLC. The results indicated that the seed germinating rates were different, depending on maturity degrees of the seeds just after harvesting. The second grade seeds fully unmatured had the highest germinating rate, and the first grade seeds fully matured were following. Endogenous GA 3 content decreased gradually in the seeds with the seed maturity. The seed germinating rates were increased with extension of storage time, being the highest rate for 3 months after storage, whatever the seeds were stored under room condition or under the dried low temperature condition. However, the endogenous GA 3 content decreased followed by extension of the storage time and had a slightly increase only by the end of storage. Application of GA 3 had a remarkable effect on the seed germinating rate only for seeds of both new harvested and stored for 1 to 2 months. The germinating rate was highly increased by removing the seed coat. No ABA contents were detected in the seeds either in the seed development or during the seed storage, and the seed germinating rates had no remarkable changes by applications of ABA.
Keywords:Salvia splendens  dormancy  storage  germination rate  GA  3  ABA
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