[an error occurred while processing this directive]

Plant Diversity ›› 2008, Vol. 30 ›› Issue (04): 440-446.DOI: 10.3724 SP.J.1143.2008.07233

• 研究论文 • 上一篇    下一篇

ABA 对黑黄檀种子萌发的抑制作用以及其他植物激素对ABA 的拮抗作用

邓志军1 , 2 , 宋松泉3   

  1. 1 中国科学院西双版纳热带植物园, 云南勐腊 666303 ; 2 中国科学院研究生院, 北京 100049;3 中国科学院植物研究所, 北京 100093
  • 收稿日期:2007-10-10 出版日期:2008-08-25 发布日期:2008-08-25

Inhibitory Effect of ABA on Seed Germination of Dalbergia fusca (Leguminosae) and Antagonism of Other Phytohormones to ABA

DENG Zhi-Jun1 , 2 , SONG Song-Quan3   

  1. 1 Xishuangbanna Tropical Botanical Garden , Chinese Academy of Sciences , Mengla 666303 , China ;
    2 Graduate University of Chinese Academy of Science, Beijing 100049 , China ;
    3 Institute of Botany , Chinese Academy of Sciences, Beijing 100093 , China
  • Received:2007-10-10 Online:2008-08-25 Published:2008-08-25

PDF (PC)

1803

摘要： 以云南特有濒危树种黑黄檀( Dalbergia fusca) 的种子为材料, 研究了脱落酸(ABA) 对种子萌发的抑制作用, 以及种子萌发过程中吲哚乙酸( IAA) 、赤霉酸(GA3 )、6-苄基腺嘌呤(6-BA) 和乙烯利对ABA的拮抗作用。黑黄檀种子萌发的适宜温度为30℃。交替光照(14 h 光照和10 h 黑暗) 以及黑暗对种子萌发没有明显的影响。0 . 001～0 . 1 mmol/L ABA 不影响种子的萌发率, 但降低种子的萌发进程; 1 mmol􊄯L 和2 . 5mmo􊄯l L ABA 显著地抑制种子的萌发率和萌发进程。种子的萌发率不被0 . 0001 ～ 1 mmo􊄯l L IAA 和GA3 、
0 . 0001～0 . 1 mmol/L 6-BA、以及0 . 001～10 mmol/L 乙烯利( 乙烯供体) 的影响,但被1 mmol􊄯L 6-BA 抑制。1mmol/L ABA 对种子萌发的抑制作用能被0 . 01～1 mmol/L IAA、0 . 01～1 mmol/L GA3 、0 . 001～0 .1 mmol/L 6-BA 和0 . 1～10 mmol􊄯L 乙烯利所拮抗, 而且这种拮抗作用与植物激素的类型和浓度有关。0. 01 mmol/L 6-BA 和0 . 1 mmol/L 乙烯利对1mmol/L ABA 抑制作用的拮抗不能被添加0 . 001 mmol/L IAA 或者0 .001 mmol/L GA3 加成。但0 . 1mmol/L 乙烯利对1 mmol/L ABA 抑制作用的拮抗能够被添加0 . 01 mmol/L 6-BA 或者0 .1 mmol/L 6-BA 加成, 导致更高的萌发率和幼苗生长。

关键词: 脱落酸, 黑黄檀, 乙烯利, 植物激素的相互作用, 种子萌发

Abstract: Seeds of Dalbergia fusca , an endangered tree species endemic to Yunnan province of China were used to study the inhibitory effects of abscisic acid (ABA) and the antagonism of IAA, GA3 , 6-BA and ethephon to ABA in the seed germination . The optimum temperature for the seed germination was about 30℃ . There was no different effects of alternating photoperiod ( 14 h light and 10 h dark) and darkness on the seed germination . After treated by 0 .01 - 0. 1 mol/L ABA, the seed germination percentage was not affected , but the time course of germination was decreased , while those levels were
dramatically inhibited by 1 mmol/L and 2 . 5 mmol/L ABA . The seed germination percentage was not affected by 0 . 0001 -1mmol/L indole-3- acetic acid ( IAA) , gibberellic acid (GA3 ) , 0 . 0001 - 0 . 1mmol/L 6-benzyladenine ( 6-BA) , and 0 . 001 - 10 mmol/L ethephon ( the ethylene donor) , but was inhibited by 1mmol/L 6-BA . The inhibition effect of 1 mmol/L ABA on seed germination was antagonized by 0 . 01 - 1mmol/L IAA, 0 . 01 - 1 mmol/L GA3 , 0. 001 - 0 . 1mmol/L 6-BA, and 0 . 1--10 mmol/L ethephon , which were phytohormone type- and concentration-dependent . The antagonistic actions of 0 . 01mmol/L 6-BA and 0 . 1 mmol/L ethephon to 1 mmol/L ABA inhibition could not be increased by addition of 0 . 001 mmol/L IAA or 0 . 001 mmol/L GA3 . The antagonistic action of 0 .1 mmol/L ethephon to 1mmol/L ABA inhibition , however , could be increased by addition of 0 . 01mmol/L 6-BA or 0. 1 mmol/L 6-BA, which resulting in higher germination percentage and enhancing seedling growth .

Key words: Abscisic acid

中图分类号: 

Copyright © Plant Diversity, All Rights Reserved.
Powered by Beijing Magtech Co. Ltd