Different responses of northern and southern ecotypes of Betula pendula to exogenous ABA application
文献类型：期刊论文
| 作者 | Li, CY ; Junttila, O ; Heino, P ; Palva, ET |
| 刊名 | TREE PHYSIOLOGY
 |
| 出版日期 | 2003 |
| 卷号 | 23期号:7页码:481_487 |
| 关键词 | cold acclimation dormancy freezing tolerance growth cessation |
| ISSN号 | 0829-318X |
| 通讯作者 | Palva, ET, Univ Helsinki, Div Genet, Dept Biosci, Viikki Bioctr, POB 56, FIN-00014 Helsinki, Finland. |
| 中文摘要 | We investigated responses of northern and southern ecotypes of silver birch (Betula pendula Roth) to exogenous abscisic acid (ABA) under controlled environmental conditions to determine the role of ABA in cold acclimation and dormancy development. Abscisic acid was sprayed on the leaves and changes in freezing tolerance, determined by the electrolyte leakage test, and bud dormancy were monitored. Applied ABA induced cold acclimation but had no effect on growth cessation in seedlings grown in long day conditions (LD, 24-h photoperiod at 18 degreesC). It enhanced freezing tolerance and accelerated growth cessation in seedlings grown in short day conditions (SD, 12-h photoperiod at 18 degreesC), and slightly enhanced freezing tolerance in seedlings grown at low temperature (LT, 24-h photoperiod at 4 degreesC) in both ecotypes. There were distinct ecotypic differences in ABA-induced cold acclimation and dormancy development. The northern ecotype was more responsive to applied ABA than the southern ecotype, resulting in more rapid development of freezing tolerance in all treatments, and earlier dormancy development in SD. When plants were grown in a photoperiod just above the critical photoperiod for the ecotype (defined as the longest photoperiod that induces growth cessation), applied ABA caused growth cessation and dormancy development. Compared with ABA-treated seedlings grown in SD, dormancy development was delayed in ABA-treated seedlings exposed to a near-critical photoperiod, but even in this treatment dormancy developed faster in the northern ecotype than in the southern ecotype. |
| 学科主题 | Forestry |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/21430]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Li, CY,Junttila, O,Heino, P,et al. Different responses of northern and southern ecotypes of Betula pendula to exogenous ABA application[J]. TREE PHYSIOLOGY,2003,23(7):481_487. |
| APA | Li, CY,Junttila, O,Heino, P,&Palva, ET.(2003).Different responses of northern and southern ecotypes of Betula pendula to exogenous ABA application.TREE PHYSIOLOGY,23(7),481_487. |
| MLA | Li, CY,et al."Different responses of northern and southern ecotypes of Betula pendula to exogenous ABA application".TREE PHYSIOLOGY 23.7(2003):481_487. |
入库方式： OAI收割
来源：成都生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。