Short-day treatment during the growing period limits shoot growth and increases frost hardiness of hybrid aspen plants in the nursery

编号 zgly0001329175

文献类型 期刊论文

文献题名 Short-day treatment during the growing period limits shoot growth and increases frost hardiness of hybrid aspen plants in the nursery

作者 Jaana Luoranen  Heikki Smolander 

作者单位 The Finnish Forest Research Institute Suonenjoki Research Unit Juntintie 154 FIN-77600 Suonenjoki Finland  The Finnish Forest Research Institute Suonenjoki Research Unit Juntintie 154 FIN-77600 Suonenjoki Finland 

母体文献 Forestry Studies in China 

年卷期 2007年04期

年份 2007 

分类号 S723 

关键词 frost hardiness  nursery performance  Populus  shoot elongation  short-day treatment 

文摘内容 In Finland, under nursery conditions hybrid aspen may continue their shoot growth until early September. Thus, frost hardening is usually delayed. To solve this problem, we used a three-week period of short-day (SD) treatment between late July and mid-August. During autumn after frost exposure, frost hardiness (FH) was assessed three times with a stem-browning test. The re-sults showed that after SD treatment shoot growth ceased and FH increased when compared to untreated hybrid aspen. Furthermore, the height of SD-treated hybrid aspen varied much less than that of the control plants. We conclude that SD treatment in the nursery during the growing period can be used as a supplementary method for producing well-hardened and uniform hybrid aspen plants.