| Short-day treatment during the growing period limits shoot growth and increases frost hardiness of hybrid aspen plants in the nursery |
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| 引用本文： | Zhang Gang Jaana Luoranen Heikki Smolander. Short-day treatment during the growing period limits shoot growth and increases frost hardiness of hybrid aspen plants in the nursery[J]. 中国林学(英文版), 2007, 9(4): 262-266. DOI: 10.1007/s11632-007-0041-z |
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| 作者姓名： | Zhang Gang Jaana Luoranen Heikki Smolander |
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| 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 |
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| 摘 要： | 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.
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| 关 键 词： | 苗圃 森林 抵御能力 根系 |
| 收稿时间： | 2007-06-24 |
| 修稿时间： | 2007-08-12 |
Short-day treatment during the growing period limits shoot growth and increases frost hardiness of hybrid aspen plants in the nursery |
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| Zhang Gang,Jaana Luoranen,Heikki Smolander. Short-day treatment during the growing period limits shoot growth and increases frost hardiness of hybrid aspen plants in the nursery[J]. Forestry Studies in China, 2007, 9(4): 262-266. DOI: 10.1007/s11632-007-0041-z |
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| Authors: | Zhang Gang Jaana Luoranen Heikki Smolander |
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| Affiliation: | 1. College of Horticulture,Agricultural University of Hebei,Baoding,071001,Hebei,P. R. China
2. The Finnish Forest Research Institute,Suonenjoki Research Unit, Juntintie 154,FIN-77600,Suonenjoki,Finland |
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| Abstract: | 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. |
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| Keywords: | frost hardiness nursery performance Populus shoot elongation short-day treatment |
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