| 引用本文： |
-
黄仕训,王才明,王燕.稀有植物东京桐迁地保护研究[J].广西科学,1998,5(2):143-146. [点击复制]
- Huang Shixun,Wang Caiming,Wang Yan.Ex Situ Conservation of a Rare Species Deutzianthus tonkinensis[J].Guangxi Sciences,1998,5(2):143-146. [点击复制]
|
|
| 摘要: |
| 1984年始,在广西桂林雁山(中亚热带)酸性土壤上引种生长在广西龙州(北热带)石灰(岩)土壤的东京桐(Deutzianthus tonkinensis)种子和野生幼苗,1993年植株平均高4.14m,平均地径7.1cm,1994年开花结果,采集种子育苗,获180多株子代,目前子代生长正常。一年生苗在2℃并有北风时,部分叶脱落;没有北风,0℃以上不会受冻;定植多年的植株在-6℃以上时,部分叶受冻,在-2℃以上时,基本不受冻。在引种地,3月下旬开始萌芽,5月下旬开始现蕾,6月上旬开花,9月中旬果基本成熟落地。15株三种土壤的盆栽试验初步表明,幼苗对石灰土有一定的依赖性。迁地结果还初步表明,东京桐的适应性较同一分布区类型的蚬木、肥牛树、金丝李强。 |
| 关键词: 东京桐 稀有植物 迁地保护 |
| DOI： |
| 投稿时间：1997-07-28 |
| 基金项目: |
|
| Ex Situ Conservation of a Rare Species Deutzianthus tonkinensis |
|
Huang Shixun, Wang Caiming, Wang Yan
|
| (Guangxi Institute of Botany, Yanshan, Guilin, Guangxi, 541006) |
| Abstract: |
| Seeds and wild seedlings of Deutzianthus tonkinensis growing in the lime (rock) soil of Longzhou county (north tropical zone) of Guangxi were introduced into the acid soil of Yanshan, Guilin, Guangxi (middle subtropical zone) from 1984. Seedlings were 4. 14 min average height, 7. 1 cm in diameter at base in 1993, blossoming in 1994. The seeds from the parent tree were propagated and brought up over 184 generations which are growing well now. For one-year-old seedlings, some leaves were off at 2℃ with north wind; not been frosen at 0℃ and higher without north wind. Seedlings growing in the field for several years were freezed on so me leaves at-6℃ and higher, but basicly not be freezed at-2℃ and higher. In Yanshan, the trees sprouted in the last ten-day of March, budding in the last ten day of May, blossoming in the first ten-day of June, fruit maturing and droping down in the middle ten day of September. Seedling grow th in a certain ex tent depended on lime soil from soil trail in the pots (15 seedling s a nd three different soils). The trail also showed that adaptability of Deutzianthus tonkinensis was better than that of Burretiodendron hsienmu, Garcinia paucinervis and Cephalomappa sinense which are in the same zone. |
| Key words: Deutzianthus tonkinensis|rare species|ex situ conservation |
