植物生态学报 ›› 2007, Vol. 31 ›› Issue (4): 625-629.DOI: 10.17521/cjpe.2007.0080
收稿日期:
2006-06-22
接受日期:
2007-01-05
出版日期:
2007-06-22
发布日期:
2007-07-30
通讯作者:
祝宁
作者简介:
* E-mail: ecochuning@hotmail.com基金资助:
WEI Xiao-Hui, YIN Dong-Sheng, ZHU Ning*()
Received:
2006-06-22
Accepted:
2007-01-05
Online:
2007-06-22
Published:
2007-07-30
Contact:
ZHU Ning
摘要:
在自然条件下,风箱果(Physocarpus amurensis)主要靠克隆繁殖维持种群。植物克隆构型的可塑性变化对于其适应环境异质性具有重要意义。为探求风箱果的克隆构型及根茎生长动态,研究了其地下根茎的构筑型、形态特征、根茎的直径随长度变化的规律和地下根茎间的夹角。结果表明:风箱果的地下根茎的构筑型基本上属于游击型;风箱果无性系平均含有(6±2)个分株和(9.33±3.48)个根茎;根茎的直径随长度变化的曲线为抛物线型;分枝夹角较为稳定,多为30°和70°。风箱果生产大量的根茎系统,每一个克隆片段能够占据一定的空间,以保证自身生存和维持种群繁衍。
魏晓慧, 殷东生, 祝宁. 自然条件下风箱果的克隆构型. 植物生态学报, 2007, 31(4): 625-629. DOI: 10.17521/cjpe.2007.0080
WEI Xiao-Hui, YIN Dong-Sheng, ZHU Ning. CLONAL ARCHITECTURE OF PHYSOCARPUS AMURENSIS IN NATURAL CONDITIONS. Chinese Journal of Plant Ecology, 2007, 31(4): 625-629. DOI: 10.17521/cjpe.2007.0080
基株特征 Genet characteristics | 平均值 (Mean±SE) | 分布范围 Range | 变异系数 C.V. (%) |
---|---|---|---|
分株数 Number of ramates | 6±2 | 2~8 | 57.74 |
根茎数 Number of rhizomes | 9.33±3.48 | 3~15 | 64.61 |
根茎总长度 Total rhizome length | 163.30±54.17 | 55~220 cm | 57.46 |
单个根茎平均长度 Mean length of individual rhizome | 17.50±3.33 | 3~94 cm | 100.90 |
表1 风箱果在自然生境中的克隆生长特征
Table 1 The clonal growth characteristics of Physocarpus amurensis in natural habitats
基株特征 Genet characteristics | 平均值 (Mean±SE) | 分布范围 Range | 变异系数 C.V. (%) |
---|---|---|---|
分株数 Number of ramates | 6±2 | 2~8 | 57.74 |
根茎数 Number of rhizomes | 9.33±3.48 | 3~15 | 64.61 |
根茎总长度 Total rhizome length | 163.30±54.17 | 55~220 cm | 57.46 |
单个根茎平均长度 Mean length of individual rhizome | 17.50±3.33 | 3~94 cm | 100.90 |
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