摘要
研究内蒙古荒漠区锦鸡儿属优势种垫状锦鸡儿灌丛结构、分株特征、繁殖倾向和克隆生长特性.结果表明:在荒漠区,垫状锦鸡儿的营养繁殖占主导地位,有性繁殖为辅;其营养繁殖由枝条克隆产生无性系分株,克隆生长构型为密集型.较高的无性繁殖比例、密集型的克隆构型和发达的根系使垫状锦鸡儿能很好地适应荒漠区的干旱环境,并成为荒漠区的优势种.
In order to understand the reproductive characteristics of Caragana tibetica in the desert areas and reveal its mechanism of adaptation to environment,the shrub structure,ramet characteristics,breeding tendency and clonal growth characteristics of C.tibetica clusters in the Alshan desert region of the Inner Mongolia Plateau were studied.The results showed that clonal propagation of C.tibetica was the dominant way in the arid desert region,and C.tibetica reproduced ramets mainly by branches covered by sand and had a clonal architecture of "phalanx".C.tibetica was well adapted to the arid environment of desert region by the higher proportion of asexual reproduction,phalanx clonal architecture and well-developed root systems,which made it be one of the dominant species in the desert region.
出处
《天津师范大学学报(自然科学版)》
CAS
北大核心
2011年第4期55-59,共5页
Journal of Tianjin Normal University:Natural Science Edition
基金
国家自然科学基金资助项目(31170381)
国家重点基础研究发展规划项目(2007CB106802)
关键词
垫状锦鸡儿
无性繁殖
干旱荒漠区
适应性
Caragana tibetica
asexual reproduction
arid desert region
adaptation