Primary Study on Reproduction Strategies of Caragana roborovskyi in the Arid Desert Region

doi:10.11733/j.issn.1007-0435.2012.03.008

Acta Agrestia Sinica ›› 2012, Vol. 20 ›› Issue (3): 434-438.DOI: 10.11733/j.issn.1007-0435.2012.03.008

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Primary Study on Reproduction Strategies of Caragana roborovskyi in the Arid Desert Region

ZHANG Jian-hua, MA Cheng-cang, GAO Yu-bao

Tianjin Key Laboratory of Cyto-Genetical and Molecular Regulation, College of Life Science, Tianjin Normal University, Tianjin 300387, China

Received:2011-10-25 Revised:2012-02-03 Online:2012-06-15 Published:2012-07-05

干旱荒漠区荒漠锦鸡儿种群繁殖对策研究

张建华, 马成仓, 高玉葆

天津师范大学生命科学学院天津市细胞遗传与分子调控重点实验室, 天津 300387

通讯作者: 马成仓,E-mail:machengcang@163.com
作者简介:张建华(1978- ),女,山西忻州人,硕士,研究方向为内蒙古高原锦鸡儿属植物综合生态适应对策,E-mail: wj123-2007@163.com
基金资助:
国家自然科学基金项目(31170381)(30960083);国家重点基础研究发展规划项目(2007CB106802)资助

Abstract

Abstract: To understand the reproductive characteristics and adaptation strategies of Caragana roborovskyi in the arid desert. The breeding tendency, clonal growth and ramets characteristics of C. roborovskyi in the Alshan desert region of the Inner Mongolia Plateau were studied. Results showed that C. roborovskyi propagated not only by asexual reproduction but also by sexual reproduction. The proportion of asexual reproduction (95.8%) was significantly higher than that of sexual reproduction (4.2%). C. roborovskyi produced ramets mainly by sprouted root and established clonal architecture known as "Guerilla". Overall, C. roborovskyi adapted to both arid and barren environment of Alshan desert region by "Guerilla" clonal propagation and well-developed root system which determined it as the dominant species in the desert.

Key words: Caragana roborovskyi, Asexual reproduction, Clonal growth, Arid desert region, Adaptation

摘要： 通过调查荒漠锦鸡儿(Caragana roborovskyi)灌丛的繁殖倾向、克隆生长特性及分株特征,研究荒漠锦鸡儿的繁殖特点并探讨其适应干旱荒漠环境的机制。结果表明:荒漠区荒漠锦鸡儿既可以进行无性繁殖,又可以进行有性繁殖,且无性繁殖所占的比例(95.8%)明显高于有性繁殖(4.2%)。荒漠锦鸡儿由根萌蘖产生无性系分株,其克隆生长构型为游击型。综合分析认为,荒漠锦鸡儿通过游击型克隆繁殖和发达的根系适应荒漠区的干旱贫瘠环境,使其成为荒漠区的优势种。

关键词: 荒漠锦鸡儿, 无性繁殖, 克隆生长, 干旱荒漠区, 适应性

CLC Number:

Q948

ZHANG Jian-hua, MA Cheng-cang, GAO Yu-bao. Primary Study on Reproduction Strategies of Caragana roborovskyi in the Arid Desert Region[J]. Acta Agrestia Sinica, 2012, 20(3): 434-438.

张建华, 马成仓, 高玉葆. 干旱荒漠区荒漠锦鸡儿种群繁殖对策研究[J]. 草地学报, 2012, 20(3): 434-438.

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Primary Study on Reproduction Strategies of Caragana roborovskyi in the Arid Desert Region

干旱荒漠区荒漠锦鸡儿种群繁殖对策研究

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