盐角草的繁殖输出及繁殖分配
2015-09-02魏梦浩黄俊华
魏梦浩 黄俊华
摘 要:对吐鲁番艾丁湖盐角草(Salicornia europaea)的繁殖输出及繁殖分配的特型进行数据分析研究。结果表明:该地区盐角草植株生物量的增减与繁殖分配的变化相关性并不大,由此可得出该物种的繁殖分配受多方面因素影响,如自身遗传性等,不单受生境原因的控制。3类大小的植株拥有各自特殊的形态特征,个体高大的植株多分枝,生物量和种子总量都是最多的;个体矮小的植株不存在分枝,生物量和种子总量都是最少的,即植株的种子产量是跟随其个体大小的增大而增加的。盐角草个体随着质量的增加,即个体由小到大,产生出更多的A型种子,而B、C型种子的产量则相对减少,但在各大小植株中C型种子的比重相对平稳。
关键词:盐角草;繁殖输出;艾丁湖;繁殖对策
中图分类号:S540.34 文献标识码:A DOI 编码:10.3969/j.issn.1006-6500.2015.09.034
Reproductive Output and Reproductive Allocation of Salicornia europaea
WEI Meng-hao,HUANG Jun-hua
(College of Forestry and Garden, Xinjiang Agriculture University, Urumqi, Xinjiang 830052,China)
Abstract: The reproductive output and reproductive allocation of Salt Angle Grass (Salicornia europaea) in Turpan Aydin Lake were analyzed based on research data. The results showed that changes according to the increase of reproductive allocation in the area of glasswort plant biomass was not large, the reproductive allocation of this species was influenced by many factors, such as their genetic control, not only by reason of the unilateral habitat. The 3 kinds of plants had their own special morphological characteristics, tall plant had much branched individual, total biomass and seed were the largest; dwarf plants didnt has branches, the total biomass and seed were the least, the seed yield of plants was increased following its size increased. With increasing of mass, that is, Salicornia individual from small to large, produced more seeds and A type, B and C type seed yield decreases, but the C type seeds proportion was relatively stable.
Key words: Salicornia europaea; reproductive output; Aydingkol Lake; reproductive strategy
繁殖(Reproduction)是生物为了种族的延续而进行的产生后代的生命过程,即产生新的个体的过程。它是植物生长发育过程中的重要组成部分,同样是种群繁衍核心以及生态系统演替的基础[1]。
繁殖对策(Reproductive strategy)表示的是植物在发育进程中,通过合理有效的利用资源,以其独有的繁殖特性来适应异质环境,增强植物对环境异质化适应力的过程。在适应高盐环境时空异质化过程中,植株的各个生长阶段都是必不可缺的,怎样才能将有限的资源进行合理分配以及在各个器官之间如何分配,已成为植物繁殖对策研究领域的核心内容[2]。
繁殖分配(Reproductive allocation,简称……
