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以克隆植物结缕草为对象,研究了其在温室内、外两种环境条件下的生长发育特征.结果表明:在相同环境条件下,主匍匐茎上的复合节、根、Ta和Tb分蘖的形成顺序依次后移,且形成速率均呈相互平行的直线关系.但在温室内,主匍匐茎上的复合节及其它器官的形成时间一般均较温室外晚.复合节间的形成是逐渐完成的,在温室外,一个复合节间的70%完成于该复合节形成后和下一个复合节间形成前,而其余则完成于下一个复合节间形成之后.在温室外,二级匍匐茎上复合节及其它器官的形成规律与主匍匐茎相似,但Tb的形成速率较慢.这与各级匍匐茎之间以及各相应构件器官之间资源传输与分配格局存在差异有关.通过主匍匐茎的向前直线型生长和次级匍匐茎的侧向伸展,结缕草分株被放置到更加广阔的生态空间,分株种群规模扩大,资源摄取能力增强,从而有助于提高结缕草的生态适应性和种间竞争能力.
The objective of this study was to investigate the growth and development of Zoysia japonica in clonal plants under two environmental conditions, including the greenhouse, the external environment and the external environment. The results showed that under the same environmental conditions, The formation order and then shift, and the formation rate were parallel to each other in a straight line relationship, but in the greenhouse, the main stolons on the composite section and other organs are generally late formation of the greenhouse outside the late formation of the compound internode is gradually completed , Outside the greenhouse, 70% of one composite node was completed after the composite node was formed and the next composite node was formed, while the rest was completed after the next composite node was formed. Outside the greenhouse, secondary stolons were compound The formation of nodes and other organs was similar to that of the main stolons, but the formation rate of Tb was slower, which was related to the differences of resource transport and allocation pattern between stolons and their corresponding organs and organs. Type growth and lateral stolon expansion, Zoysia ramets are placed in a broader ecological space, ramets expanded the size of the population, increased resource uptake, which helps to improve the knot Ecological adaptability and interspecific competition.