长白山区华北翦股颖无性系构件的结构及生长  

Structure and growth pattern of Agrostis clavata clone modules in Changbai Mountain area

作　　者：宋金枝[1] 李海燕[2] 周丽威[1] 

机构地区：[1]通化师范学院生物系,吉林通化134002 [2]东北师范大学草地科学研究所植被生态科学教育部重点实验室,长春130024

出　　处：《生态学杂志》2011年第10期2145-2148,共4页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(30901049)资助

摘　　要：采用大样本随机挖取单个无性系的调查和测定方法,分析了长白山区华北翦股颖无性系构件的结构及生长规律。结果表明,在籽实乳熟期,华北翦股颖无性系构件是由营养枝和生殖枝组成,其中,以生殖枝数量和生物量所占比例最大,分别为93.3%和97.1%。华北翦股颖无性系构件的关系中,生殖枝数量和生物量以及分株总数量和总生物量均随着丛径的增加呈幂函数异速生长(R2=0.661～0.712)。生殖枝数量与分株总数量之间以及生殖枝生物量与分株总生物量之间均呈极显著线性正相关(R2为0.997和0.965)。Based on the investigation and measurement of the single clone randomly collected from large samples,this paper analyzed the structure and growth pattern of Agrostis clavata clone modules in Changbai Mountain area.The modules of A.clavata clone at seed milk stage were consisted of vegetative and reproductive tillers,and the reproductive tillers had the largest number and biomass,occupying 93.3% and 97.1% of total,respectively.With the increase of cluster diameter,the number and biomass of reproductive tillers as well as the total number and total biomass of vegetative and reproductive tillers increased by power function,with the coefficients of determination being 0.661-0.712.The reproductive tillers number and biomass showed a linear increase with the increasing number and biomass of total tillers,and the coefficients of determination were 0.997 and 0.965,respectively.

关 键 词：华北翦股颖 无性系 构件 异速生长 同速生长 

分 类 号：Q948[生物学—植物学]