应用生态学报2018，Vol.29Issue(3)：805-810,6.DOI:10.13287/j.1001-9332.201803.001
松嫩平原不同生育期虎尾草无性系构件生长与生物量分配
Module growth and biomass allocation of Chloris virgate clone at different growth stages in Songnen Plain,China
摘要
Abstract
The growth characteristic and strategies of Chloris virgate at different growth stages were examined in Songnen Plain by analyzing the quantitative characters and biomass allocation of aboveground and belowground parts at shooting and ripening stages in C. virgate population,with a large amount of sampling. The results showed that height,total root length,total root surface area,root volume,aboveground biomass,belowground biomass,and total biomass were significantly different between the two growth stages. There was power allometric relationship between total biomass and biomass allocation of aboveground and belowground,respectively. At shooting stage,there was a significant linear isometric growth between the total biomass and the number of ramets,total root length,total root surface area and root volume,but there was a power allometric growth at ripening stage. C. virgate clone showed different growth strategies under different growth stages,with a priority expansion strategy of clonal outer space at shooting stage and a complementary and expansive strategy in the inner and outer space of the clones at ripening stage.关键词
虎尾草/拔节期/完熟期/构件/生物量分配/同速生长/异速生长Key words
Chloris virgate/shooting stage/ripening stage/module/biomass allocation/isogony growth/allometry growth引用本文复制引用
田雪,李海燕,杨允菲..松嫩平原不同生育期虎尾草无性系构件生长与生物量分配[J].应用生态学报,2018,29(3):805-810,6.基金项目
本文由国家自然科学基金项目(31472134,31670427,31672471)、国家重点研发计划项目(2016YFC0500602)和吉林省科技厅自然科学基金项目(20170101150JC)资助. （31472134,31670427,31672471）
