摘要
对吉林省东部山区的3个粗茎鳞毛蕨种群进行了形态特征及其生态可塑性的研究。结果表明:林分郁闭度和光照条件显著影响粗茎鳞毛蕨种群的株高、冠幅、叶片数量、叶片宽度、孢子叶数等形态指标。方差分析结果表明:5个形态指标在种群间的差异程度依次为株高>冠幅>孢子叶数>叶数>叶宽。可见,不同光环境对粗茎鳞毛蕨种群的株高影响最大,对其繁殖能力也有较大影响,而对叶片数量和叶片宽度影响最小。尽管粗茎鳞毛蕨常生长在林下,有一定的耐阴性,但是过阴环境不利于粗茎鳞毛蕨种群的生长发育和繁殖更新。
The morphologic characters and the ecological plasticity of three Dryopteris crassirhizoma populations were studied. The results showed that plant height, crown breadth, leaf number, leaf breadth and sporophyll number of Dryopteris crassirhizoma populations were influenced by forest crown density and light condition. The results of variance analysis showed the variant extent of above 5 morphologic characters was plant height 〉 crown breadth 〉 sporophyll number 〉 leaf number 〉 leaf breadth in turn. It was obvious that the effect of different hght environment on plant height was the greatest, and the effect on reproducing ability was also greater, and the effect on leaf number and leaf breadth was the lowest. Though Dryopteris crassirhizoma usually vegetated under forest and had definite overcast endurance, the excessively overcast environment went against the growth and reproduction of Dryopteris crassirhizoma population.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2006年第4期398-401,406,共5页
Journal of Jilin Agricultural University
基金
国家自然科学基金资助项目(30570173)
吉林省科技发展重点项目(20040901-02-09)
国家科技部科技攻关项目(2004BA907A17-03)
吉林省部共建国家重点实验室培育基地开放基金资助项目(DS2004-20)
关键词
粗茎鳞毛蕨
种群
形态性状
生态可塑性
Dryopteris crassirhizoma
population
morphologic character
ecological plasticity
