淫羊藿种子产量与生境的关系

Relation between seed production and habitats of Epimedium brevicornum

关键词:  淫羊藿  种子生产  生境

Key words:  Epimedium brevicornum  seed production  habitats

摘要:

以四川省南充市金城山的淫羊藿为研究对象,对小檗科淫羊藿产果数量,种子生产和种子质量与生境的关系进行了研究。研究表明:不同生境的淫羊藿植株高度和花序长度不同,单株结果率也不同,单果产种量差异较小,出种量一般在1～8粒之间,但每个生境单果主要出种量不同。对千粒重和不同果枝结果率单因素方差分析表明,不同生境的淫羊藿种子千粒重有显著差异,不同生境的淫羊藿植株的主次果枝结果率也有显著差异。不同生境中的淫羊藿果实的虫食率也不同。淫羊藿种子的低种子数,小粒种子,而不同生境的结实率虽有差异,但是总体偏低,是导致淫羊藿种子难以收集的主要内因,也导致种群受干扰后不易恢复。

Abstract:

Epimedium brevicornum which belongs to Berberidaceae was sampled from Jincheng Mountain in Nanchong,Sichuan Province. The fruit production,seed production and seed quality in different habitats have been studied. The results showed that the stem height of plants and length of inflorescence of E.brevicornum varied with habitats,and the fruit quantity of each plant is also different. The seed quantity of each inflorescence have a little difference and the scope of seed production is often 1-8 seeds per individual fruit,but it varied with habitats. By One-way ANOVAs Analysis,the kilo-grain weight of seeds and the fruiting rate of the major inflorescence and lateral inflorescence show significant difference in different habitats. The insect predation rate was different among different habitats. Small seed number,small seed size and low fruiting rate are the reasons of low seed production of E.brevicornum. It is hard to recover quickly when the population was disturbed by humans.