四种苔藓植物提取液对二种蓼科植物种子萌发和幼苗生长的影响

摘要

研究卵叶泥炭藓(Sphagnum ovatum),卷叶凤尾藓(Fissidens cristatus),弯叶灰藓(Hypnum callichroum)和大金发藓(Polytrichum commune)的水粗提取液对维管植物虎杖和皱叶酸模种子萌发和幼苗生长的影响.结果显示:四种苔藓植物的粗提取液对两种植物的种子萌发率并没有显著影响.然而,弯叶灰藓,、卵叶泥炭藓和卷叶凤尾藓的提取液抑制了皱叶酸模种子的活力指数.除此之外,卷叶凤尾藓还显著地抑制了它幼苗的干重.四种藓类的提取液对虎杖的种子活力指数和干重,但是卷叶凤尾藓的提取液对幼苗的生长有显著的影响.苔藓植物粗提取液对种子萌发和幼苗生长的影响的机制并不清楚,有待进一步研究.%In this paper,the possible influences of the aqueous extracts of four bryophytes(Sphagnum ovatum,Fissidens cristatus,Hypnum callichroum and Polytrichum commune)on the seed germination and young seedling growth of two vascular plants(Rumex crispus,Polygonum cuspidatum)were investigated.The results showed that the aqueous extracts of these four mosses didn't affect seed germination.However,the crude aqueous extracts of H.callichroum,S.ovatum and F.cristatus inhibited the vigor indices of R.crispus.Furthermore,the crude aqueous extract of F.cristatus significantly enhanced its dry seedling mass,and F.cristatus and S.ovatum significantly inhibited its seedling elongation.For P.cuspidatum,the crude aqueous extracts of four mosses had little effects on its vigor indices and dry mass,but the aqueous extract of F.cristatu had significantly negative influences on its seedling elongation.The possible mechanism that the aqueous extracts of these four bryophytes influencing seed germination and seedling growth of these two vascular plants was not determined.More studies are needed.