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Allelopathy of Aqueous Extracts from Tamarix spp.on Seed Germination and Seedling Growth of Salsola collina Pall.
Author(s): 
Pages: 1836-1843
Year: Issue:  9
Journal: Acta Botanica Boreali-Occidentalia Sinica

Keyword:  化感作用水浸提液柽柳猪毛菜;
Abstract: 以一年生草本植物猪毛菜的种子和幼苗为受体,采用室内培养皿法,研究塔里木河下游柽柳水浸提液对猪毛菜种子及幼苗的化感作用.结果表明:(1)柽柳茎、根浸提液对猪毛菜种子萌发的抑制作用较为显著;柽柳茎浸提液0.08~0.20 g/mL浓度处理组的猪毛菜种子发芽率、发芽指数和活力指数与对照组之间均差异显著,其中种子发芽率分别减少了84.78%、89.12%、76.09%和67.39%;柽柳根浸提液对猪毛菜种子活力指数的化感作用较为显著,0.12 g/mL和0.16 g/mL浓度处理组与对照组相比差异极显著,化感效应指数分别为-0.960和-0.930.(2)柽柳茎浸提液处理中的猪毛菜幼苗苗长和根浸提液处理中的猪毛菜幼苗鲜重与对照组差异显著,两者在0.08g/mL浓度处理下分别增加了61.49%和52.63%;在其他浓度处理下则主要受抑制作用.(3)柽柳叶浸提液的综合化感效应呈现“W”型变化趋势;茎浸提液在高浓度时具有较强的综合化感效应;根浸提液的综合化感效应在0.12 g/mL浓度最强(RI=-0.749),在0.08 g/mL浓度时最弱(RI=-0.389).
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