为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Phylogenetics of Chilopsis and Catalpa (Bignoniaceae) was elucidated based on sequences of chloroplast ndhF and the nrDN......

A new cafferic ester,(+)-2-(1-hydroxyl-4-oxocyclobexyl) ethyl caffeate,was isolated from the 80% ethanol extract of the ......

[目的]为了找出紫葳科具二裂片敏感性柱头种性配置结构的规律。[方法]选取美国凌霄、两头毛和角蒿为材料,对它们的柱头运动规律、......

对紫葳科18属27种花粉进行了光镜和扫描电镜的观察,其中有些种是第一次观察或报道.紫葳科花粉明显地属多型花粉,萌发孔类型和纹饰......

对角蒿属(Incarvillea Juss.)14个种(4变种,2居群)的花粉进行了扫描电镜观察.角蒿属花粉形态较为相似,为单粒花粉,花粉粒扁球形至......