榆属

榆属树种遗传改良研究现状及思考。

Research status and some consideration in genetic improvement of elm species .

一般在干的种子中主要是β-淀粉酶或完全是β-淀粉酶，但是3种榆属树种干种子α-淀粉酶也存在。

There is mainly or totally β - amylase in the dry seeds , but three elm species has α - amylase in the dry seeds .

Q聚类结果表明榆属栽培变种和半同胞家系聚为一组；榆属种间大部分聚类结果和传统分类吻合但白榆分类和传统不符。

Q cluster showed that Ulmus varieties and half-sib families were in the same group . The results of cluster were similar to the traditional classification except siberian elm .

榆属树种的叶子结构与抗虫性的关系

Some Relationships Between Leaf structure and Resistance to Insects of Elms

5种地榆属植物花粉形态的扫描电镜鉴别

Pollen Morphology Identification of Five Species of Medicinal Sanguisorba with Electron Microscope

山西上新世榆属炭屑的发现及其生态学意义

Pliocene charcoal woods of Ulmus from Taigu basin , Shanxi and their ecological implication

各种各样榆属树的任意一种，；是重要的板材或绿荫树。

Any of various trees of the genus Ulmus : important timber or shade trees .

中国榆属12种2变种叶的比较解剖学研究

The comparative anatomical study on leaves of 12 species and 2 varieties of Ulmus in China

苜蓿目中的双子叶植物科包括；榆树属；朴属；水榆属；山黄麻属。

A dicot family of the order Urticales including : genera ulmus ; celtis ; planera ; trema .

全世界共有榆属资源30余种，我国有25种6个变种。

There are thirty genus Ulmus species in the world and twenty-five species and six variants in China .

长序榆的发现佐证了榆属植物发源于亚洲，对研究北美和东亚的植物区系有重大意义。

The discovery of U.elongata showed that Ulmus species extended from Asia , significantly prompting further research into North America and East Asia flora .

翅榆一种美国东南部榆树（翼枝长序榆榆属），具有有翼和软木质的小枝这条长凳是榆木制的。

An elm tree ( Ulmus alata ) of the southeast United States , having twigs with winged , corky edges . This bench is made of elm .