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1·There exists 3158 wild species in 966 genera and 181 families of vascular plant in Henan Province.

河南省有丰富的野生植物资源，有维管植物181科，966属，3158种。

2·Based on analysis the characters of vascular plant resources, some Suggestions about utilization and conservation are put forward.

分析了其资源特点，并对其保护管理和开发利用提出一些建议。

3·There are 521 species in the forest of Pinus sylvestris of Daxing'anling area, of which 35 species of lichen, 48 species of bryophyta, 441 species vascular plant.

大兴安岭樟子松林组成植物521种，其中包括地衣植物35种，苔藓植物48种，维管束植物441种；

4·Bryophytes comprise is a big family of plant species. Because of their limited competition, bryophytes usually grow in hard habitats, where no vascular plants can live.

苔藓植物是植物界中的一大类群，其竞争力非常有限，常生长在维管束植物无法生存的环境中。

5·Auxin also causes the plant to develop a vascular system, to form lateral roots, and to produce ethylene.

生长素还能使植物形成维管系统，形成侧根，并产生乙烯。

6·Plant hormones controlled the formation of graft unions through influencing the time and the number of vascular bridges formation between the stock and the scion.

植物激素通过影响砧木和接穗间维管束桥形成的时间和数目调控嫁接组合的发育。

7·The tree-shaped structure of nodular vascular framework is connected with the vascular system of plant in the base, It was derived originally from the plant lateral root primordium.

它在基部与植物维管系统联成一体，在本质上是由植物侧根原基衍生而来。

8·The root-stem transition region and the root in the elder plant reproduce the abnormal secondary structure which is similar to the rode caused by separation of the vascular bundle.

在多年生植株根茎过渡区出现的“绳索状”异常结构则是由于其内部维管束裂分的结果。

9·The effects of the panicle length, branch distribution, number of spikelets, seed set percentage, neck vascular bundles and plant weight per stem on spikelet number per panicle were analyzed.

分析了穗长、枝梗分布、枝梗颖花数及其结实率、穗部维管束数目和开花期单茎干物重对穗粒数的影响。