银杏

Objective To study the protective action of compound agent madeup with effective ingredients of Hirudo and Rhizoma chuanxiong and Folium Ginkgo in animal ischemic cerebral infarction.

目的 探讨用中药水蛭、银杏、川芎的有效成分组成的复方制剂对动物局灶脑缺血的保护作用。

Cotyledon and hypocotyl ' s rate and quamity are the most among these explams , and callus can be obtained in 10 days by cotyledon and hypocotyl . reversely it is difficult to indue callus with root , and the callus from root is lnde and easy to become browning . the calius obtained from leaf grows very slow and does not become browning uniill in 2 or 3 months

银杏的不同器官和组织都能够诱导出愈伤组织来，其中，子叶和胚轴10d左右全部愈伤化，诱导速度和诱导率均最高，根则很难诱导，愈伤组织很少，褐化很快；叶片诱导的愈伤组织，生长慢，褐化也慢，在培养基上保持两三个月而不褐化；胚乳的诱导时间也较长，需要30d左右。

For flavonoides, which consist of more than forty glycosides, quercetin, kaempferol and isohamnetin are the main elements.

银杏叶中主要活性物质有两类：黄酮类化合物及萜内酯化合物。

Meanwhile, the compacted soil in roadside green belt may resulted in the death of such trees as Koelreuteria paniculata,Populus tomentosa, Ginkgo biloba and Pinus tabulaeformis.

同时研究表明，栾树、毛白杨、银杏和油松等行道树的衰弱或死亡还与道路两侧密实的土壤条件有关。

Conclusion］ Some DNA fragments of the homologous genes of laccase were successfully cloned.

结论］成功克隆了银杏漆酶同源基因的部分序列。

Newly built road south expired green, green area 20 hectares, planted by Chinese pine, lacebark pine, gingko trees and other trees I 2900, the city grassland Begonia, cloves, and other shrubs 5800 I plants as among the Temple of Heaven, beautiful scenery and Xiannongtan.

新建成的南中轴路绿地，绿化面积20余公顷，栽植了油松、白皮松、银杏等乔木2900余株，栽植西府海棠、丁香等灌木5800余株，成为天坛和先农坛间的一道美丽风景。

METHODS: The middle cerebral artery occlusion model described by Zea longa was used.

采用改良Longa法复制大鼠局灶脑缺血再灌注模型。56只实验大鼠随机分为正常对照组、假手术组、缺血再灌注组及银杏叶制剂预处理组。

These primer combinations produced a total of 1 119 bands, 229 specific loci (including 54 absent bands, and 175 monomorphic bands). Among them, 983 polymorphic bands, accounting for 88%, were detected. The percentage of identification per primer combination was as high as 100%. The average PPB of 14 foreign cultivars was 35.86% and the average PPB of seven domestic cultivars was 31.51%.

结果表明：8对引物共产生1 117条谱带， 229个特异位点（其中缺失带54条、单态带175条），多态带983条，多态带的比例为88%；每对引物鉴别效率为100%。14个国外银杏观赏品种平均多态带的比例35.86%，7个国内品种平均多态带的比例31.51%。21个观赏品种之间相似系数为0.4899～0.8499。

Ginkgo and cycads are the only two lineages bearing multiflagellated spermatozoids in all extant seed plants.

银杏和苏铁类植物是现存种子植物中仅有的2个具多鞭毛游动精子的类群。

The results were summarized as follows:① The length and dried weight of shoot and the differentiation of leaves were enhanced on a culture medium with α-Naphthaleneacetic acid, and the effectiveness of NAA became stronger with the incerase in concentration within a range of 0.001 mg/L to 0.1 mg/L.

结果表明：①萘乙酸促进银杏茎尖伸长生长和叶片分化，随NAA浓度增加其作用增强，在NAA为0.1 mg/L时茎尖长度为对照的1.47倍，分化叶数为对照的2.62倍，茎尖干重为对照的6.45倍。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。