花旗松

美国花旗松组织培养及再生系统建立的研究

Study on the Technique of Tissue Culture and Regeneration of Douglas-fir

人工林花旗松建筑材加速干燥工艺研究

Accelerating drying of plantation Douglas-fir timber for structural use

我们在一片花旗松森林中的所有树和所有真菌中，提取了它们的DNA短序列，并且制作了这份遗传图。

We made this map by examining the short sequences of DNA of every tree and every fungal individual in a patch of Douglas fir forest .

美国花旗松离体胚愈伤组织诱导与茎芽分化的研究

Formation of Callus Tissue and Adventitious Buds from Embryos of Douglas-fir

它并没有连接到纸皮桦与花旗松互连的网络中。

It was not connected into the web interlinking birch and fir .

纸皮桦和花旗松到底是怎么交流的呢？

How were paper birch and Douglas fir communicating ?

我走向一棵花旗松，扯下树上那个袋子。

I went over to the fir tree . I pulled off its bag .

花旗松素和落新妇苷体外转运和大鼠体内药物代谢动力学研究

Studies on the Transport of Taxifolin and Astilbin in Vitro and Pharmacokinetics in Rats

然后是花旗松，我往他们的袋子中注射了含有稳定性同位素碳13的二氧化碳。

And then for fir , I injected the stable isotope carbon-13 carbon dioxide gas .

这是因为当纸皮桦树叶掉光了的时候花旗松还在不停的生长。

and this was because the fir was still growing while the birch was leafless .

在这张图片上，圆圈，也就是那些节点代表花旗松，

In this picture , the circles represent the Douglas fir , or the nodes ,

因此，进行美国花旗松离体培养和植株再生研究在理论和实践上均有重要意义。

So the study of Douglas-fir in vitro and regeneration is important in theory and practise .

选择针叶材花旗松和阔叶材山毛榉作为实验材料；

Douglas fir of coniferous tree and beech of broadleaf tree is selected as the experiment materials .

然后花旗松回应它：“啊对了，你能给我点你的碳吗？

And fir was saying , " Yeah , can you send me some of your carbon ?

那时我种了三种树，一共80棵：有纸皮桦、花旗松和西部红杉。

I grew 80 replicates of three species : paper birch , Douglas fir , and western red cedar .

碳13和碳14的流向告诉我，纸皮桦和花旗松之间的交流是双向的。

The C-13 and C-14 was showing me that paper birch and Douglas fir were in a lively two-way conversation .

我认为纸皮桦和花旗松在地下的网络中应该是能交流的，但是西部红杉应该是不行的。

I figured the birch and the fir would be connected in a belowground web , but not the cedar .

不仅如此，菌丝跟森林中其它的个体也都有联系，这种联系不仅仅在单一的种类中存在，在不同种类之间也存在，比如纸皮桦和花旗松，而且它的工作原理就像是互联网一样。

And not only that , that mycelium connects different individuals in the forest , and it works kind of like the Internet .

纸皮桦给花旗松送的碳比花旗松反送给它的要多，特别是当花旗松见不到阳光的时候。

that birch was sending more carbon to fir than fir was sending back to birch , especially when the fir was shaded .

试材包括美桧、侧柏、铁杉、花旗松、美洲白橡（栎木）、枫木及越南桧木等七种使用量日增之进口材。

The wood species included yellow cedar , red cedar , western hemlock , douglas fir , white oak , maple and Fokien cypress .

这就是纸皮桦对花旗松说话的声音，纸皮桦说：“嘿，我能帮你点什么？”

It was the sound of birch talking to fir , and birch was saying , " Hey , can I help you ? "

这种联系不仅仅在单一的种类中存在，在不同种类之间也存在，比如纸皮桦和花旗松，而且它的工作原理就像是互联网一样。

individuals not only of the same species but between species , like birch and fir , and it works kind of like the Internet .

以美国花旗松成熟胚为外植体进行离体培养诱导不定芽。

The mature embryos of Douglas-fir were used as explants to induce adventitious buds on MS , N6 , SH , GD , WPM , DCR media .

其主要研究结果如下：（1）以美国花旗松成熟合子胚为外植体进行愈伤组织的诱导时，基本培养基对其有一定的影响。

The results were as following : ( 1 ) When callus development was initiated with the mature embryo of Douglas-fir , the basal medium had some influence .

实验时，将美国花旗松锯屑及树皮密闭在模拟货舱内并定期采气进行较严格的分析。

In the experiment , the sawdust and bark of Oregon pine were enclosed in the simulated chamber and the gases in the chamber were sampled and analysed .

结果表明：乙酸乙酯部分（有效部位）体外抑瘤效果比较好；2个对照品效果显著；并首次对对照品花旗松素抗肿瘤作用机理进行了研究。

The result is that the acetic ether part ( the effective part ), especially the two index compositions , is better in vitro cancer-restraining . Also the anti-neoplastic mechanism of them two has been studied firstly .

结果还表明在每年的这个时间，在夏天的时候，纸皮桦给花旗松送的碳比花旗松反送给它的要多，特别是当花旗松见不到阳光的时候。

It turns out at that time of the year , in the summer , that birch was sending more carbon to fir than fir was sending back to birch , especially when the fir was shaded .

而在随后的实验中，我们发现了相反的情况，花旗松给纸皮桦送的碳比纸皮桦给它的碳多，这是因为当纸皮桦树叶掉光了的时候花旗松还在不停的生长。

And then in later experiments , we found the opposite , that fir was sending more carbon to birch than birch was sending to fir , and this was because the fir was still growing while the birch was leafless .

为了增加花旗松木质纤维和槿麻芯部和韧皮非木质纤维对铜离子的吸附能力，本文提出采用硝酸对这些纤维进行化学改性，使吸附铜离子能力分别增加510%，110%和40%。

Douglas fir ( Pseudotsuga menziesii ) fiber , kenaf ( Hibiscus cannabinus ) core and kenaf bast fiber were che ￣ mically modified with nitric acid to enhance its adsorption capacity which was increased by 510 % , 110 % and 40 % , respectively .