形态属

Seedlings in these 11 nurseries. This study primaryly confirmed symbiotic fungi with Pinus Tabulaeformis Carr. belonging to 3 genus of basidiomycete based on the morphological and anotamical characteristics, they were Suillus Mich.ex Gray, Russula Gray and Tomentella Pat.; Suillus Mich.ex Gray was the predominated fugus of Pinus Tabulaeformis Carr.

本研究根据外生菌根形态和解剖结构特征，初步确定与本次调查油松形成外生菌根的菌根真菌为担子菌，分属3个属，他们分别是乳牛肝菌属(Suillus Mich.ex Gray)、红菇属和毛革菌属Tomentella Pat。

The results of character evolution history reconstruction shows the SC in PT and AD clade might be a homoplasy character; also, the SC in PT clade might have multiple origins. SC in Pteridaceae has some special characteristics:(1) the cell long axes usually run parallel to the lateral veins;(2) Most of Pteris and Adianum species have VSC only in lower epidermis;(3) Species have ISC also have VSC.(4) Presence of spicular cells is highly correlated with the long veinal epidermal cells. Species have type III silica deposition type usually have longer and narrower veinal epidermal cell compared with ordinary epidermal cells; Species have type IV silica deposition type also have long epidermal cells, but not significantly different from ordinary epidermal cells.

本实验中亦发现凤尾蕨科之矽异形细胞具有几项特色：(1)矽异形细胞之长轴多与叶片侧脉方向平行(2)发现多数铁线蕨属以及凤尾蕨属植物仅下表皮具有脉上矽异形细胞；(3)具有脉间矽异形细胞的种类会同时具有脉上矽异形细胞；(4)长条形的侧脉上表皮细胞与矽异形细胞具有相关性，仅具脉上矽异形细胞的分类群之脉上表皮细胞均较一般表皮细胞细长；具有脉间矽异形细胞之物种之脉上表皮细胞亦为长条形但形态与一般表皮细胞常无明显形态差异。

Following the results researched. 1. There are some differences in morphology of six species. But they are easy to be impacted by environment and have more variability. Sometimes it is difficult to use these characteristics to identify Impatiens L. that have numerous species.

结果表明： 1.6 种凤仙花属植物在形态上具有一定的区别，但由于这些形态特征易受环境的影响而存在着较大的可塑性，因而用这些特征区分种类繁多的风仙花属植物时有时是困难的。

Considering other differences that in leaves of Podocarpus there are three resin ducts under vascular bundle of midrib, mesophyll cells are differentiated into palisade tissue and sponge tissue; in leaves of Nageia, there is only one resin duct under vascular bundle in each vein and no obvious differentiation in mesophyll cells, palisade tissue can be found on both sides, and sclereids can also be found in mesophyll tissue.

结合罗汉松属植物主脉维管束下面有3个树脂道，叶肉分化为栅栏组织和海绵组织，而竹柏属植物每个叶脉维管束下面有1个树脂道，叶肉分化不明显，两面都有栅栏组织，叶肉中还具有大量石细胞等特征，认为罗汉松属和竹柏属在叶脉、叶形态和结构方面存在明显差异，2个属分开是比较合理的。

Investigation and comparison of pollen grains have been made for four genera of Compositae from Tibet and Barrow, Arctic, namely Artemisia L., Erigeron L., Saussurea DC., and Senecio L..

对西藏和北极巴罗地区菊科4个属（蒿属、飞蓬属、风毛菊属和千里光属）17个种的花粉形态进行了光学和扫描电子显微镜的观察、比较。

As a result, some valuable taxonomicmethods, criteria and our viewpoints were concluded. The morphology ofthe sporus is the main identical base at species level, which include thecharacters of the shape, size, colour, septate and ornament of the wall etc,and some sporus with distinct variable are also useful at genus level.

孢子的特征(包括形状、大小、颜色、隔膜数和表面纹饰等)是种级分类的主要依据，一些形态差异较大的孢子可作为属的划分标准；其次，分生孢子梗的形态特征、产孢细胞的延伸方式及产孢方式也是主要的鉴别依据，对属级水平上该真菌的鉴别有重要意义；另外，培养特征及产孢表型可作为分类鉴定的必要、有益补充。

Based on the features of morphology, anatomy, cytology, pollinating insects, embryogenesis and chemistry of representing species,the authors considered that in this family Chimonanthus may be the most advanced, Calycanthus the more primitive, and Sinocalycanthus the intermediate.

根据蜡梅科代表种的解剖学、花粉形态、传粉昆虫、胚胎发育、细胞学及化学成分的研究，作者认为蜡梅科中蜡梅属是本科最进化的属，美国蜡梅属是最原始的属，夏蜡梅则介于二属之间。

Ligusticum has great diversification in northwestern Yunnan of China, so this region is probably the most diversified center for it.

在滇西北地区，藁本属不仅植物种类丰富，而且集中了叶柄解剖的全部类型，形态分化十分活跃，在核形态上也表现出一些变异，可能是这个属的最大变异中心。

Evidence from seed-coat micromorphological features supports placement of Ripogonum outside Smilacaceae and inclusion of Heterosmilax in Smilax, which are also consistent with palynological and molecular evidence. Within Smilax, seed-coat micromorphological features suggest close relationships between most of the species of sect.

种皮形态分析结果支持将Ripogonum属从菝葜科中分离、独立成科，支持将肖菝葜属与菝葜属合并的观点，这与孢粉学和分子证据的分析结果一致；推测肖菝葜属和菝葜属的土茯苓组sect。

After pathogenic fungi identified,we found 26 of them can cause cotton leaf spot. The 26 pathogenetic strains were carried out morphological and molecular identification of the firm. The initial identification of the pathogens is through the morphological observation such as the determination of growth, colony morphology, conidia and conidial stalk.

通过对生长量的测定，菌落形态，分生孢子和分生孢子梗等形态学观察进行形态学鉴定；通过PCR扩增真菌核糖体基因转录间隔区序列并测序，并将序列在GenBank上进行同源性比对和构建系统系统发育树等方法进行分子鉴定，鉴定出这26株真菌分属链格孢属、镰孢属、黑孢属、刺盘孢属、匍柄霉属等5个属。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。