子叶的

The faintest color of the bud color is yellow green. In addition, the variation-coefficient of some morphological traits is very low such as the cotyledon length, the cotyledon width, the cotyledon color, the silique length and so on. The Cluster analysis was based on the morphological data. When the genetic distance was 7.61, 21 accessions were clustered into 4 groups. The accessions of the group 1 had white petal, mezzo flower stalk and the earlier pick period, which is divided into two subgroup when the genetic distance was 5. 98. And the model was Ba39 and Ba35. The accessions in the group 2 had the very slender flower stalk and the middle pick period, that model was Ba27. The accessions of the group 3 had yellow petal, the thin flower stalk and the later pick period, that model was Ba43. The main characters of the group 4 were that it had the latest pick period and many leaves.

基于形态性状的聚类分析，在遗传距离7.61处，把21份芥蓝种质划分为4类，其中类群G1包括14份材料，其植株的生长势中等，株型较为一致，花瓣颜色均为白色，花薹粗细较为适中，平口时期较早，在遗传距离5.98处自然形成2个亚类，分别以Ba39和Ba35为代表；类群G2包括2份材料，即Ba27、Ba33，其植株的生长势较弱，花薹很细，平口时期相对居中，代表材料为Ba27；类群G3包括4份材料，即Ba05、Ba09、Ba38、Ba43，其植株的生长势较弱，子叶颜色、叶柄颜色、花茎颜色、花蕾颜色均为黄绿色，花瓣颜色为黄色，花薹较细，平口时期较晚，代表材料为Ba43；类群G4包括1份材料，即Ba41，其植株的生长势较强，平口时期很晚，并且叶片数很多。

Seeds uniseriate, wingless, oblong, flattened; seed coat minutely reticulate, slightly mucilaginous when wetted; cotyledons accumbent.

种子单列，无翼，长方形，扁平；网状的种皮微小的，被弄湿的黏的稍；子叶依着。

Seeds uniseriate or biseriate, winged or margined, oblong or orbicular, flattened; seed coat smooth or minutely reticulate, not mucilaginous when wetted; cotyledons accumbent.

种子单列的或双列，具翅的或边缘，长圆形或圆形，扁平；网状，不黏的种皮平滑的或微小的被弄湿；子叶依着。

Seeds numerous, uniseriate, wingless or margined, oblong or ellipsoid, plump or flattened; seed coat minutely reticulate, mucilaginous or not when wetted; cotyledons accumbent or rarely incumbent.

种子多数，单列，无翅或边缘，长圆形或椭圆形，肥厚的或扁平；当被弄湿时，不的种皮微小的网状，黏的或；子叶依着的或很少现任。

Seeds uniseriate, wingless, oblong, ovoid, or ellipsoid, plump; seed coat smooth, reticulate, rugose, or striate, mucilaginous or not when wetted; cotyledons accumbent or rarely incumbent.

单列的种子，无翅，长圆形，卵球形，或椭圆形，肥厚；平滑，网状的种皮，具皱纹，或不，被弄湿的具条纹，黏或；子叶依着的或很少现任。

Seeds biseriate or rarely uniseriate, wingless or narrowly margined, oblong, plump or slightly flattened; seed coat minutely reticulate, copiously mucilaginous when wetted; cotyledons incumbent or rarely accumbent.

单列的种子双列或很少，无翅或狭边缘，长圆形，肥厚或稍扁平；网状，丰富黏的种皮微小的被弄湿；子叶现任的或很少依着。

When single herbicide was used in the field for two years, the dominant species took place corresponding alternation. The community structure that originally mostly consisted of dicotyledonous weeds , such as Alopecurus aequalis sobol., etc.

通过连续几年的单一除草剂使用，烟田杂草的优势种群发生了相应变化，原来以看麦娘、马唐、稗草等单子叶杂草为主的群落结构演变成了现在以稗草、马唐及胜红蓟、两栖蓼、茴茴蒜为主的单、双子叶杂草混生结构，说明烟田施用除草剂会引起杂草群落结构变化，因此，在生产上则应注意除草剂的轮换使用。

The results showed that Sigma Broad had a good control of Veronica didyma, Avena fatra, Vicia sativa, Galium aparine.and Rorippa indica., more significant in term of fresh weight control and the inhibition rate of weed height despite less weed control in term of plant number,which maintained a certain number of weeds,due to delayed use.

结果表明，阔世玛对小麦田婆婆纳、野燕麦、大巢菜、猪殃殃、野油菜等单双子叶杂草有较好的防除效果，春季晚用，对杂草的密度防效不佳，小麦田间保留了一定数量的杂草，但对杂草的鲜重防效、株高抑制率显著。

Seeds uniseriate or rarely biseriate, wingless, globose or rarely oblong, plump or rarely slightly flattened; seed coat reticulate, mucilaginous or not when wetted; cotyledons conduplicate.

双列的单列的种子或很少，无翅，或很少长圆形，肥厚或很少稍扁平；当被弄湿时，不的种皮网状，黏的或；子叶对折。

Partial sequences of chalcone synthase gene exon 2 were amplified by PCR method from genomic DNA of 10 species of the basal eudicots. After cloning and sequencing, 26 seqences were obtained.

用PCR方法从目前极少被报道的真双子叶基部类群10种植物的总DNA中扩增出CHS基因外显子2的部分序列进行分析，经克隆后测序，共得到26个不同的片段。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。