萌发

Objective: To determine optimum culture conditions for the seed embryo culture and rapid propagation of Dendrobium candidum .

中文摘要：目的：研究铁皮石斛种胚萌发和快速繁殖的组织培养技术，为铁皮石斛的繁殖建立最佳培养条件。

Lagenarium was higher 60%(for example, Glycyrrhiza yralensis, Lycium barberum and Desmodium styracifolium) as the concentration 0.01g/ml. Especially, the G. yralensis showed the strongest inhibitory effect on it with inhibitory rate of 99.6%. The inhibitory rate of 12 PE against mycelium growth and 15 PE against appressorium formation of C.

供试提取物在质量浓度为0.01 g/ml条件下，甘草、枸杞、金钱草等11种植物的80%乙醇提取物对黄瓜炭疽病菌分生孢子萌发的抑制率大于60%，其中甘草的抑制作用最强，达99.6%；12种提取物对黄瓜炭疽病菌菌丝生长的抑制率大于50%；15种提取物对黄瓜炭疽病菌附着胞形成抑制率达50%。

It is at this stage that crowding can first appear as a result of the greater size of the permanent incisor teeth, mediated by relative tooth and diastema size, increase in intercanine distance through normal growth, and the extent of the inclination of the incisor teeth.

当牙萌发时因为尺寸较大而会出现初期的拥挤现象时，此阶段可由下列几种情况来解决：乳牙与间隙的尺寸、常生长下的犬齿间距增加、牙倾斜的程度。

In the present study,dissectional examination of four field-grown varieties with differentbolting and bulbing characteristics showed that differentiation of stalk primordia was prior toaxillary bud germination.

我们对4个具有不同蒜薹和鳞茎生长发育特性的大蒜地方品种在大田条件下生长的植株进行解剖观察结果表明，大蒜腋芽萌发都发生在薹原基分化后。

And Echinochloa crusgalli L. were studied. The result showed that both of the aqueous extract from aerial part and root of T. repens inhibited the germination rate of weed seeds, root activity and respiratory rate , the activities of superoxide dismutase peroxidase and catalase of germinating seeds, enhanced the activity of peroxidase and the content of malondialdehyde.

结果表明，白三叶草地上部分水浸液和根系分泌物显著抑制苘麻和稗草种子的发芽率，降低了杂草种子萌发过程中超氧化物歧化酶、过氧化氢酶的活性，抑制了杂草种子根系活力，显著提高了杂草种子过氧化物酶活性和丙二醛的含量。

Aqueous extract of cotton has allelopathic effect on Raphanus sativus, Brassica campestris, Lactuca indica, Brassica campestris, Echinochloa crusgall, Setaria viridis and Abutilon theophrasti and its inhibition effect gradually strengthens with increasing concentration. Aqueous extracts from stems, leaves and roots of cotton inhibit or accelerate seed germination and seedling growth, and activity of enzyme of seedling root of cotton. While aqueous extracts from stems and leaves of cotton are 0.02 gmL^(-1), root length, shoot length, lateral root number and dry weight of cotton respectively increase by 10.3%, 3.1%, 22.9% and 2.4% over the control. The above mentioned indexes are lower than the control by 34.4%, 39.2%, 40.6% and 19.0% respectively as the aqueous extracts are 0.1 gmL^(-1). At the same time, root activity and SOD activity decrease by 38.2% and 36.7%, while POD activity and MDA content increase by 52.3% and 36.5%. Growth indexes of plant receptors increase at low concentrations but decrease at high concentrations of aqueous extracts. The allelopathic effect of aqueous extract of stems and leaves is stronger than that of root.

结果表明：棉花植株水浸提液对萝卜、白菜、莴苣、油菜、稗草、狗尾草、苘麻均具有化感效应，随着作用浓度增加，抑制效应逐渐加强；棉花茎叶和根系水浸提液对棉花种子萌发、幼苗生长、幼苗根系活力、根系酶活性有抑制或促进作用，当茎叶浸提液浓度为0.02 gmL^(-1)时，棉花根长、苗高、侧根数、干重分别比对照增加10.3%、3.1%、22.9%和2.4%，当浓度为0.1 gmL^(-1)时，上述指标与对照相比分别降低34.4%、39.2%、40.6%和19.0%，而根系活力、SOD活性比对照降低38.2%、36.7%，POD活性、MDA含量较对照增加52.3%和36.5%，不同浓度棉花植株水浸提液对棉花生长呈现&低促高抑&的规律，且茎叶浸提液作用效应大于根系浸提液。

Result:The pollen is morphologically oblate, suboblate, spheroidal and prolate. The external sculpture is commonly reticulate, striate and echinulate.

结果：其花粉多为扁球形、近球形、三角形、四角形等；萌发孔为三孔沟、三沟、散沟等；外壁纹饰多为网状纹饰、条状纹饰、刺状纹饰。

Haploid spores are mostly, but there are a small number of diploid , such as the brown algae and some species of Ectocarpus are still on the sporophyte produces diploid mitosis after the swimming spores, which germinate directly to produce sporophytes.

孢子大多为单倍体，但也有少数为二倍体，如褐藻中的水云等一些种类还在孢子体上经过有丝分裂产生二倍体的游动孢子，它直接萌发产生孢子体。

The effect of NaCl4 and Na/SD4 stress treatment on Elaeagnus angustifolia L.seed germination and seedlings physiological characteristics was studied.

采用NaCl和NaESO4溶液进行渗透胁迫，研究新疆大果沙枣种子萌发和幼苗叶片部分生理指标的变化。

Elymus dahuricus Turcz seeds were separately treated with different concentrations of NaCl and Na2CO3 for 7 days to observe the germination.

以肥披碱草种子为材料，分别用NaCl和Na2CO3溶液进行胁迫处理7d，研究其萌发情况。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷