开始发育

At zygotene,t he SC formation initiated at multiple sites in each bivalent but the regions nea r telomeres were preferred.SCs were shortened with development of SCs.Initiation of new SC and extension of existing SC occured simultaneously,and pairing in di fferent bivalents of a nucleus was not synchronised.

结果表明，小麦SC以多点式起始方式于偶线期开始形成；随SC的发育，新的SC形成和已有SC片断的延伸并存；此外，在同一核内不同二价体之间，染色体配对和SC形成并不同步；SC成熟于粗线期，而以破碎方式解体，消失于双线期。

Firstly, the SSH was used to isolate tissues or organs specific expression genes in different development stages of plant. These genes provide evidence for explaining the molecular mechanism of plant development. Then SSH was widely used to isolate genes related to resistance under biological or abiological stress in different plants and the molecular mechanism of the resistance was primarily elucidated.

首先， 官中的组织特异性表达的基因，为揭示植物生长发育过程的分子机理提供了有效手段；另外，在不同植物中，该技术被大量应用于分离各种生物及非生物胁迫条件下诱导表达的抗性相关基因，可以揭示植物抗逆的分子 SSH 技术已开始应用于分离与次生代谢产物合成相关的基因。

Wing bud differentiation initiated at the early 5th nymphal instar, during which the front wing bud cells in the macropterous proliferated much more rapidly than those in the brachypterous. The hinder wing buds of the brachypterous degeneratd at middle 5th instar and finally turned out to be very little wings.

在5龄初始时才发生翅芽发育的分化，之后，短翅型若虫的前翅芽细胞增殖速度明显慢于长翅型，到五龄末期，细胞数量积累明显少于长翅型，短翅型的后翅芽在5龄中期开始退化变短，羽化后变成一个退化的小翅。

At time of 5mm length of alabatrum, the miosis in microsporecyte and the sex differentiation was found, thus in female flowers, pollen mother cell showed a abnormal meiose then the pollen cells gradually disintegrated, final, contabescence had taken, and in male flowers, the stamen normally developed.

在幼蕾长到5mm左右，即花粉母细胞开始减数分裂时，出现花性别的分化，雌花中雄蕊花粉母细胞不能进行正常减数分裂，进而花粉细胞逐步解体而导致雄蕊败育；雄花中雄蕊发育正常至性成熟。

Though she was developmentally delayed, she made steady progress in learning about the world and interacting with others.

虽然Ella 开始在认知和反映上面有了平稳的进步，但还是比普通正常的儿童发育迟缓。

High levels of Cre expression was detected in the epithalamus and anterior thalamus of the diencephalons, and superior colliculus and pretectum of the midbrain.

我们进一步观察到Cre重组基因在胚胎发育第10天的脑部开始有表现，并一直持续至出生前，其分布位置与成鼠的脑部一致。

The results indicated that compared with short photoperiod, under long photoperiod, plant height, caudex, leaf and leaf number increased, florescence delayed; The phase from the calyx differentiation stage to gynoecia differentiation stage lasted 3~4 days.

采用10h和16h两种光照条件对紫苏进行处理，观测光周期对紫苏生长发育的影响，结果表明：与短日照条件下的相比，长日照条件下生长的供试材料叶片数增加，叶片增大，茎增粗，植株增高，开花延迟；花芽分化从萼片原基形成开始，到雌蕊形成为止，持续3~4d。

Further study was carried on the cpDNA matK in Hamamelidaceae and its systematic significance (the sequences of matK of some species have been obtained, and the research have been funded by NSFC), and molecular and systematic study were also carried on Magnoliaceae, Rhizophoraceae, Labiatae.

在此基础上，开始了对金缕梅科叶绿体DNA mtK基因及其系统学意义的研究（已测定部分种类的matK基因序列，并获国家自然科学基金国际合作项目的连续资助），同时对木兰科，红树科，唇形科植物类群开展了分子系统发育研究。

Arabidopsis response regulators,ARR4 and ARR5, were induced by the increased cytokinin contents at different time after seed germination. ARR4 responded to cytokinins at early time of seed germination, especially on the 6 d when seedlings were around true leaf initiation, while cytokinins induced ARR5 activation after 6 d of seed cultivation in light conditions, an obvious increase was on the 20 d when seedlings were around inflorescent shoot initiation.

拟南芥植物细胞分裂素反应调节基因ARR4和ARR5在植物发育的不同时期应答植物体内增加的植物细胞分裂素，ARR4的应答反应比ARR5早，种子萌发后的第6天幼苗真叶形成初期，ARR4基因被明显诱导；而ARR5的应答反应在幼苗真叶形成后的几个时间段均能检测到，并且在种子萌发后的第20天，花枝形成开始时特别明显。

The results showed that total length of the leptocephali dramatically decreased during the 1st to the 4th day of experiment in the Stage II.

结果，实验第1天体长开始收缩到实验第4天的体长收缩到最短（全长范围20.60 mm ~21.69 mm）为StageⅡ的发育阶段。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。