减数分裂期

杂交稻高产群体干物质的积累动态呈Logistic生长曲线，积累半量期在减数分裂期，以中期积累最多，后期次之，前期较少。

Dry matter accumulation pattern of high yielding hybrid rice colony appeared as Logistic curve with the higheSt accumulation speed at meiosis stage .

在花粉母细胞形成期一减数分裂期与颖花AP的活性及同工酶组成的变化关系较密切。

Its abortion was also closely related with the change of AP activity and isoenzyme components in the spikelet at pollen mother cell formation-reduction division stage .

因此花粉母细胞形成至减数分裂期是隐性长穗颈eui基因表达对温度敏感时期，该基因感温表达具有积温效应，6天的感温效果最佳。

The analysis showed that eui gene expressed best in feasible temperature for 6 days during the thermo-sensitive period .

DNA倍体分析显示明显DNA倍体组成改变，合成期和四倍体细胞消失，仅有单倍体、二倍体和减数分裂期细胞，α+6Thy1+CKIT-细胞群中，二倍体细胞数提高至该细胞群的51.2%。

The DNA Ploidy analysis showed significant changes of these two cell subpopulations in DNA Ploidy . The percentage of diploid cells in α + 6 Thy 1 + c kit - cell subpopulation significantly increased to 51.2 % and synthesis phase and tetraploid cells disappeared .

在花药败育高峰期（花粉母细胞减数分裂期），与CMS相关的线粒体基因在不育系花药中的表达量要显著低于保持系。

At the peak of anther abortion ( Pollen mother cell meiosis stage ), the expression level of CMS-associated mitochondrial gene in sterile anther was significantly lower than that in maintainer anther . 3 .

用适当浓度的植物生长抑制物质（MET、MH）处理（减数分裂期喷洒植株、低温预处理过程中浸泡花序和加入培养基中），均有利于促进胚状体的产生，提高诱导频率。

Using plant growth inhibition substance ( MET , MH ) with a propriety concentration treating donor plants in different time ( spraying plants in meiosis , dipping anthotaxy in low temperature treatment and adding them into medium ), it is helpful to increase the inductive frequencies of embryoid .

萍乡显性核不育水稻育性转换温度敏感期在花粉母细胞形成期至减数分裂期，即抽穗前18～12d；

The thermo sensitive phase fertility alteration in Pingxiang Dominant Genic Male Sterile Rice occurred from pollen mother cell formation to meiotic phase , i.e. 18-12 days before heading .

重组过程通过形成交叉对减数分裂期同源染色体的正确分离起到至关重要的作用。

Recombination plays a crucial role in disjunction of the homologous chromosomes through generating chiasma .

交换特征：由减数分裂期内同源染色体之间的遗传物质的交换而产生的特征。

Genetics : a characteristic resulting from the exchange of genetic material between homologous chromosomes during meiosis .

不育系A4在减数分裂期即表现出异常，绒毡层异常肥大；

The tapetal cells of CMS line A4 enlarged abnormally at meiotic phase , pressing microsporocyte seriously .

对第二减数分裂期的卵子染色体构成进行了分析，异数体卵子的出现率在各种培养基中无明显差异。

By analyzing the chromosome constitute of meiosis stage , the incidences of aneuploidy was no significant difference in the various medium .

水稻幼穗减数分裂期蛋白质组初步分析2.三种染色方法的蛋白质点内部序列微量测定

The Preliminary Analysis of the Proteomic Map of the Rice Spikelet 2.The Microsequencing of the Protein Internal Sequence Using Three Staining Method

在水稻花粉母细胞减数分裂期，施用1.0～2.0%浓度的乙烯利可以诱导小穗与花粉高度不育。

Ethrel , at concentrations of 1.0-2.0 % ( W / V ), caused maximum sterility of the spikelet and pollen of the rice when it was applied in meiotic stage .

结果表明：（1）在小孢子母细胞减数分裂期，不同育性花药之间游离脯氨酸的含量无明显差异，且含量较低。

The following results were obtained : 1.There was no significant difference between the content of free proline in an - thers of male-sterile and fertile plants at reduction division of microspore mother cells .

在花粉母细胞减数分裂期至成熟花粉期喷药处理，花药的绒毡层及花粉均出现异常，不育花粉率可达17%～80%。

From pollen mother cell meiotic division stage to pollen stage , the tapetum of anther and pollen all showed abnormal phenomenon , which sterility pollen rate was about 17 % ~ 80 % .

并且以复合因素处理比单因素处理好；植株花粉母细胞减数分裂期处理比干种子处理的好。

And the treatment with combined factors was better than that with a single factor , and the treatment during the meiosis of pollen mother cells of plant was better than the treatment of dry seeds .

幼穗分化始期至减数分裂期对水分极为敏感，此期保水具有增高、长穗、增粒、提高结实率和千粒重的作用。

Moisture content had the most sensitive to young ear split apart elementary period , at this period it can increase plant height , spike length , number of grains , ripening rate and thousand kerner weight .

施用分蘖肥或改善土壤通透性，能显著增加谷壳的长度和宽度，过多施用穗肥或减数分裂期光照不良、水分供应不足均使谷壳长度变短、宽度变窄。

Comparison with no treatment ( CK ), employing tiller promoting fertilizer or sand-adding treatment would redound to hull length and width , while employing excessive spike fertilizer or shading and water stress treatments during hull formation stage would result in obvious decrement of hull length and width .

到谷穗抽出3/5时进入减数分裂盛期，穗中上部小穗花有50%～80%处于减数分裂前期Ⅰ各期；

When the ear sprouts out 3 / 5 , the meiosis is at prosperous stage and 50 % ~ 80 % cells of the upper-middle ear revealed at the various stages of prophase ⅰ .

小鼠富集着丝粒DNA在小鼠减数分裂粗线期染色体上的原位杂交奥陶系富集Au；

FLOURESCENT IN SITU HYBRIDIZATION OF ENRICHED SFA-DNA ON PACHYTENE CHROMOSOMES IN MOUSE enrichment of Au during the Ordovician period ;

著者等首次采用ASG法对家蚕卵母细胞减数分裂粗线期染色体进行G带分染，在染色体上显示出暗带明带共658条丰富的带纹，并绘制了G带组型模式图。

The studies first used the ASG Method to obtain the G & band chromosomes at meiotic pachytene in oocyte , and the G-band Pattern was drawn .

采用CPD（PI和DAPI组合）染色对番茄减数分裂粗线期和有丝分裂中期染色体进行了显带分析，随后用两种不同的45Srdna克隆在相同的分裂相进行了荧光原位杂交定位分析。

In this study , we performed sequentially combined PI and DAPI ( CPD ) staining and FISH with two different 45S rDNA clones on meiotic pachytene and mitotic metaphase chromosomes in tomato .

雄株的性染色体在减数分裂终变期时，形成Y1XY2的链状三价体，中期Ⅰ时形成v字形或环状，偶有形成XY二价体和一个Y单价体。

The sex-chromosomes of male plant exhibit a chain of trivalent ( Y_1-X-Y_2 ) in diakinesis of PMC meiosis . At metaphase I , they make a V-shaped or a ring configuration . Some of them may form a XY-bivalent and a Y - univalent .

在减数分裂粗线期采用02%的秋水仙碱溶液持续处理24h，或采用01%的秋水仙碱溶液处理36h，获得的平均2n花粉比率最高，分别为276%和232%，其中最高处理可达495%。

The highest average percentage of unreduced pollen by treating male buds for 24 hours with 0.2 % colchicine or 36 hours with 0.1 % colchicine can be obtained , which is 27.6 % and 23.2 % , and the highest proportion is 49.5 % .

（逐渐）减少，缩小收缩的小孢子母细胞中核进入减数分裂终变期。

The nucleus in shrinking cytoplasm of microspore mother cell enters into diakinesis stage.16 .

结果表明：杜仲小孢子母细胞减数分裂粗线期为花粉染色体加倍的最佳处理时期，而秋水仙碱的有效处理浓度为01%～02%，有效处理时间为24～36h。

The results indicate : The best period of doubling pollen chromosome of Eucommia ulmoides is the pachytene of meiosis ; the most effective concentration of colchicine is 0.1 % 0.2 % and the optimal duration is 24 36 h.

哺乳动物卵母细胞阻滞在第一次减数分裂前期的双线期。

In mammals , oocytes are arrested at the diplotene stage of the first meiotic prophase .

哺乳动物卵巢中的卵母细胞的发育停滞在第一次减数分裂前期的双线期。

Fully-grown mammalian oocytes are arrested at the prophase of the first meiotic division within the ovarian follicles .

65日龄出现初级卵母细胞团，有的初级卵母细胞处于减数分裂的核网期。

Primary oocyte clusters appeared on the 65th day , some of which were at meiotic dictyotic stage .

发现这三种植物在第一次减数分裂的终变期中都出现染色体的次级配对现象，中期都出现多极分裂现象；

And that the secondary pairing of chromosomes during diakinesis and the multipolar division beginning from metaphase I were evident .