精核

结果精子中存在精核蛋白基因的mRNA；

Results There was expression of protamine mRNA gene in spermatozoon .

精核染色质在卵核内分散延续的时间长达4h左右。

The dispersing of sperm chromatin in egg nucleus takes about 4 hours ;

而在雌核发育银鲫卵中，Ca2＋的功能和二硫键的还原作用与精核发育受到抑制之间并无直接联系。

But in ooplasm of gynogenetic crucian carp the Ca2 + and disulfide bond reduction was not directly related to the inhibition of sperm nuclear development .

3授粉后2～3h，精核分别贴附于卵细胞与极核核膜上；

In two to three hours after pollination , two sperm nuclei are nestled on the nuclear membranes of the egg nucleus and a polar nucleus respectively and synchronously .

在果蝇中的研究已经表明hira基因与精核解凝形成雄性原核有关。

The research on Drosophila has indicated hira gene related to sperm nucleus decondensation during fertilization .

小鼠第一极体（PB1）重组卵母细胞去精核孤雌发育研究

Research on Parthenogenetic Development of Mouse Recombinant Oocyte Which Was Removed Sperm Nucleus after Engraft PB1

授粉后18h，精核附在极核或次生核的核膜上。

18 hours after pollination , sperm nucleus adheres to the nuclear membrane of polar nuclei or that of the secondary nucleus ;

另据报道称Hira基因可能对鱼类精核解凝发挥重要作用。

In addition , according to reports on fish sperm , Hira gene may play an important role in the nuclear coacervation solution .

低剂量醋酸棉酚导致的HPRR及精核蛋白的改变是可逆的。

Changes of HPRR and nuclear basic protein were reversible after stopping gossypol treatment .

授粉后18h，精核附在卵核的核膜上。6.授粉后20h，精核进入卵细胞核，精核染色质逐渐松解；

20 hours after pollination , sperm nucleus enters egg nucleus and male chromatin gradually disperses and 24 hours after pollination , male nucleolus appears .

生殖细胞核孚尔根染色反应要比营养核以及后来形成的两个精核的染色深，生殖细胞与营养核PAS反应均为阳性。

The intensity of colour in generative nucleus by using Feulgen reaction was deeper than vegetative nucleus and two sperms forming later . The generative cell and vegetative nucleus gave a positive reaction to PAS stain .

10.授粉后20h，精核进入1个极核或次生核，二者进行融合。

10 . 20 hours after pollination , sperm nucleus enters one of the polar nuclei or the secondary nucleus and the triple fusion takes place .

在对银鲫、果蝇等一些生物的研究中，Hira基因在雌核发育中与精核解凝有关。

Research show that the Hira gene is related to solution of the condensate about sperm nucleus in silver crucian carp , fruit flies and other organisms .

约26h，另一个精子的精核与次生核核膜相贴伏，随后与之融合；

In about 26 hours after pollination , the sperm nucleus of another sperm nestles on the nucleus membranes of the secondary nucleus , and then fuses with it .

试验选用孤雌生殖单倍体诱导率存在差异的不同类型自交系为材料，利用DAPI荧光染色方法对离体萌发花粉管中两个精核之间的距离进行了观察统计。

Based on materials with different potential for haploid inducing , the distance between two sperm nuclei of pollen tubes germinating in vitro was observed and analyzed by dying the nuclei of various maize inbred lines with fluorescent agent DAPI .

结论服用低剂量醋酸棉酚能阻断组蛋白-精核蛋白取代反应（HPRR）及影响精核蛋白含量，这可能是醋酸棉酚导致不育的重要原因；

Conclusions The interruption of histone-to-protamine replacement reaction ( HPRR ) and alteration of nuclear basic proteins induced by low dose gossypol treatment might lead to infertility .

停药10周后，生育力和所导致的组蛋白-精核蛋白取代反应（HPRR）异常现象全部恢复。

The fertility and the inducing abnormal histone-to-protamine replacement reaction as well as alteration of nuclear basic proteins could be recovered 10 weeks after withdrawal of drug treatment .

约34h，精核与卵核融合，并在卵核内出现分散的雄性染色质，进而出现雄性核仁；

In about 34 hours the egg nucleus and sperm nucleus begin fusing . In egg nucleus there is the male chromatin scattered , and then a small male nucleolus appears .

开花后5～10h，精核与卵核融合，雄性核仁出现，合子形成。

5 to 10 hours after flowering , the membrane of one male nuclear and that of the egg nuclear are fusing , and a small male nucleolus appears in the egg nuclear after fusing , as is the symbol of the formation of zygote .

附睾精子核中主要为精核蛋白。

In epididymal sperm , the main basic proteins is protamine .

精核具核前窝和核后窝；

The nucleus has both front and posterior nuclear pockets ;

进入雌性细胞中的两个精核；

Two sperm nuclei within the cytoplasm of female cells ;

非细胞体系中红鲤精核去凝集的影响因子研究

Study on Impact Factors of Common Carp Sperm Nuclei Decondensation in Cell-Free System

精核蛋白完全缺失，占总病历1%。

Complete absence of protamines ( 1 % ) .

精灵口服液对腺嘌呤致大鼠精核蛋白异常的影响

Effect of Jingling Orally Liquid on Protamine Abnormity of Big Rats Induced by Adenine

精核染色质在极核里分散的时间大约需用1小时。

The scatt-ering of the sperm chromatin in the polar nucleus takes about 1 hour .

植物离体受精过程中精核在中央细胞内的迁移及与雌核融合的活体观察

Male nucleus migration and fusion with female nucleus in central cell during in vitro fertilization

授粉后16~18h，精核向卵细胞移动并进入卵细胞。

The sperm nucleus adheres to the nuclear membrane of egg 18 hours after pollination .

大鼠精核蛋白抗血清的制备

Preparation of Antisera Against Rat Protamine

精核蛋白与男性不育研究进展

Research progress in infertility and protamine