不育

The CMS line 681 A, the restorer 714 and FI populations of 681 AX 714 consisting of 110 plants were used for molecular mapping of the restorer gene by bulk segregant analysis.

以甘蓝型油菜CMS系681A、恢复系714及其组合681A×714 F_2群体110株为材料，利用群分法进行细胞质雄性不育恢复基因定位。

Chromosome pairing behavior in meiosis of the hybrid F1 was carried out. Results showed that in an average , 1.25 rod bivalents were observed in one PMC, meiotic configuration was 2n=14=11.49Ⅰ+1.25Ⅱ(Xta=1.25) and most of PMCs possessed 1～5 bivalens, indicating that the relatively high homeology was detected between the D genome of Ae.tauschii and the V genome of D.villosum. The morphological differences between F1 hybrids and their parents were significant. F1 plants were highly self-sterile, but partially self-fertile after treated by chromosome doubling technique.

对杂种F1花粉母细胞减数分裂中期Ⅰ染色体配对行为进行观察发现，"节节麦×簇毛麦"杂种F1平均每PMC有1.25个棒状二价体，染色体的平均构型为2n=14=11.49Ⅰ+1.25Ⅱ(Xta=1.25)，大部分被观察的细胞出现1～5个二价体，表明节节麦D染色体与簇毛麦V染色体间具有相对较高的部分同源配对， D和V染色体之间存在一定的部分同源性。F1植株高度自交不育，经染色体加倍处理后能够自交结实。

A cytoplasmic male sterile line GDS in Maize and its maintainer BG were selected from segregation of self-pollination.

通过杂种后代的自交分离，选育成新的细胞质雄性不育系GDS及其相应保持系BG。

Objective To analyse different pathology of seminiferous tubule and sex hormone levels in order todiscuss whether they can provide reference for acquiring sperm or spermatogenic cell.

目的 分析唯支持细胞综合征不育患者曲细精管的不同病理改变及其血清性激素水平，探讨是否可以为睾丸活检取精子或生精细胞提供参考。

The conventional methods were applied in preparing chromosomes from marrow cell and sex cell.

旨在从显微和亚显微水平为棉酚导致的不育机理提供依据。

Here we show that a newly evolved sex chromosome contains genes that contribute to speciation in threespine stickleback fish.

基因定位研究显示，新形成的X染色体包含雄性求偶行为基因，而先祖X染色体既包含行为隔离基因，又包含杂交种雄性不育基因。

Meta analysis shows, only sex of 3 heredity much condition and male not Yo is remarkable and relevant, namely AZFc division share is short of break, androgen accepts put oneself in another's position genen length and methylene 4 hydrogen folic acid is reductive enzymatic gene much condition.

Meta分析显示，仅有3个遗传多态性和男性不育显著相关，即AZFc区部分缺失、雄激素受体基因n长度和亚甲基四氢叶酸还原酶基因多态性。

Malfunction will result in cystic fibrosis, chronic pancreatitis, male sterility, habitual constipation, keratoconjunctivitis sicca (KCS, also called dry eye syndrome). Over activation of CFTR is related to diarrhea, polycystic kidney disease.

该通道活动的异常与多种疾病的病理发生相关：CFTR氯离子通道功能丧失或活性降低可导致慢性胰腺炎、多囊肾病、男性不育、习惯性便秘和干眼病等；而功能的过度激活则可导致分泌性腹泻、多囊肾病等。

The increase process of dry weight per unit volume,ratio between seed and silique shell and 1000 grain weight of yellow and black seeds of recessive GMS in B.napus L. were from slow to quick and then returned to slow, the same genetic back ground of tallied with the logistic equation. The ripening characteristics of materials tested showed no marked difference.

王华具有相同遗传背景的油菜黄籽与黑籽隐性核不育材料在成熟过程中单位体积干重、籽壳比、千粒重的增长呈现由慢到快再到慢的过程，符合Logistic方程，各材料成熟特性无显著差异。

Uu infection may reduce the sperm membrane integrity and sperm nucleus DNA maturity.

Uu感染能够降低精子膜的完整性以及精子核DNA的完整性，这可能是Uu致男性不育的又一因素。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。