不育的

It is concluded that there are three reasons resulted in male-sterility by floral organs abormality as follows :(1) The stomium enlongates faster;(2) Anther filaments do not elongate sufficiently to position the locules above the stigma at anthesis;(3) The anther locules do not dehisce at the time of flower opening (although limited dehiscence occurs later).

用石蜡切片技术，在光学显微镜下观察拟南芥部分雄性不育材料小孢子发育过程和各时期的花形态特征，分析雄性不育的原因。从花表型上分析导致雄性不育的原因有三个方面：（1）柱头伸长过快；（2）花药生长过慢；（3）花药开裂晚。

The level of tPA before and after treatment was not significantly different .Me made the conclusion that tPA had no effect on sperm\' growth , migration and maturation .However we found that the level of uPA in seminal plasma of health adult and patient had statistics difference(P.01). The health adult\'s level of uPA in seminal plasm was higher than patient\'. The level of uPA was improved after treatment and has statistics difference(P 0.01). The incrementation of upa had linear correlation with incrementation of sperm motility of

根据实验研究结果，再结合上述的病机假说，我们认为本实验证明了少、弱精性不育患者精浆中出现了"精瘀"的中医微观证，"精瘀"为其主要的病理变化；在病机演化中，肾虚是不育疾病之本，血瘀是肾虚的继发病理产物，血瘀日久会导致肾虚；并对肾虚-血瘀-不育三者关系作了理论探讨，对聚精汤的(来源：A5a2a2aBC论文网www.abclunwen.com)组成药物进行了本草析微、方义剖析，得出补肾活血法治疗此疾病不但有理论基础，也有实验依据，补肾活血法是治疗这类疾病的有效法则；还提出可以把uPA看作"精瘀"的实验指标，这对男性不育的病因分析、疗效观察、预后判断有一定的来源：A7676BC论文网www.abclunwen.com

Morphological and cytological observations showed that the pol CMS plants in DGCMS-Yi-3A were complete male sterile, had no pollen sac differentiation and had smaller petals and stamens at higher temperature situation. They were partial sterile, had 1～3 pollen sacs in each anther and had relative bigger petals and stamens at lower temperature situation.

花器形态和花药发育的解剖学观察结果表明，DGCMS-宜3A中表现波里马细胞质雄性不育的植株，其花器形态和花药发育的解剖学特点与pol CMS相同，即在高温条件下，花瓣较小，表现彻底不育，无花粉囊的分化，在低温条件下，花瓣变大，表现部分雄性不育，可分化出1～4个花粉囊，并产生一定数量可育花粉。

Morphological and cytological observations showed that the pol CMS plants in DGCMS Yi 3A were complete male sterile, had no pollen sac differentiation and had smaller petals and stamens at higher temperature situation.

花器形态和花药发育的解剖学观察结果表明，DGCMS-宜 3A中表现波里马细胞质雄性不育的植株，其花器形态和花药发育的解剖学特点与 pol CMS相同，即在高温条件下，花瓣较小，表现彻底不育，无花粉囊的分化；在低温条件下，花瓣变大，表现部分雄性不育，可分化出 1～ 4个花粉囊，并产生一定数量可育花粉。

Morphological and anatomical observationsshowed that the pol CMS plants in DGCMS-Yi-3A were complete sterile and hadno pollen sac differention at higher temperature condition,and were partialsterile and had 1-3 pollen sacs in each anther at lower temperature condition.

花器形态和花药发育的解剖观察表明，DGCMS-宜3A中表现波里马细胞质雄性不育的植株在高温条件下表现为彻底雄性不育，无花粉囊的分化；在低温条件下，表现部分雄性不育，可分化出1-3个花粉囊，产生少量可育花粉。

Morphological and anatomical observations showed that the pol CMS plants in RGCMS?117A or RGCMS S45A were complete male sterile ,had no pollen sac differentiation and had smaller petals and stamens at higher temperature situation.

花器形态和花药发育的解剖学观察表明，RGCMS S45A和RGCMS 117A中表现波里马细胞质雄性不育的植株，其花器形态和花药发育的解剖学特点与polCMS相同，即在高温条件下，花瓣较小，表现彻底不育，无花粉囊的分化；在低温条件下，花瓣变大，表现部分雄性不育，可分化出 1～ 4个花粉囊，并产生一定数量可育花粉。

Based on principle of pollen abortion, utilizing tapetum of anther cell, mitochondria of tapetum, callose well, process of cell meiosis during formation process of pollen, we adopt genetic transformation to create plant male sterility, such as, exogenous cytotoxin gene, chaperones, anti-sense RNA, degradation of callose ahead of time, disturbing information intercommunion between mitochondria and nucleolus and affected development of pollen sporule by bacteria.

根据花粉败育的原理，利用花药细胞绒毡层、绒毡层线粒体、胼胝质壁、细胞减数分裂过程等花粉形成过程中的不同环节，采取外源细胞毒素基因、分子伴侣、反义RNA技术、提早降解胼胝质、扰乱线粒体与细胞核之间的信息交流和细菌影响花粉小孢子发育等策略，使花粉不能正常形成，从而产生不育花粉，达到产生雄性不育的目的。

As be concerned,atocia and atictia are positive associated with psycholog-ical stress.The effect of the stress to atocia and atictia is risk factors of them.

研究表明，心理压抑与不孕不育呈明显正相关，心理因素对不孕不育的影响已是公认的不孕不育因素之一。

The effect of imposed sterility and culling on the reproductivity and population size of Ratlike hamster in enclosures was studied by using surgical operation. This study aims to testify two modeling predictions: fertility control can achieve similar result as simple culling, and sterility of both sexes can achieve an extra result in reducing reproductivity of hamsters. The key factors in population regulation of the hamster were also discussed.

本文采用结扎不育的方法研究了不育和&灭杀&对围栏内大仓鼠实验种群繁殖力和数量的作用，主要验证模型的两个预测：不育能够达到灭杀的效果；双性不育优于单性不育，同时探讨了大仓鼠种群调节中的关键因子。

Using plant AT-1found by kenaf breeding research group of institute of bast fiber crops Chinese academy of agricultural sciences in Sanya of Hainan province were used as female parent in crossing with 15-4, 04K1 and then backcrossed four times with male parent in order to select two high sterile male sterility.

利用中国农业科学院麻类研究所红麻育种课题组在海南三亚发现的红麻不育株AT-1做母本分别与15-4，04K1做杂交，再用父本回交4次，选育出2个高度不育的不育系。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。