查询词典 sterile

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。

In Japonica heterosis utilization, the purity of hybrid seeds was sometimes low due to the self-fertility and/or unstable sterility of some BT type Japonica cytoplasmic male sterile lines. For the WA type Japonica CMS lines, their sterility is much stable, but there is also some difficult to take use of them because their flowering habit is bad and it is very difficult to restore their fertility. The HL type CMS lines were identified to have the same flowering habit and outcrossing rate with the BT type CMS lines in Japonica hybrid rice. Moreover, the sterility of HL type CMS lines was more stable than that of BT type, and their restorable characteristics was better than that of WA type.

部分BT型粳稻不育系存在自交结实现象，不育性的稳定性较差，影响杂交种的纯度；WA型粳稻不育系虽然不育性稳定，但开花习性差，育性最难恢复，应用难度较大；HL粳稻不育系开花习性及异交结实率与BT型粳稻不育系无显著差异，育性稳定性明显好于BT型粳稻不育系，可恢复性明显好于WA型粳稻不育系，较好地协调了育性稳定性、开花习性和可恢复性几方面的矛盾。

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。

The flowers of the yellow form are perfect but self-sterile.

花黄色形式是十全十美，但自育。

It had four hundred sections—each partitioned by semiopaque plastic curtaining, and each fitting with a sterile-field generator that blazed with its characteristic orange light overhead.

它有四百个分区——每一个都被半透明的塑料帘隔开，里面装有一个无菌区域发生器，用特有的橙色光从头顶上把这里照亮。

With either shelf-life system, it is important that staff be properly trained to handle sterile products.

不管使用哪一种有效期系统，非常重要的一点是人员受到正确培训。

And many mutant plants such as male sterile, large silique, large spike, and leaf color etiolating properties were discovered.

加倍材料自交1代群体（D2代）呈现丰富的农艺性状、育性等方面的变异，出现了雄性不育、大角果、大粒、叶色黄化等很多不同变异类型的植株。

METHODS Sterile polyvinyl alcohol sponge discs which were labeled as physiological saline group and sinapine groups were implanted into the subcutaneous part of rat.

方法将聚乙烯醇海绵盘随机分为生理盐水对照组和不同剂量芥子碱组，植入小鼠皮下，构建盘状血管生成模型，观察术后12d的血管生成情况及组织生成情况，以蛋白定量检测试剂盒检测在海绵组织中的可溶性蛋白含量，对海绵冰冻切片行苏木精-伊红染色，应用计算机图像处理分析系统分析海绵内组织生长情况。

Panicle open, 10–30 cm; branches in distant whorls, capillary, flexuous, 5–15 cm, mostly unbranched, tipped by a raceme; racemes 2–5-noded with 7–13 spikelets, sometimes branched with up to 40 spikelets, disarticulating at maturity, one spikelet of a pair sessile, the other pedicellate; rachis internodes and pedicels slenderly clavate, margins ciliate, hairs 0.7–1 mm. Spikelets 4.5–5 mm; callus hairs ca. 1 mm; lower glume lanceolate, thinly pilose, veins smooth below middle, scaberulous above, apex acuminate; upper glume ciliate on margins, acuminate or emarginate and mucronate; lower floret sterile, palea reduced; upper lemma 2-lobed to middle; awn 5.5–8 mm.

圆锥花序打开，10-30厘米；在远轮生方面的分枝，发状，，5-15厘米，多数不分枝，被总状花序端部； 7-13小穗2-5有节具的总状花序，40小穗的有时分枝具可达，成熟时脱节，一对无梗，另一个的一小穗；棍棒状的轴节间和花梗slenderly，边缘具缘毛，头发0.7-1毫米小穗4.5-5毫米；胼胝体毛约1毫米；披针形，稀疏具柔毛的下部的颖片，脉平滑的中间以下，在上面微糙，先端渐尖；在边缘上具缘毛的上面颖片，渐尖的或微缺和短尖；不育的下部小花，退化的内稃；上面外稃2裂的至中部；芒5.5-8毫米花粉囊2-3毫米。

Social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers.

群居昆虫，生活在有组织的群落中；特征是雄性和有生殖能力的蚁王在繁殖季节有翅膀；没有翅膀、不能生育的雌性为工蚁。

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。