种质

There are two types of maturation according to our observation.One is nucleocapsids obtained its tegument in the nucleus and enveloped from the inner nuclear membrane.Another is nucleocapsids entered cytoplasm through nuclear membrane,then obtained their tegument in the cytoplasm,enveloped from the plasma membrane,finally released by necrosis,exocytosis or other ways.

病毒成熟有两种方式：一为细胞核内核衣壳在核内获得皮层，通过核内膜获得囊膜成为成熟病毒；二为核内核衣壳通过内外核膜进入胞浆，核内和胞浆内的核衣壳在细胞浆中获得皮层，然后在各种质膜上获得囊膜，最后成熟病毒通过细胞破裂或其他方式释放到细胞外。

The genetic diversity of 23 maize inbred lines and one teosinte accession was analyzed based on microsatellite and AFLPs markers.

利用SSR，AFLP两种分子标记方法研究了23个玉米种质材料的遗传多样性，并对这两种分子标记系统进行了比较。

The objective of this study was to compare the effect of distant hybridization between a new teosinte Germplasm named 'LUMU No.2' and 11 temperate maize inbred lines on the mode of dependency and field in long sunlight condition.

采用保护地和大田种植两种栽培模式，以"鲁牧2号"大刍草新种质为父本，11个温带玉米自交系为母本，对其在长日照条件下的远缘杂交效果进行了比较研究。

The cloned BBE gene sequences were 94.84% identified with the reported BBE genes in GenBank previously. Based on the cDNA sequences of COR and BBE ,two fragments about 400～500 bp from each gene with lower identity among them were cloned. The fusion gene BC (744 bp) is fused by the PCR technique. Then the promoter CaMV 35S driven, containing'forward BC fusion fragments-reverse pdk intron-reverse BC fusion fragments', plant siRNA expression vector were constructed based on the vectors pHANNIBAL and pART27.The work will lay the foundation for breeding a low morphine and high thebaine poppy.

利用blast及分子生物学软件DNAStar对COR和BBE基因的cDNA序列同源性进行分析比较，分别从各基因中筛选和克隆了一段同源性极低、约400～500 bp的片段；并应用重叠PCR法将其拼接成744 bp的融合基因BC，以中间载体pHANNIBAL和植物表达载体pART27为基础，构建了以CaMV 35S启动子驱动的含有"正向BC融合片段- pdk内含子-反向BC融合片段"的ihRNAi植物表达载体，通过转化野生罂粟，初步研究了以COR和BBE基因为靶标的RNAi对内源吗啡合成的抑制效果，为进一步培育低吗啡高蒂巴因的罂粟种质提供了依据。

As De Groot observes (lsc, IV, 67):"Taoism being fundamentally a religion of the Cosmos and its subdivisions, old Chinese Cosmogony is its Theogony. It conceives the Universe as one large organism of powers and influences, a living machine, the core of which is the Great Ultimate Principle or T'ai-kih, comprising the two cosmic Breaths or Souls, known as the Yang and the Yin, of which, respectively, Heaven and Earth are the chief depositories. These two souls produce the four seasons, and the phenomena of Nature represented by the lineal figures called kwa".

作为德葛鲁特观察（ LSC种质，四， 67岁）说："道家从根本上被一个宗教的宇宙及其分支机构，中国古老的宇宙起源是其theogony它构思宇宙作为一个大的有机体的权力和影响力，谋生机，其核心是伟大的终极原则，还是t'ai - kih ，组成两个宇宙呼吸或心灵，被称为阳和阴，其中，分别为，天与地都是行政托管机构，这两个灵魂产生四季节和现象的性质，代表了由直线数字所谓土瓜湾"。

It is an effective approach that researched and preserved the sources of species by tissue culture.

利用组织培养的方法研究和保存珍稀的种质资源，是一种有效途径。

These results revealed that triploid plants could be used as maternal parents in sexual crossing to create novel citrus germplasm.

本研究结果表明，三倍体在柑橘的有性杂交育种中可用作母本进行新种质的创造。

This research would also facilitate the germplasm conservation of rare plant Chinese tulip tree in Mount Emei by employing tissue culture approach.

该研究也为进一步用组织培养法保存峨眉山珍稀植物鹅掌楸种质资源提供了参考。

The underutilization of germplasm resources and empirical based approach by conventional breeding strategy are responsible for the slow progress of rice improvement in the past decades.

现有常规育种技术对种质资源的低利用率及其在性状改良上的局限性是近几十年来水稻改良出现徘徊局面的根本原因。

The primers of ITS-1 and ITS-2 proved to be very universal in a large variety of mollusc species. The potential uses of the 2 sequences for genetic variation studies and phylogenetic research in scallop species were discussed too.

这两个变异性较大的序列在扇贝种群中应用潜力很大，可广泛用于种内群体间遗传变异研究、种质鉴别及系统学研究。

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％。