查询词典 fertility

The pollen fertility of two-line hybrid rice and conventional rice was observed under normal and low temperature conditions.

考察了水稻常规品种及两系杂交稻在低温影响前后的花粉育性变化。

These studies can provide some theoreticalbases for scientifical management of understory plants,protection of soil fertility,and restoration andprotection of species diversity.

以便为杉木人工林林下植被的科学管理、人工林地力维护及物种多样性的恢复和保护提供理论依据。

While in the underworld, the world's fertility was disrupted.

在冥界的时候，世界的肥沃被中断了。

There are three copies of R fragment in the S mt-genome, and each copy contains two closely adjacent open reading frames: orf355 and orf77. Among these three copies two BamHI fragments were cloned, and the sequence analysis showed that cox1 and cox2 gene lies upstream of the R region in each fragment, respectively. However, they locate in different strands and head to head with R. In this study, we found that:(1) The expression of cox1 and cox2 is not affected by the transcription of R region;(2) The two copies of R region transcribe in large amount in the microspores, and produce transcripts of 1.6kb and 2.8kb, respectively, in the sterile microspores; However, the abundance of these two transcripts is reduced in the fertility restored microspores, realized through the mRNA decay, and this reduction occurs at the uninucleate microspore stage;(3) In the sterile microspores, the 5 terminus of the 1.6kb transcript contains a palindrome region that can fold into a stem-loop.

本研究发现：(1) cox1和cox2的转录没有受到R区转录的影响；(2)两个拷贝的R区在在不育花粉中高丰度表达，其转录本大小分别为1.6kb和2.8kb；而在育性恢复的花粉中，这两个转录本的丰度被大大降低，进一步分析表明这一结果是通过mRNA分子的降解途径来实现的，此降解过程发生在单核花粉期；(3)在不育花粉中，1.6kb转录本的5′末端具有一段可形成茎环结构的迴文对称序列，而在可育花粉中，其5′末端短缺了9个碱基；(4)在不育花粉和育性恢复的花粉中，R区转录本的加尾位点都集中位于一个3′茎环结构之后；(5)不管是在不育花粉还是育性恢复的花粉中，orf77区域内均在第52位和100位核苷酸处发生了不同频率的C向U的编辑，从而形成UGA终止密码；(6)不管是orf55-orf77的成熟转录本还是转录前体分子，都已被加上了Poly尾巴，表明已进入降解途径；在以上实验结果的基础上，本研究对S型CMS花粉育性的恢复机理进行了如下推测：在不育花粉和育性恢复的花粉中，orf77区域内均发生了终止编辑，即由RNA编辑产生了提前终止密码子。

All information shows soil fertility has important influence on the relationship between soil urease activity and pollutants.

该结果揭示出土壤肥力对外源物质与土壤脲酶活性的关系有重要影响。

The synthetic evaluation of soil biology---biological fertility indices were (0-40cm depth of soil, same below): 0.635 →0.074 →0.014 . Significant degradation of soil texture, obvious decrease of soil organic matter , and increase of the availability of aluminum were found in the degradation series. Along with the fast vanishment of vegetation, the number of soil microbe and enzymatic activities decreased drastically, among which protease activity degraded most markedly and was only detected in soil of ZR.

土壤物理性质中，土壤质地发生了根本性退化；土壤化学性质中，随着植被的退化，有机质含量的减少和Al的有效性的提高都很明显；土壤微生物和酶活性中，各类微生物的数量退化非常显著，其活性也随植被的退化急剧减弱，酶活性也大大降低，以蛋白酶活性降低最为显著，大部分退化地段未检测出蛋白酶的活性。

Surgery may be advised if the varicocele is causing discomfort or fertility is an issue.

手术可能会建议，如果是精索静脉曲张引起的不适或生育率是一个问题。

There is a loss of vegetative cover and the soil deteriorates in texture, nutrient content and fertility.

植被的丧失和土壤结构、营养和肥力的恶化在此处发生。

After realizing vinasse importance in improving soil fertility it has been completely used in sugarcane fields.

在认识到酒糟在改善土壤肥力上的重要性后，几乎全部被用在蔗田中，表6示出每立方米酒糟中养分平均含量。

After realizing vinasse importance in improving soil fertility it has been completely used in sugarcane fields. The average content of nutrients per cubic meter of vinasse is presented in Table 6, made by Rodella et al.

在认识到酒糟在改善土壤肥力上的重要性后，几乎全部被用在蔗田中，表6示出每立方米酒糟中养分平均含量。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。