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The first demonstration of the formation of adventive emtryos from carrot tissue explants can be traced to the work of Reinert.

由胡罗卜组织外植体来的可定胚形成的最初证实可追溯到Reinert的工作。

According to the formation of the apomitic embryos, apomixis could be divided into three major types: diplospory, apospory and adventive embryony.

按其胚体发生的途径，无融合生殖可分为二倍体孢子生殖、无配子生殖和不定胚生殖三种类型。

Third, the formation of a strong advocacy networks.

第三，形成了强有力的宣传网络。

The Mg〓 ions in solution take part in the formation of passivation film, which was thicker than that formed in solution without Mg〓. In natural saturated air water and aerated water, the effect of several kinds of anions, dissolved oxygen pH and Ca〓, Mg〓 ions on corrosion inhibition of tungstate was investigated.

钨酸盐作为主要成分的缓蚀剂已经开始实际应用，但是对其缓蚀机理、特别是复配使用时的协同增效机理研究不多，本论文对钨酸盐及其复配缓蚀剂的缓蚀作用和协同增效机理进行了研究，并研究开发了环保型无磷钨系复合水处理剂。

In short, programmed cell death is shown to be the mechanism involved in lysigenous aerenchyma formation by the phytohormone ethylene.

在缺氧条件下，植物根皮层细胞会死亡解体，致使崩溃细胞的径向胞壁聚集在一起，形成大的空腔。

The discussion addresses the relationship between adventitious root,their internal aerenchyma formation and the flooding tolerance of plant.

根据实验结果，本文重点讨论了不定根的发生及其内部通气组织的形成与植物耐淹能力间可能的联系。

The present results support the hypothesis that an enhanced cellulase activity is involved in the lysis of cortical cells leading to aerenchyma formation under a waterlogged condition.

研究结果显示纤维素酶活性的表达与皮层细胞的细胞壁降解紧密相联，支持前人提出的纤维素酶参与了通气组织形成过程的假说。

Combining the former investigations on root structure and physiology of these genotypes with the present result, it's concluded that this is a novel waterlogging tolerance gene related to structural adaptation, and can be induced in roots of sesame and wheat under anoxia stress where endogenous ethylene production and formation of aerenchyma have been observed.

结合前期有关根结构和生理研究表明，XET在芝麻和小麦根中受厌氧诱导表达，与根中内源乙烯增生以及根皮层通气组织形成具有同步性，为新的与结构适应相关的耐渍基因。

Wetland plants have a series of physiological and anatomical characteristics to adapt flooding habitat, e.g., their root aerenchyma and oxygen-penetrating capability can make the rhizospheric micro-environment be under oxidation condition, resulting in the formation of Fe/Mn plaques on root surface.

湿地植物具有一系列生理和结构上适应浸水环境的特征，如根系的通气组织和渗氧能力，这使得植物根际微环境处于氧化状态，这样土壤中的铁和锰会在植物根表被氧化而形成红棕色的铁锰氧化物胶膜。

32P isotope tracing technique was used in this study,and the results indicated that phosphorus stored or pre-existed in roots would be remobilized in maize under phosphorus deficiency from root cortical cells with lysis to shoot mostly rather than root apex during aerenchyma formation.

Kraus等的试验表明玉米根系从土壤中吸收的32P可在根皮层内保留15 d，之后逐渐减少[2]。这意味着与叶片的情形相似，根内也进行着磷的活化和再运转。当植物处于磷胁迫下时，根系吸收的磷素远不能满足植物各器官生长发

You have to walk your own alk in this life.

次生中你必须走自己的路。

To start with, the thesis analyses ***ism in terms of the generic masculine words, word order and semantic derogation of women in greater detail.

论文首先从阳性词泛指，词序，词义的贬降等方面对英语中的性别歧视现象进行了详细的分析。