本文提出了植物染色体图象的一个自适应多元回归复原方法。
An adaptive restoration approach for chromosome images is proposed in this paper.
本文讨论了着丝粒横裂和并合及其在高等植物染色体进化中的意义。
In this paper, centric fission, centric fusion, their mechanism and significance in chromosomal evolution of higher plants were reviewed.
与一般植物染色体的常见变异形式相反，在裸子植物中存在从高不对称性到低不对称的变异形式。
Contrary to common variation type in Angiosperms, the variation from high unsymmetric karyotype to low unsymmetric karyotype was found in existence in Gymnosperm.
多倍体是高等植物染色体进化的一个显著特征，约70 %的被子植物在其进化过程中曾经历过一次或多次多倍化事件。
Polyploid is a remarkable characteristic in the chromosome evolution of higher plant, and about 70% of angiosperms have experienced polyploidization once or more in their evolutionary history.
这种植物种群数量的“大爆炸”是在古代植物染色体组加倍时发生的。染色体组加倍给植物提供了大量具有新功能的基因，这些新基因又形成了新特性。
These "big bangs" in plant evolution occurred when the genomes of ancient plants duplicated, providing vast Numbers of new genes that could take on new functions and lead to new traits.
他们发现，那些受损后迅速恢复的植物dna含量暴增——其中一些原本只有10个染色体细胞，已经拥有了320个染色体。
And they found that the plants that bounce back after clipping boost their DNA content-some of their cells go from having 10 chromosomes to having 320.
无论是动物还是植物，其细胞核内的染色体，不仅具有一定的数目，而且还有一定的形状。
No matter what plant or animal, the chromosome in its karyon has a certain number and shape.
秋水仙碱一种有毒的、淡黄色生物碱，c22h25no6，从秋天的番红花中提取，用于植物生长中的染色体加倍和用于治疗痛风。
A poisonous, pale-yellow alkaloid, C22H25NO6, obtained from the autumn crocus and used in plant breeding to induce chromosome doubling and in medicine to treat gout.
同时对花药壁、植物激素在花粉粒发育中的作用及再生植株染色体倍性问题进行研究。
In the meantime, we studied the action of anther wall, plant hormone in developing of the pollen, and chromosome multiple of regenerate plantlets.
细菌人工染色体(BAC)是一种承载dna大片段的克隆载体系统，用于人、动物和植物基因组文库构建。
Bacterial artificial chromosome (BAC) is a kind of vector system used to construct large fragment insert libraries of genome DNA in human, animals and plants.
重复DNA沿染色体的分布是认识植物基因组的组织和进化的要素之一。
The distribution of repetitive DNAs along chromosomes is one of the crucial elements for understanding the organization and the evolution of plant genomes.
本文采取常规根尖压片法对5种干旱区野生观赏植物进行了染色体数目统计，并对其中的3种进行了核型分析。
The chromosome Numbers of 5 species were counted by root tip squash method, and karyotypes of 3 species of them were analyzed.
每一根染色体包含了许多指挥被细胞所需要的蛋白质所产出的基因。基因存在于植物、动物、人类，甚至是一些病毒中。
Each chromosome contains many genes that direct the production of proteins needed by cells. Genes exist in plants, animals, human beings and even some viruses.
在数据库的统计数据基础上，我们分析了裸子植物的染色体特征。
By data collection of the database, we analyzed chromosome features of the group Gymnosperm.
植物特异DNA序列是指在某些植物属、种、基因组或染色体上单独具有的特异存在的DNA序列。
The specific sequences of DNA in plants were the DNA sequences that were specific existed in some chromosome, genome, species or genus of plant.
染色体是遗传信息的载体，染色体数目和核型信息是植物分类学、细胞学、遗传学研究的基础。
Chromosomes are the carrier of gene. Chromosome number and karyotype are the ground work of taxonomy, cytology and genetics.
基于数据库的统计资料，我们选取了裸子植物类群对其染色体的变异和演化特征做了探讨。
Based on this database, we chose the part of gymnosperms and gave a discussion to the features of its chromosomes' evolution and variation.
几种盐肤木属植物的染色体观察。
对山茶属的14种植物的染色体进行了研究。
Studies were carried out on the chromosomes of 14 species of Camellia.
植物单体或双体异附加系是重要的遗传材料，在基因定位、物理图谱构建及染色体工程育种上具有十分重要的作用。
Monosomics and disomics additional lines of plants are the important materials in gene location, physical mapping and chromosome engineering breeding.
用一种植物的总基因组dna与近缘或远缘物种的染色体杂交，可以研究植物近缘或远缘物种基因组进化关系。
The comparative analysis of genomic evolution between closely or distantly related species has been analyzed by a genomic DNA cross-hybridized with other species.
用一种植物的总基因组dna与近缘或远缘物种的染色体杂交，可以研究植物近缘或远缘物种基因组进化关系。
The comparative analysis of genomic evolution between closely or distantly related species has been analyzed by a genomic DNA cross-hybridized with other species.
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