六倍体

SYNTHESIS OF TWO AUTO-ALLOHEXAPLOIDS FROM BRASSICA NAPUS L. AND ITS TWO PRIMARY SPECIES

欧洲油菜与其两个基本种间的两种同源异源六倍体的合成

2ASSR linkage map was constructed using 105 polymorphismic markers.Some newSSR markers were mapped in this SSR map.The map spans 2100.8cM covering most wheatchromosomes with an average interval of 22.6cM.

以105个SSR多态性标记构建了六倍体小麦的遗传连锁图谱，该图谱以标记间平均间距22.6cM覆盖了小麦基因组2100.8cM的长度。

It is a special characteristic that many Chinese common wheat landraces showed a high crossability with rye.

中国六倍体普通小麦地方品种有一个比较独特的特征-存在丰富的高亲和性材料。

The genetic variation of chloroplast genome in spelt and T. tibetanum was more abundant than that in common wheat and there were closer genetic relationships between common wheat and T. petropavlavskyi and between hexaploid wheat and emmer.

结论］斯卑尔脱小麦和西藏半野生小麦等群体内的叶绿体遗传变异比普通小麦更丰富；野生二粒小麦与六倍体小麦以及新疆稻麦与普通小麦之间具有很近的亲缘关系，为不同小麦种的遗传差异提供依据。

However, as a hexaploid species, this study was hampered by the complexity of the wheat genome.

然而，普通小麦作为异源六倍体物种，其基因组的复杂性为功能基因分子标记的开发带来了极大的困难，因此研究在普通小麦中开发SNP标记同样也具有重要的理论意义。

The results provide a theoretical basis for transferring fine genes from Hexaploid Triticale to wheat.

研究结果为将六倍体小黑麦的优良基因导入到普通小麦中提供了理论依据。

However, there is no complete waxy mutant in hexaploid wheat under the natural condition and it need to be produced artificially.

然而，在自然条件下六倍体小麦中则无全糯质小麦存在，需要人工创造。

Common wheat is a hexaploid species with a large and complex genome.

普通小麦是一个六倍体作物，基因组庞大且非常复杂，其功能基因组研究滞后于拟南芥和水稻等模式植物。

Hexaploid wheat has a lot of homoelogous gones in its genomes, and the main objective of wheat breeding is to get good phenotypes.

小麦是异源六倍体，其染色体组中存在着大量的同源基因，其育种的主要目标是获得可遗传的优良性状。

The extra divisions or fusions appearedonly in some flower buds of one plant, some anthers in the same buds, or even inindividual cells of tetrads.

六倍体Ⅲ和诸葛菜杂种的一个单株中，减数分裂粗线期之前未见异常，粗线期之后，染色体缺少配对的过程，单价体聚集在一起。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。