六倍

The result showed that newwheat species might be prodcued in progeny of unstable amphidiploid, which offeredsignificant pattern for evolution from octaploid wheat to hexaploid wheat and widenedthe train of thought of studying the origin of biological species.

这个结果显示，通过对双二倍体分离后代的有效选择，有可能形成一个新的小麦种，从而为从八倍体小麦向六倍体小麦演化提供了一个新的进化模式，拓宽了研究物种起源的思路。

Tibetanum were more abundant, which can be used to broaden the genetic basis of common wheat. Cluster analysis exhibited that wild emmer had a closer consanguine relationship to hexaploid wheat, as compared to Aegilops tauschi. In addition, it was found that there was a closer genetic relationship in chloroplast genome of common wheat and T. petropavlavskyi, which indicated that T. petropavlavskyi probably derived from the backcross between common wheat and Polish wheat.

结果］与普通小麦相比，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更丰富，可以作为普通小麦新的细胞质遗传变异来源；与粗山羊草相比，野生二粒小麦与六倍体小麦间存在更近的亲缘关系，这与前人关于二粒小麦是六倍体细胞质供体的研究结果相印证；研究还发现，新疆稻麦与普通小麦在叶绿体基因组上具有很近的亲缘关系，为新疆稻麦是由波兰小麦与普通小麦杂交再由普通小麦回交后产生的假说提供了分子水平上的证据。

CIMMYT synthetic hexaploid wheats were employed to cross with rye for evaluating the crossability of SHWs and screening SHWs with high crossability for distant cross. Great variation of the seed set percentage was observed among 102 SHWs ranged from 0% to 72.49%. Of 102 SHWs, 11 ones possessed the crossability higher than 50%, and one (YAR/Aegilops tauschii 518) had a similar crossability as Chinese Spring.

利用102份从CIMMYT引进的人工合成六倍体小麦与黑麦杂交，分析了人工合成六倍体小麦的可杂交性，结果表明：人工合成小麦的可杂交能力变异很大，从0%~72.49%；其中有11份人工合成小麦的可杂交率超过50%以上，1份人工合成小麦YAR/Aegilops tauschii 518的杂交结实率达到72.49%，与中国春相似。

They are complex polyploids, being partly tetraploid and partly hexaploid

它们是复杂的多倍体，其中一部分是四倍体，一部分是六倍体。

These microscopic characteristics of pollen grain and stomata could be used as the evidence to identify diaploid spieces and hexaploid, octoploid spieces whose chromosome ploidies are hugely different.

结论］用花粉粒和气孔的一些微观特征作为鉴别二倍体和六倍体、八倍体等染色体组倍数相差较大的物种有一定的依据。

Percentage of seedling in hexaploid Tritical X common wheat was more high because endosperm developed very well than that in common wheat X hexaploid Tritical because endosperm developed bad. Many seeds and good seedling were obtained by back-crossing.

2六倍体小黑麦×普通小麦与普通小麦×六倍体小黑麦两种杂交方式都有比较高的杂交结实率，但前者种子发育好，种子相对饱满，出苗率高，后者种子胚乳发育不良，出苗率低。

For the chip of frequency multiplier, 2 and 16 times of frequency multiplier with 23 GHz output are both gotten by test.

改进异或门实现的倍频器，不仅在23GHz上得到较好的二倍频测试结果，还在十六倍频上得到结果。

"Wheats are called diploids when they have seven chromosomes, tetraploids when they have fourteen , and hexaploids when they have twenty-one."

其性细胞具有7条染色体的小麦称为二倍体；具有14条染色体的称为四倍体；具有21条的称为六倍体。

Most primers amplified same bands in diploids, tetraploids and hexaploids. It suggest that D and AB genomes have high homology and D genomes be successfully transferred from diploid to hexaploid.

从供试的绝大多数引物均能在不同倍性小麦中扩增出相同的条带证明了D染色体组和AB染色体组间存在着很高的同源性以及利用二倍体和四倍体小麦杂交人工合成六倍体小麦的真实性。

Pitardii,all from the Jinshajiang Valley of Yunnan and Sichuan, were cytologically studied in this work. Among 34 populations of C.reticulata studied here, 21 were found to be tetraploids (2n=60), 11 hexaploids (2n = 90), and the remaining two diploids (2n = 30). Tetraploid was reported in C. reticulata for the first time and its karyomophology was studied.

reticulata及其两个近缘种(怒江山茶C.saluenensis和西南山茶C.pitardii)进行了细胞学研究。34个居群的云南山茶花中，21个居群是四倍体类型(2n=60)，11个居群是六倍体类型(2n=90)，另2个居群为二倍体(2n=30)，云南山茶花的四倍体类型为首次发现，并且进行了核形态研究。

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。