花序列

As a result of sequence analyses, the Cyt b gene sequence of Actinia equine, Anthopleura xanthogrammica and Anthopleura midori are similar to Meridian senile (AF000023) of Actiniidae and similarity percent are 88%, 87.6% and 86.9%, respectively and all of them are in the same clade on phylogenetic trees.

结果发现，红海葵、黄侧花海葵及绿疣海葵3种海葵与已知的海葵科物种老年细指海葵的Cyt b基因序列相似性分别均为88%、87.6%和86.9%。

According to the results of sequence alignmenUhe partial Cyt b gene sequence of Actiniidae actinia equine, Anthopleura xanthogrammica and Anthopleura midori are similar to Metridium .yem7e(AF000023) of Actiniidae and similarity percent are 88%, 87.6% and 86.9%.,and all of them are in the same clade on phylogenetic trees.

红海葵、黄侧花海葵及绿疣海葵的Cyt b基因部分序列(1Kb左右)经比对，3种海葵与已知的海葵科物种羽毛状海葵(Metridium senile，AF000023)的Cyt b基因序列相似性分别达均为88

The mature protein sequence showed the identity to those of Galanthus nivalis agglutinin, Polygonatum cyrtonema agglutinin, Polygonatum multiflorum agglutinin, Aspidistra elatior Blume agglutinin DOM1, Aspidistra elatior Blume agglutinin DOM2, Zephranthes grandiflora agglutinin respectively are 44.0％、60.9％、58.7％、43.2％、52.6％、75.9％.

该成熟蛋白编码氨基酸序列与囊丝黄精凝集素同源性为60.9％，多花黄精凝集素58.7％，雪花莲凝集素为44.0％，蜘蛛抱蛋凝集素结构域1为43.2％，蜘蛛抱蛋凝集素结构域2为52.6％，麦冬凝集素为75.9％。

But it is obviously under 97.0% with other groups. With further comparing the rps3 gene of ribosomal protein gene for the CWB-YN strain,the results show that these strains shared highest homology (98.1% and 100%)with Aster yellows and Periwinkle yellows.

进一步比较CWB-YN株系核糖体蛋白基因rps3基因编码的氨基酸序列同源性，结果与16S rI–B亚组的翠菊黄化病植原体(Aster yellows，AY)和长春花黄化病植原体(Periwinkle yellows，PY)的同源性最高，分别达98.1%和100%。

Based on Phylogenetic analysis of sequences from these 10 phytoplasmas using PAUP (phylogenetic analysis using parsimony) software, these phytoplasmas could be classified into five groups. These phytoplasmas groups and strains were: group 1, sweetpotato witches' broom, mainland China strain of sweetpotato witches' broom, peanut witches' broom and Ipomoea obscura witches' broom; group 2, loofah witches' broom; group 3, elm yellows; group 4, rice yellow dwarf and sugarcane white leaf disease; group 5, New Jersey strain of aster yellows and western strain of aster yellows.

从spacer序列堆衍的亲缘演化树显示这10种植物菌质体可分为5群：第一群，甘薯簇叶病、甘薯簇叶病、花生簇叶病及细花牵牛簇叶病等菌质体；第二群，丝瓜簇叶病菌质体；第三群，榆树黄化病菌质体；第四群，水稻黄萎病及甘蔗白叶病菌质体；第五群，翠菊黄化病菌质体。

At present, most genes were isolated by screening the cDNA or DNA library with theprobes homologous to sequences of dicot plants, and their functions were identified by themorphology of floral organs in transgenic plant.

目前研究手段主要是利用双子叶植物的同源序列来筛选水稻的cDNA文库，获取相关基因，然后根据转基因植物花器官的表型来验证该基因的功能。

Soybean evolution from the ancient tetraploid flowers pollinate crops since the diplont, low level of genetic variation within species, genome larger and contains extensive areas of reproduction and rich repeat sequences, chromosome and small cells to carry out genetic research, which makes soybean genetic map study clearly behind other cr...

大豆是由古四倍体演变而来的二倍体自花授粉作物，种内遗传变异程度低，基因组较大并含有广泛的复制区和丰富的重复序列，染色体又很小，难于进行细胞遗传学研究，这使得大豆遗传作图研究明显落后于其它作物。

PCR-RFLP in FSHR gene 5'–flanking region with exon 1 digested by restriction endonuclease TaqⅠdemonstrated that the frequencies of allele A (0.5500) and genotype AA (0.5000) in twinning cows were higher than that of allele A (0.3500) and genotype AA (0.3000) in monovular cows for Qinchuan cattle, while The frequencies of allele B (0.5937) and genotype BB(0.6875) in twinning cows were higher than that of allele B (0.5416) and genotype BB (0.4167) in monovular cows for Holstein cattle. Key words: Bovine; Twinning; FSHR gene; PCR-RFLP

FSHR基因5'端（包括侧翼序列和第一外显子）的限制性内切酶TaqⅠ的PCR-RFLP标记研究发现，在秦川牛中双胎母牛的A基因频率（0.5500）和AA基因型频率（0.5000）分别高于单胎母牛的A基因频率（0.3500）和AA基因型频率（0.3000）；在黑白花奶牛中双胎母牛的B基因频率（0.5937）和BB基因型频率（0.6875）均高于单胎母牛的B基因频率（0.5416）和BB基因型频率（0.4167），也就是FSHR基因的5'端的PCR-RFLP标记在一个品种内单胎母牛和双胎母牛之间有一定趋势，但两个品种的趋势不同。

RDNA-ITS sequence analysis of 30 populations showed that there is difference among M. incognita, M. hapla, M. arenaria, M. javanica, M. panyuensis, M. zhanjiangensis. and M. hainansis, whereas little rDNA-ITS sequence difference among three normal Meloidogyne species.

通过对30个种群的rDNA-ITS序列分析，发现番禺根结线虫、海南根结线虫、北方根结线虫、湛江根结线虫、南方根结线虫、爪哇根结线虫和花生根结线虫种间的DNA-ITS区碱基序列存在差异，但后3种常见种之间差异小。

Homologous analysis of the deduced amino acid sequences were performed by BLAST and subsequently compared with GenBank data.

根据衣藻、矮牵牛花、Pisumsativum等真核生物hsp70a氨基酸高度保守序列设计两对简并引物，以热休克盐藻cDNA为模板进行巢式PCR扩增，产物经T-A克隆转化至JM109大肠杆菌中，经筛选后测序，将测序结果推导成氨基酸序列进行同源性分析，获得了盐藻热休克蛋白70a cDNA片段。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。