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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;第二群,丝瓜簇叶病菌质;第三群,榆树黄化病菌质;第四群,水稻黄萎病及甘蔗白叶病菌质;第五群,翠菊黄化病菌质

During capacitation Ca〓 was present on the outer surface of IAM and in the released acrosomal contents.

精子获能前内存Ca〓主要分布于顶外膜内侧和顶内膜与核膜之间,并在获能和顶反应过程被动员利用;顶反应精子Ca〓分散存在于释放的顶内容物中和结合于顶内膜外侧,可能与顶酶的活性有关;(9)。

The results are as follow:(1) In static status, the velocity of jet flow shows a symmetry distribution through central axis of enclosure.

结果表明,腔静止时,射流速度沿腔中心轴对称分布,腔中心轴上的速度最大,两侧流速逐渐减小,近壁处为零;腔转动时,在哥氏力的作用下,射流中心发生偏转,流场相对于腔中心轴不再对称分布,腔中各点处的流速分布随角速度而变化,压电射流角速度传感器利用这一特性敏感角速度。

The results showed that the different cut sites had the different RBSN and RQ. The superiority in RBSM occurred in the body segments with heart and clitellum, with head or only without head, the body segment number which remaining above 1/2, while the other groups had fewer RBSN.

切后都保留了心脏、生殖环、脑或只切除了脑,所剩节数均在实验所用蚯蚓的节数的1/2以上的蚯蚓段,再生节数明显,其它各段组再生节数不明显或无。

There were no significant correlations between food concentration and the rate of population increase of Clone B as well as the mixis rate and fertilization rate of Clone A, B and C. However, the relationships between food concentration and the rate of population increase of Clone A and C were significantly curvilinear, with the regression equation Y=0.019X2-0.209X+0.638 and Y=0.042X2-0.402X+0.852, respectively. The relationships between the food concentration and the instant rate of population increase, the mixis rate and the fertilization rate of clone D were all significantly curvilinear, with the following regression equations Y=-0.052X2+0.609X-0.667,Y=0.994X2-15.763X+73.424 and Y=-0.251X2+15.940X-15.446, respectively.

克隆B的种群瞬时增长率、种群中的混交雌百分率和混交雌受精率均与食物密度间无显著的相关性;克隆A和C的种群瞬时增长率与食物密度间呈曲线相关,而其种群中的混交雌百分率和混交雌受精率均与食物密度间无显著的相关性;克隆D的种群瞬时增长率、种群中的混交雌百分率和混交雌受精率均与食物密度间呈曲线相关。

F〓 of transgenic allotetraploid fish containing"all-fish"transgene——pCAgcGHc was obtained respectively by inbreeding and gynogenesis. Positive rate of pCAgcGHc detected by PCR was 90% in F〓 of transgenic allotetraploid fish produced by inbreeding, while most F〓 of transgenic allotetraploid fish produced by gynogenesis showed diploidy measured by flow cytometer. The results above imply that developing the pure line of transgenic allotetraploid fish through inbreeding is feasible, but the operation should be modified if gynogenesis is introduced.

采用近交和雌核发育方法培育出转pCAgcGHc基因异源四倍鲫鲤F〓代,通过PCR检测,外源基因pCAgcGHc在近交转pCAgcGHc基因异源四倍鲫鲤F〓中的整合率为90%,而流式细胞技术检测雌核发育转pCAgcGHc基因异源四倍鲫鲤F〓的倍性多为二倍,说明通过近交筛选转基因异源四倍鲫鲤纯系的方法是可行的,但是通过雌核发育来筛选转基因异源四倍鲫鲤纯系还要就方法上进一步的改进。

When the molar fraction of SnO2 is 83%, the main component of the coating isO2 solid solution with rutile structure. When the molar fraction of SnO2 is 44%, the main components of coating are theO2 solid solution with rutile structure andO2 solid solution with fluorite structure. When the molar fraction of SnO2 is 17%, the main component of the coating isO2 solid solution with fluorite structure. Annealed at higher temperature than 450 ℃, CeO2 is found in the coating containing 83%Sn, and there is not SnO2 in the coating containing 83%Ce, which suggests that fluoriteO2 has higher thermal stability than rutileO2. When the molar fraction of SnO2 increases, the dispensability of the coatings is improved greatly.

结果表明:通过控制制备条件可获得具有纳米结构的钛阳极涂层;当Sn的摩尔分数为83%时,涂层主要为金红石相的O2固溶;当Sn的摩尔分数为44%时,涂层中金红石相O2固溶和萤石结构的O2固溶共存;当Sn的摩尔分数为17%时,涂层由萤石结构的O2固溶组成;高于450 ℃退火时,含83%Sn的涂层中出现CeO2相,而在含83%Ce的涂层中没有出现SnO2相,表明在相同的溶质浓度下,萤石结构的O2固溶比锡基金红石相O2固溶具有更好的热稳定性;而涂层中的SnO2具有明显改善涂层分散性的作用。

The mineral chemistry, trace elements and Sr-Nd isotopic geochemistry of different types of deep-seated inclusions indicate that Group Ⅰinclusions in western Shaudong could be the relicts of high degree of partial melting of the mantle-derived peridotites and then subjected to mantle metasomatism; the dunite and harzburgite in Group Ⅱ inclusions could be resulted from the metasomatism of silica-rich melts in the upper mantle; the olivine-pyroxenite and pyroxenite in Group Ⅱ and Group Ⅲ inclusions could be magmatic cumulates derived from magma underplating in the upper mantle.

不同结构类型深源岩石包的矿物化学、元素和同位素地球化学研究表明,鲁西具有变质变形结构特征的橄榄岩类岩石包为岩石圈地幔橄榄岩部分熔融后的残留,其后又遭受了地幔交代作用的改造;具有变质变形结构,并叠加有矿物反应结构的纯橄岩和方辉橄榄岩类包为古老岩石圈地幔被富硅质熔改造的结果;具有残留岩浆结晶结构的橄榄岩、橄辉岩类岩石包以及具有变晶结构或堆晶结构的辉石岩类包为地幔更早期岩浆作用的在上地幔的堆积

Primary atrial tumor has obvious characteristic on RT-3DE: All the atrial tumor display the same size of stereoimages as the tumor themselves. There is a clear boundary between the stereoimage of the myxoma and the atrial wall and there exists a short pedicle connecting the atrial myxoma to the atrial wall or the interatrial septum. The body of the atrial myxoma moves to and fro through the atrium and the atrioventricular valve with the contraction and relaxation of the heart with a fixative pedicle. Atrial myxoma leads to relative atrioventricular valve incompetence during systolic phase and relative atrioventricular valve stenosis during diastolic phase, but doesn't result in pathological changes of atrioventricular valve which restore to normal after exsection of the atrial myxoma. Malignant atrial tumor closely and extensively contact with atrial wall without obvious boundary, pedicle and movement with the contraction and relaxation of the heart.

所有心房肿瘤RT-3DE均实时显示与肿瘤大小相同的立形态图像;心房黏液瘤立形态图像与心房壁界限明显,都通过一短蒂与房间隔或心房壁相连,瘤以蒂为固定点随心脏收缩、舒张在心房与房室瓣口之间往返运动;心房黏液瘤收缩期瘤导致房室瓣相对关闭不全,舒张期瘤导致房室瓣相对狭窄,但瘤不引起房室瓣器质性病变,瘤摘除后房室瓣功能即恢复正常;恶性心房肺瘤立形态图像与心房壁关系密切,界限不明显,接触范围广泛,无蒂,瘤不随心脏收缩、舒张运动。

To further understand mechanisms that control male gametogenesis and embryo development,we performed an genetic screen for mutations that caused distorted Mendelian segregation in Ac/Ds transposon system in Arabidopsis thaliana.

通过卡那霉素抗性(由突变中标记基因编码)非孟德尔分离,从Ds插入的拟南芥突变库中筛选到一个雄配子发育突变:ovp1和一个早期胚胎发生突变eed1,我们对这两个突变的表型和相关基因进行了研究。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。