查询词典 cytological

Morphological and cytological observations showed that the pol CMS plants in DGCMS Yi 3A were complete male sterile, had no pollen sac differentiation and had smaller petals and stamens at higher temperature situation.

花器形态和花药发育的解剖学观察结果表明，DGCMS-宜 3A中表现波里马细胞质雄性不育的植株，其花器形态和花药发育的解剖学特点与 pol CMS相同，即在高温条件下，花瓣较小，表现彻底不育，无花粉囊的分化；在低温条件下，花瓣变大，表现部分雄性不育，可分化出 1～ 4个花粉囊，并产生一定数量可育花粉。

Cytoembryological studies were employed to reveal theorigin of haploid and to determine the cytological factersrelating to the production of diploid polyembryony withinone embryo sac occurring in natural population of apolyembryonic line SB-1 of O.sativa.

SB-1自然群体中的单倍体来源于助细胞无配子生殖。细胞胚胎学研究表明，卵器中的一个或两个助细胞能在受精之前发育成胚，其发生率分别为观察子房数的2.24%和1.75%。

This study aimed to analyze the morphological and cytological characteristics of Ranunculus cantoniensis within and among populations.

运用居群学的方法，对居群内、居群间的禺毛茛进行了形态及细胞学两方面的性状分析。

When EMS was applied, it was found that 2.0% EMS resulted the highest microkernel rate (15.6‰). Treating the materials with 2.0% EMS for 4 hours could lead to semi-lethal. Cytological observations found that chromosome aberration phenomena such as single microkernel, double microkernel, three microkernel, chromosome bridge, resort chromosome and syncytium were presented in the mutants.

EMS诱变途径中，浓度为2.0 %处理时间为4 h的组合获得最高的微核率（15.6‰），EMS浓度为2.0 %处理时间为4 h的组合使材料达到半致死；细胞学的观察看到了单微核、双微核、三微核、染色体桥、滞留染色体和合胞体等染色体畸变现象，再生苗中发现了1棵变异株。60Co辐射的诱变途径中，20Gy的剂量使不定芽半致死，再生苗中发现了1棵变异株。

OBJECTIVE: To study the value of the fine needle aspirationin cytological examination for child thyroiditis.

目的： 探讨细针吸取细胞学检查对儿童甲状腺炎的诊断价值。

Cytological observation Result showed that 54%-70% little spore stated in uninucleate stage when bud was long 2.0-3.0mm, Petal to anther was 1/2-4/5, this time was the best period for anther culture.

结果表明，当花蕾长为2.0~3.0 mm，花瓣与花药长度之比为1/2~4/5时，54%~70%的小孢子发育处于单核靠边期，最适合进行花药培养。

Objective To observe the effects of low dose of veratrine on the discharges of rat hippocampus pyramidal neurons, and to elucidate its possible cytological mechanism.

目的 观察小剂量藜芦碱对大鼠海马CA1锥体神经元放电的影响，并对其诱发产生癫痫样放电的离子机制进行初步探讨。

Objective To study the method of isolation and cultivation of neural stem cells from newborn rat spinal cords and identification of its differentiation,to establish cytological foundation for vicariousness therapy of peripheral nerveous system diseases by using spinal stem cells.

目的：探讨分离、培养新生大鼠脊髓源性神经干细胞的方法并对其进行分化鉴定，为临床应用脊髓神经干细胞进行周围神经系统疾病的替代治疗奠定细胞学基础。

Cytological studies show that the incompatibility of interspecific hybridization of Abies is mainly due to the abort of embryos or ovules.

细胞学研究发现，杂种胚阶段胚或胚珠的败育是冷杉种间杂交不成功的主要原因。

Cytological studies show that the incompatibility of interspecific hybridization of Abies is mainly due to the abort of embryos or ovules.

布朗决定取消11月举行全国大选的计划，9。杂种胚阶段胚或胚珠的败育是冷杉种间杂交不成功的主要原因。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。