查询词典 pollen sac

Four testing methods to detect the pollen viability of cucumber were being compared. The results indicated that I-KI staining method and acetic red dyeing were not suitable to judge the pollen viability of cucumber. Tetrazolium method can be used but the error is oversize. By and large, the Germination in vitro method was an efficient, stable and simple way to judge the pollen viability of cucumber. The component of culture medium is 10% sucrose+ 100mg/L H_3BO_3. If inoculated intraday, collect pollen of fresh abloom flower at 6:00 and if inoculated at the second day, collect before dark.

比较了4种常用的花粉活力测定方法——I-KI染色法、醋酸洋红染色法、TTC染色法和离体萌发法，认为I-KI染色法和醋酸洋红染色法不适于测定黄瓜花粉生活力，TTC染色法虽适用但误差较大，综合考虑各项因素，确定离体萌发法是最准确、简便、稳定的测定黄瓜花粉活力的方法。

In this observational study, 65 children were treated with SLIT with a build-up phase of 11 days, culminating in a peak dose of 300 IR, and followed by a maintenance phase of 300 IR three times weekly. There were 51 boys and 14 girls; age range was 38 to 80 months (median age, 60 months). Allergens used were house dust mites in 42 patients, grass pollen in 11, olive pollen in five, Parietaria pollen in four, and cypress pollen in three patients. Adverse reactions and changes in the treatment schedule were compared in children aged 38 to 60 months vs those aged 61 to 80 months.

在这项观察性试验中，65位接受SLIT的儿童在11天的适应期后，将剂量逐渐调整到最高300 IR，接著以每周3次，每次300 IR的剂量持续接受治疗；试验中包括51位男童与14位女孩，年龄介于38至80个月（平均年龄为60个月）；其中有42位病患以尘蹒、11位以花粉、5位以橄榄花粉、4位以墙草、3位以丝柏作为过敏原；年龄介于38至60个月的儿童，与61至80个月的儿童分成两组比较不良反应发生机率与治疗疗程的改变。

In this observational study, 65 children were treated with SLIT with a build-up phase of 11 days, culminating in a peak dose of 300 IR, and followed by a maintenance phase of 300 IR three times weekly. There were 51 boys and 14 girls; age range was 38 to 80 months (median age, 60 months). Allergens used were house dust mites in 42 patients, grass pollen in 11, olive pollen in five, Parietaria pollen in four, and cypress pollen in three patients. Adverse reactions and changes in the treatment schedule were compared in children aged 38 to 60 months vs those aged 61 to 80 months.

在这项观察性试验中，65位接受SLIT的儿童在11天的适应期后，将剂量逐渐调整到最高300 IR，接著以每周3次，每次300 IR的剂量持续接受治疗；试验中包括51位男童与14位女孩，年龄介於38至80个月（平均年龄为60个月）；其中有42位病患以尘蹒、11位以花粉、5位以橄榄花粉、4位以墙草、3位以丝柏作为过敏原；年龄介於38至60个月的儿童，与61至80个月的儿童分成两组比较不良反应发生机率与治疗疗程的改变。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明：授粉后，花粉随即萌发，花粉管进入羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。

Through comparative analysis on the pollen exine ornamentation of Lycoris we think that the pollen characters of Lycoris is relative steady and basically uniform, the shape of pollen grains are all long sphericity, all species have reticulate ornamentation, but there are large varieties between species in Lycoris on these aspects such as the pollen size , Finely reticulate ornamentation or coarsely reticulate ornamentation,psilate muri or curve muri,having spinulose or not and the spinulose position.

通过对石蒜属花粉外壁纹饰特征的比较分析，认为本属植物花粉特征较为稳定，形态基本一致，均为长球形花粉粒，花粉外壁均为网状纹饰；但在花粉大小、粗网或细网纹饰，网脊平滑或弯曲，有无小乳突或小瘤以及乳突着生部位等方面在种间有明显的变化，可以作为区分种的依据。3。

The degradation of pollen tube RNA in vitro by stylar S-RNase at different temperatures was performed to detect the extent of degradation using the agarose gel electrophoresis. The germination and tube growth of self-pollen and the RNA of self-pollen tube were inhibited and degraded significantly greater than cross-pollen respectively at 10℃ and 25℃, but no significant difference when the temperature rose to 35℃.

10℃、25℃时，花柱S-RNase抑制自花花粉萌发和花粉管生长的程度极显著大于抑制异花花粉的程度；花柱S-RNase降解自花花粉管RNA的程度也明显大于降解异花花粉管RNA的程度；温度升高到35℃时，自花和异花间花粉萌发和花粉管生长被花柱S-RNase抑制的程度不存在显著性差异；花柱S-RNase降解自花和异花花粉管RNA的程度也相似。

The pollen living ability declined with time prolonging and the best condition for pollination was 22~28℃and fresh pollen appearing .By means of benzidine- hydrogen peroxide reaction and aniline blue fluorescence method, showed that the stigma receptivity could teach to 12 days since flowering. Compared with self pollination, the pollen was easily adhered into sigma and the pollen tube was easily entered into style in cross pollination experiment.

通过联苯胺—过氧化氢反应法和苯胺蓝荧光法观察了柱头的可授性、花粉在柱头的黏附、萌发及花粉管的生长情况，结果表明：非洲菊柱头发育初期就具有可授性，可授期达12d ；杂交和自交相比，杂交的花粉比较容易黏附、花粉管进入柱头比较容易，二者存在花粉黏附数量和花粉管进入数量的差异。

Pure pollen from Yunyan 87 diluted with bentonite, flour, GTG powder, skimmed milk powder, bee pollen, soluble starch and talc powder at the proportion of 2:1, 1:1, 1:2 and 1:3 (pollen: diluent v/v), using pure pollen as control.

采用云烟87纯花粉与膨润土、面粉、GTG粉、脱脂奶粉、蜂花粉、可溶性淀粉和滑石粉按体积比2：1、1：1、1：2及1：3比例均匀混合制备成固体介质花粉，以纯花粉为对照，研究介质花粉对云烟87的坐果和种子活力的影响。

The double embryo sac is a new type of variation in rice,chartered with a large embryo sac inlaid with a small embryo sac,overlapping in theirmicropyle part,and with the eggs far from micropyle part.

双套结构胚囊是一种新发现的胚囊，主要特点是含有大小两个相嵌的胚囊和远离珠孔端的卵细胞。

Megaspore development and abortion of"Pingyi Tiancha"Compar-ing with regular developing megaspore of normal M.baccata,the megasporemother cellof"Pingyi Tiancha"could form mono-nucleus embryo sacby perhaps irregular meiosis,then most of sexual MES depauperatedand degenerated,finally aborted,or only a few further developed.Of asexualembryo sac,one or more large cells at the chalazal end of nucellus developed in-to one to more asexual embryo sac initials.After the competition between sexu-al embryo sacand asexual embryosac,most ovules only had one asexual embryo sac matured.

平邑甜茶大孢子的发育和败育与正常发育的山定子大孢子对比，平邑甜茶大孢子母细胞经减数分裂能形成单核胚囊，之后多数有性胚囊萎缩、退化而败育，只有极少数进一步发育；而无性胚囊则从胚珠合点端1个或多个较大的珠心细脆形成并首先发育为一个或多个无性胚囊原始体；经过有性胚囊和无性胚囊以及无性胚囊和无性胚囊之间的竞争，多数胚珠只有一个无性胚囊成熟。

Among which is the mindset, perceptions and moralities of those who accept mini- military tasks for economic gains.

其中最重要的是心态，观念和道德的人谁接受小型军事任务的经济收益。

In time course imaging, activity peaked 2 days after coronary ligation.

在时程成像检测，活性峰值在冠脉结扎后2天。