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胚根     
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  radicle
     The radicle grew and formed plantlet from the budded mature embryos that were cultured on the medium contained 0.5 mg/L 6-BA and 0.2 mg/L NAA.
     培养基中添加0.5mg/L的6-BA和0.2mg/L的NAA能有效促进萌动胚的胚根伸长和发育成苗。
短句来源
     Meanwhile, to rice the value of IC 95 on the bud and radicle were 4.97 ×10 -4 g·L -1 and 5.34×10 -4 g·L -1 respectively.
     对水稻幼芽及胚根生长的IC95值分别为 2× 10 -3g·L-1和 1 2 6× 10 -3 g·L-1;
短句来源
     The concentrations required to reduce growth by 10% of maize radicle of FA, VA and p-HBA, namely ED_(10), are 1.14,3.57,6.30 mmol/L, respectively.
     室内检测阿魏酸、香草酸和对羟基苯甲酸抑制玉米的胚芽和胚根的生长,其抑制根伸长10%的浓度(ED10)分别是1.14,3.57和6.30mmol/L。
短句来源
     According to their inhibitory effect on the radicle growth,the isolates could be divided into five groups(Ⅰ-Ⅴ), whose inhibitory effect on the radicle growth was 14.7%,26.0%,34.7%,45.0% and 68.7%,respectively.
     菌组对胚根生长的平均作用分别为14.7%,26.0%,34.7%,45.0%和68.7%。
短句来源
     But the average root number of treating Trichosanthes radicle with 75mg/kg ABT3 is the best( 5.79). the average root length treating radicle with 50mg/kg ABT3 is the best( 2.40cm).
     而75mg/kgABT_3处理瓜萎胚根,平均根数最高为5.79条,50mg/kgABT3处理胚根平均根长最高达2.40cm;
短句来源
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  embryonic root
     The germination percentage,embryonic root and seedling length of tall wheatgrass(Thinopyrum ponticum) seeds were tested. NaCl,Na2SO4,Na2CO3 and NaHCO3 with eight concentrations(0.2%,0.4%,0.6%,0.8%,1.0%,1.2%,1.4% and 1.6%) were used as the stress factors.
     对高冰草种子在4种盐分NaCl、Na2SO4、Na2CO3、NaHCO3的8个不同浓度(0.2%、0.4%、0.6%、0.8%、1.0%、1.2%、1.4%、1.6%)的胁迫下进行发芽试验,分别观测其发芽情况,胚根和幼苗的生长。
短句来源
     Low comcentration of H2O2(<0.4%)could make the number of embryonic root increase.
     低浓度(小于0.4%)H2O2能够促使侧生胚根的伸长,增加胚根数;
短句来源
     2% concentration has extremely obvious (P<0. 01) action to promote embryonic root growth,8%、6% concentrations evidently (P<0. 05)) restrain elongation of the embryonic root and occuring of the lateral root compared with other concentrations.
     2%浓度水平具有极显著(P<0.01)促进胚根伸长的作用,8%、6%浓度水平显著(P<0.05)抑制胚根伸长和侧根发生。
     8%,6% concentrations evidently restrain spreading of the embryonic root and occurring of the lateral root, they reduce 14. 7% and 21%~ 39. 2%, comparing with control.
     8%、6%浓度水平显著抑制胚根伸长和测报发生,比对照降低14.7%和21.0%~39.2%。
短句来源
     The present study made an observation of the embryonic root growth status of litchi seedlings at the nature bourgeon growing condition and the embryonic roots of seedlings of which one third, two thirds and the whole were cut off and then treated with 400 mg/L, 800 mg/L, 1200 mg/L NAA.
     对荔枝种子自然萌发生长状态下胚根生长发育状况,及荔枝子苗胚根分别切去1/3、2/3和全切后用400mg/L、800mg/L、1200mg/L萘乙酸处理后进行观察。
短句来源
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  embryo root
     When the embryo root grew up to 2? mm,soluble protein increased by 56 88% and phytic acid decreased by 45 99% as compared to before germination When the root was up to 15?
     大豆胚根长度 2mm时 ,可溶性蛋白质增加量和植酸减少量分别为浸泡结束时的 5 6 88%和 45 99% ;
短句来源
     96h after imbibition, more than 90% seeds turned into radicals with visible embryo root There was a peak value of Z+ZR, and iPA.
     α-淀粉酶和蛋白酶活性随种子萌发进程持续增高,在96h时有90%的种子突出胚根,这时Z+ZR和iPA含量出现一个高峰,蛋白酶活性达到最高,而α-淀粉酶活性继续增高。
短句来源
     This demonstrated that DNA replication in embryo root tips cells was subjected to be a compulsory factor for seed germination, whereas endogenous GA triggered DNA synthesis.
     这说明内源GA 是启动番茄种子胚根尖细胞DNA 复制的关键因素,同时也说明番茄根尖细胞DNA 复制是种子发芽的必要条件。
短句来源
     The effect of different constant temperature (20℃, 25℃, 30℃) and changing temperature(20~30℃) on Reaumuria soongorica seed sprouts was studied too. The germination rate and the growth of embryo root are obviously different at different temperature, the best temperature is changing between 20~30℃.
     恒温分别在20℃、25℃、30℃、变温20~30℃的不同温度处理条件对红砂种子萌发和发芽率的影响,在不同温度下,红砂种子萌发率和胚根生长速度明显不同,认为红砂种子最适萌发温度为20~30℃的变温。
短句来源
     The superoxide dismutase(SOD)isozyme of the embryo root of four soybean cultivars and their F2 seeds under normal and salt-stress germination were analyzed.
     对4个大豆品种及其杂种F_2代在无盐及盐胁迫条件下萌发的胚根超氧物歧化酶(SOD)进行分析.
短句来源
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  radicel
     Using the crude toxin, the study investigated the effect of capsicum wilt on the germination of seeds, the growth of seedlings, and the elongation of radicel in three cultivars of pepper, 'Nongchengjiao 2', '0127', and '0171'.
     2.用查彼克液体产毒培养基培养辣椒枯萎病病原菌,取其培养滤液作为粗毒素,测试了毒素液对“农城椒2号”、“0127”、“0171”三个基因型种子发芽、幼苗生长、胚根伸长的作用。
短句来源
     however, only 0.2 g/ml of white birch leaf aqueous extracts had inhibition on radicel growth (p<0.05), and that germination percentage and index of larch seeds were inhibited significantly by 0.1 g/ml of white birch leaf extracts (p<0.05);
     0.2g/ml的白桦树叶水浸液仅显著抑制了胚根的生长,而0.1g/ml的水浸液则显著抑制了兴安落叶松种子发芽率和发芽指数(p<0.05);
短句来源
     Using the crude toxin, the research investigated the effect of Phytophthora capsici on the leaf of pepper, the germination of pepper seeds, the growth of seedlings, the growth of pepper radicel, and the callus of pepper.
     1.用胡萝卜汁培养液培养辣椒疫病病原菌,其培养滤液为辣椒疫病病原菌粗毒素,测定了粗毒素对辣椒叶片、辣椒种子发芽率、辣椒种子胚根生长、辣椒幼苗生长和辣椒愈伤组织的影响。
短句来源
     Radicel and embryo length of larch were inhibited significantly by 0.2 g/ml of bark aqueous extracts and white birch leaf volatiles. 0.01 g/mk 0.1 g/ml and 0.2 g/ml of white birch bark aqueous extracts all had inhibitory effects on radicel growth (p<0.05);
     0.2g/ml的白桦树皮水浸液和树叶挥发物显著抑制了兴安落叶松种子胚根和胚芽的生长,0.01g/ml、0.1g/ml和0.2g/ml的白桦树皮水浸液均显著抑制了胚根的生长(p<0.05);
短句来源
     The plumule and radicel of Astragalus sinicus developed quite well and the fresh weight of seedling reached its maximum at 25 ℃(0.03029 g/plant).
     在25℃下,紫云英的胚芽和胚根均生长良好,种苗全重也达到最大值0.030 29 g
短句来源
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  radicle
The embryo axis length, fresh weight, and protein content remained almost unchanged during the entire period of stratification but increased after radicle protrusion.
      
The capacity for protein synthesis was easily detected since the first days of stratification; its rate did not change until germination and increased after radicle protrusion.
      
The fraction-II comprised highly phosphorescent seeds incapable of radicle protrusion and moderately phosphorescent seeds producing abnormal seedlings.
      
All these processes were similar to those in the axes of intact seeds during stratification until radicle protrusion.
      
The axes excised from the seeds after radicle emergence were insensitive to ABA and grew actively in its presence.
      
更多          
  embryonic root
1.Embryonic root cells from air-dried seeds of Pisum sativum with extremely low water content were investigated by electron microscopy in the state of dormancy.
      
Changes in ultrastructure and transcription induced by elevated temperature in Zea mays embryonic root cells
      
However, extension of the imbibition period results in progressive structural damage to cells of both the embryonic root and the coleorhiza.
      
A fate map of the primary root and root meristem that predicts the developmental destinies of cells within the embryonic root primordium has been constructed.
      
After the division of the initial daughter cells into cortex and endodermis, SCR mRNAs were only found in the endodermis of the embryonic root.
      
更多          
  embryo root
The microscopical observation and karyoltype analysis of embryo root cells of healthy Xingkai Lake pine and Xingkai Lake pine infected byCronartium quercuum were conducted.
      
The results showed that the dividing phase of embryo root cells decreased and the viscidity of cells in dividing phase increased when Xingkai Lake pine was infected byC.
      
Using flow cytometry, nuclear replication activity was investigated in embryo root tips isolated from seeds of the ABA-deficient mutant sitw, the GA-deficient mutant gib-1, and the wild-type (MM) tomato (Lycopersicon esculentum Mill.
      
Observations about the origin of the sheath clarify the reasons for previous interpretations about the putative role of the massive embryo root cap in testa splitting and germination.
      
  其他


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本文报告大豆(品种为“丰地黄”)胚和胚乳发育的过程。大豆胚的发育基本上属十字花型(柳叶菜型)。因为合子首先进行横分裂,结果形成由顶细胞和基细胞构成的二细胞胚。顶细胞首先进行纵裂,成为胚体细胞的基础,基细胞发育成胚柄,而不参加胚体的形成。大豆胚柄由多列细胞組成,而十字花型(柳叶菜型)的典型代表 Capsella bursa-pastoris 和 Ludwigia palustris 的胚柄由一列细胞构成,因此与它们有明显区别。在由基细胞发育成由多列细胞粗成的胚柄过程中,观察到细胞的液泡化和后来液泡消失的过程。大豆传粉后两昼夜可见合子分裂形成二细胞胚。传粉后三天发育成3—8个细胞的胚。传粉后五天形成约由30—40个细胞组成的小圆球胚。传粉后八天发育成由更多细胞组成的大圆球胚。到传粉后十二天可以看到顶端扁平的胚,以及子叶、胚根和胚轴的分化。大豆胚乳的发育属核型。由受精的极核分裂成游离胚乳核,游离核以有丝分裂方式繁殖。它的最初几次有丝分裂是同时进行的,分裂速度与胚细胞分裂速度大体上相同。在胚乳发育过程中我们未见到无丝分裂现象,但尚不能断定在大豆胚乳发育过程中没有无丝分裂过程,因为我们固定材料时间间隔较长。...

本文报告大豆(品种为“丰地黄”)胚和胚乳发育的过程。大豆胚的发育基本上属十字花型(柳叶菜型)。因为合子首先进行横分裂,结果形成由顶细胞和基细胞构成的二细胞胚。顶细胞首先进行纵裂,成为胚体细胞的基础,基细胞发育成胚柄,而不参加胚体的形成。大豆胚柄由多列细胞組成,而十字花型(柳叶菜型)的典型代表 Capsella bursa-pastoris 和 Ludwigia palustris 的胚柄由一列细胞构成,因此与它们有明显区别。在由基细胞发育成由多列细胞粗成的胚柄过程中,观察到细胞的液泡化和后来液泡消失的过程。大豆传粉后两昼夜可见合子分裂形成二细胞胚。传粉后三天发育成3—8个细胞的胚。传粉后五天形成约由30—40个细胞组成的小圆球胚。传粉后八天发育成由更多细胞组成的大圆球胚。到传粉后十二天可以看到顶端扁平的胚,以及子叶、胚根和胚轴的分化。大豆胚乳的发育属核型。由受精的极核分裂成游离胚乳核,游离核以有丝分裂方式繁殖。它的最初几次有丝分裂是同时进行的,分裂速度与胚细胞分裂速度大体上相同。在胚乳发育过程中我们未见到无丝分裂现象,但尚不能断定在大豆胚乳发育过程中没有无丝分裂过程,因为我们固定材料时间间隔较长。在较大圆球胚时胚乳开始形成细胞壁,细胞壁的形成过程自胚端开始,逐渐及于合点端。在子叶分化时胚乳细胞壁开始破坏,其过程也是自胚端(珠孔端)开始,逐渐及于合点端。在胚乳细胞退化时看到有巨大核和比正常胚乳核小的、梭形退化的胚乳核。

Root development of the intact or excised embryos of Pinus koraiensis Sieb. et Zucc., exhibited discrepant morphological differentiation under experimental condition. That development of the root enclosed in intact megagametophyte grown in the sterile culture medium without sugar, although it showed more rapid elongation, essentially resembled that of the soil-grown seedlings. However, morphological variations existed in the root growth of the excised embryo after one week's culture. It manifested particularly...

Root development of the intact or excised embryos of Pinus koraiensis Sieb. et Zucc., exhibited discrepant morphological differentiation under experimental condition. That development of the root enclosed in intact megagametophyte grown in the sterile culture medium without sugar, although it showed more rapid elongation, essentially resembled that of the soil-grown seedlings. However, morphological variations existed in the root growth of the excised embryo after one week's culture. It manifested particularly in the development of the coleorhiza-like structure. As the root elongated, it first appeared as a reddish mass covering the root cap. Gradually this tissue mass became loosened and separated from the root cap. Finally it was torn and pushed aside by the elongated root. In the further growth of excised embryos, seven to eight layers of loose tissue which arose from the subepidermal cells were developed around the root tip. Later, the surface layer assumed the appearance of rhizoids and was subsequently shed. During further extention of the first root, zonation of the root apex became inconspicuous. The meristem became reduced in extent; only a layer of initial cells existed between the root cap and the hypocotyl. Meanwhile the root cap became reduced to only a few cell layers, some of which eventually degenerated. After six weeks in culture, the meristematic tissues of some of the root apexes eventually became parenchymatous and maturation of short tracheids extended up to 100--200μ from the apex. Ultimately root ceased to elongate and became senile.

离体的与带有雌配子体的紅松(Pinus koraiensis Sieb.et Zucc.)胚胎,在人工培养下,其根部的生长可表現出各种形态解剖上的分化。普通带有雌配子体的成熟胚的下胚軸基部,除了生长特別迅速以外,其余都比較正常,內部的分化大致也与一般自然生长下的松属幼苗相似。但是完全离体的胚胎,在人工培养一星期后,即可显出各种变异,其中胚根鞘的結构表現得特別显著。这种在胚根伸展时多形成紅褐色的一团,复盖在最前端;里面逐漸与根冠分离,外部变为相当疏松。不久在初生根伸长时即被穿破或推向一边。而初生根的前端周围則又由皮层細胞逐漸轉变成7—8层細胞寬的疏松結构层;在其外面不断的成条状剝落。离体胚初生根继續向前伸长时,根端內的分区逐漸变为不明显;分生組織減少,原始细胞成单层細胞,位在下胚軸的基部。同时根端的根冠細胞退化,只剩了几层細胞;有的不久完全消失。培养六星期后,有些根端的分生組織,逐渐轉变为薄壁组織;分散的管胞十分靠近根的前端。最后根端的组织分化衰退而趋向死亡。

The present paper reports the experiments on 10 single hybrids of heterosis maize and their parents.During germination of seeds (including embryo bud,embryo axis,embryo root) using embryo as material,we determined content of DNA,ENA and total N,and we calculated the cell number,observing relative sections of embryo.llesults obtained showed that content of ENA,DNA and total N in embryo of heterosis hybrid increases more sharply compared with that of its parent,the result being identical.From the observation of...

The present paper reports the experiments on 10 single hybrids of heterosis maize and their parents.During germination of seeds (including embryo bud,embryo axis,embryo root) using embryo as material,we determined content of DNA,ENA and total N,and we calculated the cell number,observing relative sections of embryo.llesults obtained showed that content of ENA,DNA and total N in embryo of heterosis hybrid increases more sharply compared with that of its parent,the result being identical.From the observation of tissue sections of single hybrid 328 and its parent V 8322,Hung Xiao 162 it may be seen that the tissue of hybrid embryo differentiates faster,and organs differentiate clearly and develop well.All this demonstrates that hybridization has deep influence on the development of embryo and content of RNA,DNA in embryo,and there exists positive relationship between hybridization and the development of embryo and content of ENA,DNA in embryo.

对10个具优势的玉米单交种及其亲本进行试验。取种子开始萌发的胚(包括胚芽、胚轴和胚根)进行RNA、DNA和全氮的定量测定。做了胚胎细胞数的计测和328单交种及其亲本胚胎石蜡切片的观察。试验结果表明,优势杂种胚中RNA、DNA和全氮含量均比其亲本胚中的含量高。计测胚胎细胞数也表明,杂种比其亲本胚胎的细胞数有明显的增多。从328单交种及其亲本的石蜡切片观察看出,杂种胚胎组织分化提前,器官分化清晰,发育得好。

 
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