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germination rates
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  发芽率
     When the temperature was 3℃,the germination rates of 4 cultivars were 118%~162%, and that of the others were 14%~78%.
     在3℃条件下,4个品种的发芽率为11 8%~16 2%,其余品种在1 4%~7 8%之间;
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     When the temperature was 9℃,the germination rates of 2 cultivars were 40.6% and 46.1% respectively, and that of the other cultivars were 126%~248%.
     低温对发芽有抑制作用,在9℃条件下,2个品种的发芽率为40 6%和46 1%,其余品种在12 6%~24 8%之间。
短句来源
     ②The difference of the pollen germination rates of different inbred lines is highly significant under the combination between FT(15℃,12℃,9℃) and GT(24℃,18℃,15℃,12℃,9℃) excepting FT15℃/GT24℃.
     ②不同的FT和GT组合下,自交系间花粉的发芽率除FT15℃/GT24℃下差异不显著,其他FT(15℃、12℃、9℃)和GT(24℃、18℃、15℃、12℃、9℃)的各组合温度下,都达到了极显著差异。
短句来源
     The germination rates of Zhenshan 97B and AAV002863 were 79.7% and 30.1%, respectively, and those of the DH population ranged from 0% to 100% at 15℃ for six days.
     15℃下处理6d,两亲本珍汕97B与多年生稻AAV002863的发芽率分别为79.7%和30.1%,DH群体间的发芽率变化在0%~100%。
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     the average germination rates ofthe seeds of Larix that dealed with fresh water is 34.3± 1.04%.
     清水对照的落叶松种子平均发芽率为34.3±1.04%。
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  萌发率
     After one-year conservation in LN2 germination rates of H29 H50 H5 pollen were respectively 21.027% 23.136%, 1.623% higher than before storage.
     H5、H29、H50号花粉在液氮中保存1年时,萌发率均比保存前分别高出21.027%、23.136%、1.623%。
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     The results revealed that with Cu~(2+)、Zn~(2+)、Cd~(2+) concentrations reaching 100 mg/L,both the seed germination rates and young-seedling heights of P.pratensis declined to some extent and their decrements increased as the concentrations increased.
     结果表明,当Cu2+、Zn2+、Cd2+的浓度达100 m g/L时,早熟禾的种子萌发率、幼苗株高均有所下降,并随着胁迫浓度的增加,下降幅度增大;
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     The pollen germination rates of treatment 2, 4, 5, 6 and 7 are improved, and the highest germination rate reaches 94.7%, which is 19.7% higher than that of the control.
     试验处理2、3、4、5、6、7中有5个处理提高了花粉萌发率,最高值达到94.7%,比对照高出19.7%。
短句来源
     Germination rates of eggplant and hot pepper seeds were 87%, 15% and 83.3%, 0% separately when room temperatures were from 25-27℃.
     在25-27℃室温下,茄子和辣椒的萌发率分别是87%、15%、83.3%及0%。
短句来源
     Periodic alternation of temperature treatment,that is 20℃(5 d)/30℃ (10 d),20℃(5 d)/10℃(10 d) and 20℃(5 d)/35℃(10 d)/20℃(5 d)/10(10 d),germination rates were 54.5%,20%,and 35 5% respectively.
     周期变温组 2 0℃ ( 5d) / 35℃ ( 1 0 d)、2 0℃ ( 5d) / 1 0℃ ( 1 0 d)、2 0℃ ( 5d) / 35℃ ( 1 0 d) / 2 0℃ ( 5d) / 1 0℃ ( 1 0 d)的萌发率分别为 54.5%、2 0 %、35.5%。
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  “germination rates”译为未确定词的双语例句
     Under the concentration 0.5~40 mg/L,JP lowered the average germination rates of seeds of Oriza sativa, Phaseolus aureus, and Brassia chinensis with 9%,9%,7%than the control.
     而 JP在 0 .5~ 40 mg/L范围内对实验物种子水稻、绿豆、大豆的发芽有明显的抑制作用 ,抑制率最高分别为 9%、9%、7% .
短句来源
     The results showed that the rooting and germination rates of the mother vine were higher when the soil PH value was 7.0 and the length of the mother vine was 30 cm.
     结果表明:当土壤pH值为7.0、母蔓长度为30 cm时,母蔓在育苗后不同时间的出根、出芽率较高。
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     H_2O_2 was a new effective agent for stimulation the oospore germination of Phytophthora drechsleri,Higher germination rates were obtained from oospores treated with H_2O_2 than that with KMnO_4.Treated with KMnO_4 and H_2O_2 also prevented the germination of residual mycelial fragments and hyphal swellings in oospore suspension.
     H_2O_2是本研究首次报道的一种刺激掘氏疫霉卵孢子萌发的处理剂,其效果略优于KMnO_4。 用KMnO_4和H_2O_2处理均可有效地抑制卵孢子悬浮液中菌丝片段及菌丝膨大体的萌发生长。
短句来源
     1. Effects of salt stress on the germination of different winter wheat genotypes The germination of Xiaoyan6 and NR9405 was not inhibited by stress of 0~150mmol/L NaCl solution concentration, and the salt concentration (50~100mmol/L) even could improve the germination of Shaan229 and RB6. Xiaoyan6 and NR9405 had higher germination rates than Shaan229 and RB6 under 0~250mmol/L NaCl.
     1.NaCl胁迫对小麦种子萌发的影响0~150mmol/LNaCl处理对小偃6号和NR9405发芽抑制作用较小,对陕229和RB6发芽则有一定促进作用。
短句来源
     RESULTS:30 days later,under the condition of 4 ℃ and 15 ℃,the germination rates of Panax quinquefolium seed were 91% and 82%,respectively,and the viability of glucose 6 phosphdehydrase was enhanced simultaneously.
     结果 :Na N3 处理的西洋参种子在 4℃和 15℃条件下 ,3 0 d后的革发率分别为 91%和 82 % ,两种条件下均提高了 G6PDH的活性。
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  germination rates
The germination rates of cryopreserved and control (nonfrozen) seeds did not differ and remained as high as 100%.
      
The toxic effects of Cd(NO3)2, Pb(NO3)2, Ni(NO3)2, and Sr(NO3)2 were estimated from the germination rates of maize (Zea mays L.) caryopses following two-day incubation with these salts.
      
Germination rates of seeds after their exposure to liquid nitrogen were species-depended and could be either higher or lower than in the unfrozen control.
      
GmSGR was overexpressed in Arabidopsis and the germination rates of the transgenic seeds were significantly higher than that of the wild type seeds under higher concentrations of ABA and glucose respectively.
      
However, the germination rates of the transgenic seeds were lower than that of control under salt stress.
      
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During the last two years (1962 & 1963), 16 chemicals including 28 concentrations have been tested for the control effect of stripe rust (Puccinia glumarum Erik. & Henn.) of winter wheat. Results of these experiments showed that in comparing with 0.5% sulfanilic acid spray which was previously demonstrated to be an effective chemotherapeutant against stripe rust, the following sprays namely 0.3 & 0.5% Min-Nung No. 5, 1:600 & 1:1000 dilutions of sodium fluoride, 1:600 dilution of sodium fluoro-silicate, 0.5%...

During the last two years (1962 & 1963), 16 chemicals including 28 concentrations have been tested for the control effect of stripe rust (Puccinia glumarum Erik. & Henn.) of winter wheat. Results of these experiments showed that in comparing with 0.5% sulfanilic acid spray which was previously demonstrated to be an effective chemotherapeutant against stripe rust, the following sprays namely 0.3 & 0.5% Min-Nung No. 5, 1:600 & 1:1000 dilutions of sodium fluoride, 1:600 dilution of sodium fluoro-silicate, 0.5% sodium sulfanilate, 1% zinc sulfanilate, 1% nickel sulfanilate, 0.1 & 0.2% nickel chloride, 0.2% nickel fluoride and 0.2% nickel acetate all decreased the severity of stripe rust by more than 10%; While 1% fluoro-barium, 1% ferric sulfanilate, 0.1 & 0.2% nickel sulfate, 0.1% nickel acetate and 0.5% ferric sulfanilate surpassed 0.5% sulfanilic acid by 1-10% in effectness. Other applications appeared less effective or even ineffective. Greater efficacy of rust control on leaves always correlated with the increase of the weight per 1000 kernels by 5-20%. There was no evidence for the correlation between rust control and the number of grains per 100 spikes. Increases of 10-30% in yield were obtained in following applications: 1.0% sodium sulfanilate, 0.5% formulae of fluorobarium, 0.3 & 0.5% Min-Nung No. 5, 0.5% ferric sulfanilate and 0.5% sulfanilic acid. 0.1% ferric sulfanilate, 0.5% zinc sulfanilate, 0.5% nickel sulfanilate, 0.1% nickel acetate and 1:1000 dilution of sodium fluoro-silicate increased the yield by 10-20%. In other applications owing to the plant injury caused by the spray, no increasing or even decreasing in yield were observed. The plant injury produced by some applications such as fluorine compounds and others has caused the shrinkage of grains and therefore decreasing chiefly the weight of grains and also reducing eventually the grains per spike. In the case of heavy injury the germination rate of these shrinking seeds was also affected. It was shown that the sodium fluoride caused more injury than the sodium fiuoro-silicate. Applying the 1:600 dilution of the later with 2 or 3 successive sprays before the blooming period cauld have been more advantageous and of practical value. According to the analysis of the annual occurence of stripe rust in the districts of the middle-south part of Honan province it is suggested that the time suitable for 3 successive applications of chemical spray should be at the beginning of booting, beginning of heading and blooming period of wheat. After the development of kernels, the chemical application appeared ineffective for stripe rust control. When the air temperature during early spring is relatively high and thus the stripe rust pustules increase rapidly, it is necessary to add a supplimentary spray at the jointing stage of wheat for satisfactory control.

1962年和1963年,分别在信阳和郑州进行三次田间药剂防治小麦条銹病試驗結果表明:在叶面防治效果方面,超过0.5%对氨基苯磺酸10%以上的有0.5%与0.3%“閩农五号”、氟化鈉600倍、1000倍、氟矽酸鈉600倍、1%氨基苯磺酸鈉、1%氨基苯磺酸鋅、1%氨基苯磺酸鎳、0.1%与0.2%氮化鎳、0.2%氟化鎳及0.2%醋酸鎳等12种;超过1—10%或基本上相等的有1%常州氟鋇、1%氨基苯磺酸铁、0.1%与0.2%硫酸鎳四种;其中药效較好而又无药害、比对照增产10—35%的有1%氨基苯磺酸鈉、0.5—1%常州氟鋇、0.3—0.5%“閩农五号”、0.5%氨基苯磺酸铁及0.5%对氨基苯磺酸等;药效尚好而药害輕微、比对照增产10—20%的有1%氨基苯磺酸铁盐、0.5%鋅盐、0.5%鎳盐、0.1%醋酸鎳及氟矽酸鈉600倍等。田間药剂防治的适当时期和次数,根据病情动态和噴药效果分析,在河南省中南部地区建議以小麦的孕穗初、孕穗末或抽穗初、揚花期三次噴药为最好,灌浆以后噴药一般不起作用,如早春气温较高,病情上升迅速,則可在拔节期加噴一次。

The present paper deals with the physiological activity of the leaf extract of Calonyction aculeatum(Linn)House and its promoting effect on tuber production of sweet potato. Calonyction aculeatum is a ornamental species of Convolvulaceae. In the leaf extract it contains physiologically active substance which plays many regulating and controlling effects such as stimulating root development of sweet potato cuttings, increasing germination rate of rice seeds, Promoting growth of rice seedlings and increasing...

The present paper deals with the physiological activity of the leaf extract of Calonyction aculeatum(Linn)House and its promoting effect on tuber production of sweet potato. Calonyction aculeatum is a ornamental species of Convolvulaceae. In the leaf extract it contains physiologically active substance which plays many regulating and controlling effects such as stimulating root development of sweet potato cuttings, increasing germination rate of rice seeds, Promoting growth of rice seedlings and increasing number of peanut flowers. Deta of biological assay shows the physiologically active substance is neither gibberellina nor auxins. On grafting of Calonvction aculcatum to the vine of sweet potato, it will. be interestingly to see that the tuber production in then highly promoted. However while dusting this leaf extract on the leaf surface of sweet potato race "Little five teeth" under appropriate dilution and suitabie time of application, as well as on grafting, where a similar result would be obtained, i, e, the normal course of tuber development has been subjected under some profound influence and it appears as if the tuber is firstly inhibited and then accelerated. The correlationship between inhibition and acceletation and their transversion plays the role of tuber developmnt and the tuber production is thus increased. In these tubers the starch and the total sugar contents are promoted, the dry weight is higher up and the quality, is therefore improved. The strength of the physiological actvity of the leaf extract is calibrated by special method of assay, the so called "Keng rice root suppresion method" and the unit is called "Keng rice unit". Because the rice should be race of subspecies Keng Ting of Oryza sativa Linn. In field spray different race of Crops requires different strength of activity of the leaf extract. Upon repeated tests in field it is worthy to say that 0.5—1.0 "Ki-Keng unit" is the satisfactory strength to induce potato race "Apple red" and sweet potato race "Victory 100" to give excellent yields of tubers. To the former it is better to spray at the initial stage of flowering and to the latter it is suitable to spray at the time of their leaves enveloping the plough rows.

月光花叶提取物中含有生理活性物质,对甘薯的插枝发根,水稻的种子发芽和幼苗生长以及对花生的开花数能起调控作用。它不属于赤毒素及生长素类物质。以适当浓度喷洒甘薯“小五齿”叶面,对块根发育有很大影响,重现了甘薯与月光花嫁接后薯块发育过程中所出现的先抑制后促进的抑促相关规律及其转化过程,并且获得增产;薯块的淀粉含量和(?)醣量增加,晒干率提高,品质有所改善。重复验证了稻根抑制法标定叶提取物的生理活性含量在大田生产上的应用价值,证实了以0.5—1“吉粳单位”浓度在甘薯“胜利百号”封行期,马铃薯“苹果红”始花期进行叶面喷洒都能获得增产。

Since 1973, reciprocal crosses of 21 combinations between 26-genomes (Gossypium Jiirsutum, G. barbadense) and 13-genomes (G. arboreum; G. herbaceum) were tested to overcome the low seed set of interspecific hybrids and the sterility of F1 plants. The results of the experiments are as follows:(1) The aqueous solutions of GA 50 ppm and NAA 40-320 ppm were alternatively sprayed on the hybrid bolls at the very beginning of the crosses once per day, and 5 times for each was appropriate. The boll set reached more...

Since 1973, reciprocal crosses of 21 combinations between 26-genomes (Gossypium Jiirsutum, G. barbadense) and 13-genomes (G. arboreum; G. herbaceum) were tested to overcome the low seed set of interspecific hybrids and the sterility of F1 plants. The results of the experiments are as follows:(1) The aqueous solutions of GA 50 ppm and NAA 40-320 ppm were alternatively sprayed on the hybrid bolls at the very beginning of the crosses once per day, and 5 times for each was appropriate. The boll set reached more than 90%. Average of well differentiated hybrid embryos per boll was 2.3-3.6.(2) The small hybrid embryos were cultured in vitro, and plantlets were grown in the test tubes. The survival rate of plantlets in test tubes was 80%, and that of which was 40% when transfered in pots during the spring and summer experiments in 1975. A total number of 66 plants of interspecific hybrids between 26-genomes and 13-genomes were obtained by this method. These plants showed morphologically typical interspecific hybrid features. Both male and female gametes were sterile, and the chromosome number of the root tip cells was 39.(3) In 1975, 10 ppm colchicine was added to the medium in order to increase the effect of colchicine treatment, to advance its date, and to simplify its procedures. Colchicine treatment was carried throughout the culture period. The hybrid plantlets, growing very well in tubes, had sturdy roots and stems, and dark green leaves. The survival rate in the test tube and that of being transplanted were higher than those in the absence of colchicine treatment. The rate of fertility restoration of the F1 plants was 100%. F1 plant were planted in pots more than 3 months in winter. Average of bolls per plant: 4. Average of seeds in large size per boll: 4.8. Germination power of seed: strang. Germination rate: more than 95%. Crosses could be done in the same year by this method fertile F1 plant obtained, and F2 seeds from F1 plant or seeds of backcross received. In the following year, observations and selections, could be started in field.

三年来,我们用陆地棉、海岛棉为一方与中棉、草棉为另一方进行正反交,研究克服杂交不亲和性和F_1不育性的有效方法。重点组合的试验结果表明:(1)喷GA 50ppm、NAA40—320ppm各5次能使杂交结铃率达90%以上。铃大小和亲本自交铃相同,平均每铃有分化正常的杂种胚2.3—3.6个。(2)杂种胚进行离体培养,试管成活率达80%以上,移栽成活率40%以上。得到了陆地棉和中棉、海岛棉和中棉等5个杂交组合开花的杂种植株66株。(3)把10ppm的秋水仙碱加入培养基,在培养杂种胚的同时进行处理,使F_1的育性恢复株率达100%,冬季三个多月在温室盆栽,平均每株收铃4个,平均每铃有大籽4.8个。种子发芽势强,发芽率达95%以上。采用上述方法可以作到当年杂交、当年得到可育的F_1植株,并在F_1植株上收到大量F_2种子或回交一代种子。第二年即可在田间对F_2植株进行研究和选择。

 
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