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period of dormancy
相关语句
  休眠期
     2. By bud (terminal and axillary bud) cultureComparison with 7 combinations of culture midium ACM+BA0.3-0.5 mg/1+NAA0.02-0.05mg/1+Sucrose 2% was proved to be the optimum combination while the best time for bud excised from moth tree was shown first in the period of bud break and then the period of dormancy.
     通过芽培养诱导再生植株,是以顶芽腋芽为材料,利用7个组合培养基试验比较,诱导芽分化最佳培养基为ACM+BA_(0.3-0.5)mg/l+NAA_(0.02-0.05)mg/l+蔗糖2%; 适宜取材期为萌动期,其次是休眠期
短句来源
     ④The phenomenon of the plasmolysis generally appears in the cells during the period of dormancy.
     ④在休眠期,细胞普遍产生质壁分离现象。
短句来源
     In order to find out a suitable cultivated method in greenhouse, from 1997 to 1999, in the greenhouse many researches related to critical technology of the kind of grape' s cultivation have been done, such as the situation of nutrient level before dormancy, cropping in the dormant period , bud body' s germination after the period of dormancy, the regulation of vegetative growth , how to improve the economic trait of the tree and so on .
     为了给日光温室内栽培的90-1葡萄配套“良法”,于1997-1999年,对日光温室内90-1葡萄休眠前营养水平的提高、休眠期树体修剪、休眠后芽体萌发、温室内树体营养生长的控制及提高果实经济性状等一系列关键技术进行研究,总结出90-1葡萄温室高效栽培技术。
短句来源
     The zygote undergoes a long period of dormancy.
     卵细胞受精后则要经过较长的休眠期
短句来源
  “period of dormancy”译为未确定词的双语例句
     Changes of Protein in Tubers During Period of Dormancy Release in the Cultivar Zhongshu3
     中薯3号马铃薯块茎休眼解除过程中蛋白质变化的研究
短句来源
     The contents of the mineral nutrition(K Ca Mg Cu Fe Mn Zn)in branches and leaves of walnut(including Xinjiang-genian walnut and Fenyang-mian walnut) were measured during the period of dormancy and growth, and the activities of SOD, photosynthetic rate in the leaves were also measured during the period of grow, and analyzed the correlation among them were analyzed .
     本试验以新疆隔年核桃、汾阳绵核桃为试材,通过对其年周期中K、Ca、Mg、Cu、Fe、Mn、Zn七种矿质元素代谢及其与SOD酶活性、光合速率相关性分析,结果显示:
短句来源
     4. With chilling requirement increasing, O2- content rose constantly. H2O2 content was lower in the former period of dormancy, and H2O2 content rose constantly in the later period. But the contents of the two all fell down sharply during the period of breaking dormancy.
     4.随低温累积量增加,O_2含量逐渐增加,H_2O_2含量在休眠前期含量较低,随后逐渐增加,两者含量均于休眠解除时迅速下降。
短句来源
     3. The activity of SOD had a flood tide in the former period of dormancy, then kept a decrease continually, after dormancy being broken the SOD activity increased rapidly.
     3.自然休眠前期SOD活性出现一个高峰,随后一直呈下降趋势,在自然休眠解除期SOD活性迅速升高。
短句来源
     MDA content was higher in the former period of dormancy, and MDA content descend constantly in the later period.
     含量逐渐增加; 自然休眠开始时,供试品种体内MDA含量较高,自然休眠期间下降。
短句来源
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  相似匹配句对
     On Legal Period
     法律期间制度的功能与建构
短句来源
     the inherited period.
     承袭期三个阶段。
短句来源
     The period is the beginning of it.
     新时期以前,是张孝祥研究的发轫时期。
短句来源
     The period of Franklin D.
     富兰克林 D.
短句来源
     Sex dormancy
     怎样走出性的“休眠期”?
短句来源
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  period of dormancy
After a long period of dormancy, Darwin's theory of sexual selection in general, and mate choice in particular, now represents one of the most active fields in evolutionary research.
      
weak growth caused by an incomplete period of dormancy.
      
To study the effect of anhydrobiosis on the rotifer life cycle, we dried a bdelloid species, Adineta ricciae, and determined the life-history traits of 1) the rehydrated animals and 2) the offspring produced after a period of dormancy.
      
These buds developed into shoots to give multi-stem plants following a period of dormancy, which was overcome with GA3 (gibberellic acid) treatment prior to planting.
      
Only in the coldest period of dormancy (November-March) the tissue of testicular follicles ceases to be active.
      
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The Sclerotinia disease of the rape plant is widely distributed in 19 provinces in China. It is more prevalent and destructive in the Yang-Tze Valley and the South-Eastern coastal provinces. These regions are characterized by the concurrence of the relatively cool temperature (around 15℃.), the abundant rainfall (month average exceeds 100 mm.), and the susceptible stage of the host plant (usually during the blooming period). Sclerotinia sclerotiorum has been found attacking 71 species of economic plants of 19...

The Sclerotinia disease of the rape plant is widely distributed in 19 provinces in China. It is more prevalent and destructive in the Yang-Tze Valley and the South-Eastern coastal provinces. These regions are characterized by the concurrence of the relatively cool temperature (around 15℃.), the abundant rainfall (month average exceeds 100 mm.), and the susceptible stage of the host plant (usually during the blooming period). Sclerotinia sclerotiorum has been found attacking 71 species of economic plants of 19 families. Beside the rape plant, peanut, soybean, and sunflower, the majority of the hosts are vegetables and herbaceous ornamental plants. In the host range, there are 13 species not hitherto reported; however, there are also 5 species of familiar plants which have been listed as hosts in other countries are not affected in China. No definite period of dormancy appeared to be necessary for the production of apothecia, but the temperaure reguirement for the sclerotial germination was found very narrow. They germinated best in moderately cool temperature (around 15℃.) in moist sand., The sclerotia raising from single spore cultures germinated very slowly and meagrely, while those from the parent mass culture germinated rather quickly and abundantly, a phenomenon pointing to the facultative heterothallic nature of the fungus. The ascospores have been found to germinate under a wide range of conditions. They germinated quite well on dry slide under high relative humidity. It may thus be justified to assume that the ascospores can be carried in a viable condition to a considerable distance by wind. Precentages of their germination under a temperature range of 5—30℃. exceeded 50% in less than 24 hours, being highest at 5—10℃. The pH range for mycelial growth was found to be pH 3—9, with an optimum around pH 5—8. High relative humidity (over 85%) and a supply of pectinase from diseased tissues were necessary for its infection. Flower petals of the rape plant have been found most susceptible to attack by the ascospores, while sound leaves were resistant to attack unless they had been chilled. A sudden drop of temperature, poor drainage, and especially lodging of the rape plants during their blooming stage have been observed to be predisposing under natural conditions. Ordinary, there are two crops of apothecia in a year, one in the Autumn and the other in the next Spring, the second crop should be considered as the major one. A rotation of rice with the rape plant and a big scale control campaign in vast area will materially reduce the source of infection, and thereby decrease incidence of the disease. Since the infection is dependent chiefly upon the number of sclerotia that will persist in the soil and the production of apothecia in the blooming period, epedemics may be forecasted on the basis of weather conditions prevailing at various times of the year. The facts that abundant Summer rainfall promotes decay of the sclerotia, and abundant rainfall in the the Autumn increases their number, may be considered as criteria for long term forecasting. Abundant rainfall in the early Spring and cold wind during the blooming period which promotes the germination of the sclerotia, the infection of either the ascospores or the mycelium, and the lodging and susceptibility of the host, may be based for short term forecasting.

1.油菜菌核病在我国的分布共有19省,而以长江流域及东南沿海各省为主。它的分布区域决定于較低的温度(15℃左右)、充沛的雨量(月平均超过100毫米)及寄主易感阶段(一般为花期)三者的密切配合。在秦岭以南的早春和深秋以及松花江流域的夏季,其配合是符合于这种情况的,因此发病較为普遍而严重。秦岭以北,包括华北与西北,上述三方面的配合基本上是不协調的,因此菌核病很少发生。2.它在我国的寄主共有19科71种,除油菜、花生、大豆及向日葵等油料作物外,主要为害蔬菜及草本观赏植物,因此花园菜圃是此菌潛伏埸所之一。在我国所发现的寄主中,有13种是未經报导过的,但也有5种常見的寄主在我国尙未见其被害。3.Sclerotinia sclerotiorum的各个发育阶段对于外界条件的要求是不一致的。菌核不需要休眠,但它发芽的要求很严格,只有继續在低温高湿的土壤中约一月左右才能盛发。它从单子囊孢子菌系所产生的菌核发芽率很低,而且发芽很缓慢,说明此菌是一个较弱的(己廾)宗配合菌类。子囊孢子发芽的要求最宽,它有耐干耐寒的能力。在5—30℃之间,24小时内的发芽率都能超过50%,而在5℃或10℃的温度下发芽率最高,而且发芽最快。它在接近饱和...

1.油菜菌核病在我国的分布共有19省,而以长江流域及东南沿海各省为主。它的分布区域决定于較低的温度(15℃左右)、充沛的雨量(月平均超过100毫米)及寄主易感阶段(一般为花期)三者的密切配合。在秦岭以南的早春和深秋以及松花江流域的夏季,其配合是符合于这种情况的,因此发病較为普遍而严重。秦岭以北,包括华北与西北,上述三方面的配合基本上是不协調的,因此菌核病很少发生。2.它在我国的寄主共有19科71种,除油菜、花生、大豆及向日葵等油料作物外,主要为害蔬菜及草本观赏植物,因此花园菜圃是此菌潛伏埸所之一。在我国所发现的寄主中,有13种是未經报导过的,但也有5种常見的寄主在我国尙未见其被害。3.Sclerotinia sclerotiorum的各个发育阶段对于外界条件的要求是不一致的。菌核不需要休眠,但它发芽的要求很严格,只有继續在低温高湿的土壤中约一月左右才能盛发。它从单子囊孢子菌系所产生的菌核发芽率很低,而且发芽很缓慢,说明此菌是一个较弱的(己廾)宗配合菌类。子囊孢子发芽的要求最宽,它有耐干耐寒的能力。在5—30℃之间,24小时内的发芽率都能超过50%,而在5℃或10℃的温度下发芽率最高,而且发芽最快。它在接近饱和的相对湿度中,并不需要一层水膜也能发芽。因此,推论它有一定距离的气流传播可能性。菌絲的要求介于两者之间,它对酸硷的适应范围很广(pH3—9,最适为pH5—8)。它对温度的要求和对子囊孢子发芽的相同。其侵染及生长最主要的条件为高湿度(相对湿度高于85%)及足够的果胶酵素。4.油菜易感的阶段为花期。花冠最容易感染,衰老的叶片及受冻后的嫩叶也容易感病。通过这些桥梁,进而侵染莖稈。春季的寒流,后期的漬水和倒伏,造成发病的小气候;鼓励子囊孢子的发芽与侵入和菌絲的侵染与发展。因此,是此病猖獗的关键。5.子囊孢子是此病主要的而且是首次侵染源。菌核每年产生两次子囊盘,一次在深秋,是次要的;一次在早春,是主要的。菌核的潛伏埸所为:本田、种子间、花园、菜圃、打谷埸及堆肥中。水旱轮作可以消灭菌核;大面积联防可以减少侵染源。6.夏季的雨量丰富,使田间的菌核数下降;相反,深秋的雨量丰富,使菌核数增加;因此,前一年的夏季和秋季的雨量,可以用作长期测报的根据。本年早春的雨量丰富,促进菌核的发芽;花期的寒潮,后期田间渍水,植株倒伏,都使寄主易感,并鼓励子囊孢子的发芽侵入及菌絲的侵染与发展,是造成当年猖獗的主要原因,因此可以用为短期测报的依据。

The poor germination of Anthocephalus chinensis soon after picking usually hindered rapid afforestation of this economic plant. Previously, we have shown that seeds of A. chinensis have a period of dormancy and contain some inhibitory substances which can inhibit the germination of seeds of other species. To study the nature of such inhibitory substance, seeds were first separated from other parts of fruit after collection. These two parts were then separately dried, powdered and extracted successively...

The poor germination of Anthocephalus chinensis soon after picking usually hindered rapid afforestation of this economic plant. Previously, we have shown that seeds of A. chinensis have a period of dormancy and contain some inhibitory substances which can inhibit the germination of seeds of other species. To study the nature of such inhibitory substance, seeds were first separated from other parts of fruit after collection. These two parts were then separately dried, powdered and extracted successively with a series of solvents as outlined in Figure 1. The crude extracts were then passed through a silica gel column, examined by TLC and further purified by passing through Sephadex LH-20 column. The partly purified abscisic acid (ABA) was detected by GLC with an electron capture detector after methylation as well as by wheat coleoptile straight growth assay. The ABA con tained in the purified extract was also identified by HPLC and GC-MS analysis. The results showed that there was certain amount of ABA in both seed and other parts of fruit. When ~3H-ABA was used as a tracer, the percentage of recovery of ABA in the extraction procedure was shown to be about 72%. The change of the level of ABA during seed germination and the possible role played by this endogenous phytohormone during dormancy remains to be investigated.

团花的种子中有抑制物质,把种子和果实的其它部分分别用有机溶剂提取和分离,所得粗提物经柱层析和薄层层析纯化后,用气相色谱、高效液相色谱、气-质联用等仪器进行测定,并结合生物鉴定,证明种子和果实其它部分中均含有一定量的脱落酸。种子中的含量为11.7μg/g干重,其它部分15.8μg/g干重。

In order to find a new way in mass production of selected aspen clone tissue from cambium, terminal and axillary bud,explants of aspen were cultured in 1985 and some plantlets were regenerated.Regeneration of aspen plant was manipulated through two ways:1. By callus culturesCallus culture was induced from aspen cambium explant on midium ACM+BAI+NAA2 or 2.4-2mg/1+Sucrose 2% with a compact constitution and high inducing rate of 73.6%.Culturing callus to initiate shoot formation ACM or 1/2 MS+BA 0.5mg/1+NAA0.05-0.1mg/1+Sucrose...

In order to find a new way in mass production of selected aspen clone tissue from cambium, terminal and axillary bud,explants of aspen were cultured in 1985 and some plantlets were regenerated.Regeneration of aspen plant was manipulated through two ways:1. By callus culturesCallus culture was induced from aspen cambium explant on midium ACM+BAI+NAA2 or 2.4-2mg/1+Sucrose 2% with a compact constitution and high inducing rate of 73.6%.Culturing callus to initiate shoot formation ACM or 1/2 MS+BA 0.5mg/1+NAA0.05-0.1mg/1+Sucrose 2% was applied and shown a maxi mum differentiating rate of 83.3%.2. By bud (terminal and axillary bud) cultureComparison with 7 combinations of culture midium ACM+BA0.3-0.5 mg/1+NAA0.02-0.05mg/1+Sucrose 2% was proved to be the optimum combination while the best time for bud excised from moth tree was shown first in the period of bud break and then the period of dormancy.Differentiating rate of bud explant excised in the early stage of dormancy was shown to be high on midium with optimum level of auxin when supplemented with 20mg/1 arginine. 1/2 MS or ACM+IBA 0.3-0.8 mg/1+Sucrose 2% was applied to initiate root formation and maximum inducing rate of 77.8% was achieved.

于1985年通过山杨(Populus davidiano)形成层、顶芽、腋芽的组织培养,成功的获得了再生植株,为当前生产大量繁殖山杨无性系优质苗提供了新的手段。 通过愈伤组织途径诱导再生植株,是以形成层为材料。诱导愈伤组织的培养基为ACM+BA_1+NAA_2或2.4—D_2mg/l+蔗糖2%,愈伤组织诱导率为73.6%,结构致密;诱导器官分化培养基为ACM或1/2MS+BA_(0.5)mg/l+NAA_(0.05-0.01)mg/l+蔗糖2%,最佳分化率为83.3%。 通过芽培养诱导再生植株,是以顶芽腋芽为材料,利用7个组合培养基试验比较,诱导芽分化最佳培养基为ACM+BA_(0.3-0.5)mg/l+NAA_(0.02-0.05)mg/l+蔗糖2%;适宜取材期为萌动期,其次是休眠期。 诱导初期休眠芽的分化,在适宜激素培养基中,另加20mg/l的精氨酸,芽的分化率有较明显的提高。 诱导生根培养基为1/2MS或ACM+IBA_(0.3-0.5)mg/r+糖蔗2%,生根率达77.8%。

 
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