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cold temperature
相关语句
  低温
     ② in cold temperature (LC, 14L:10D), (4±2)℃;
     ②长光低温组 (LC) ,14h光照 ,10h黑暗 ,(4± 2 )℃ ;
短句来源
     The results show that the callus induction of anthers collected from 5 ̄8 fruit branches and pretreated for 6 days at cold temperature (2 ̄4℃) is better on MS medium with 1.5 mg/L 2,4 D and 0.5 mg/L ZT.
     结果表明,以5~8果枝上1~2果的花药做材料,低温(2~4℃)处理6d后在附加1.5mg/L2,4-D+0.5mg/LZT的MS培养基上培养,愈伤组织发生最好。
短句来源
     Moreover, the cold temperature (4) treatment delayed the appearance of the microsome membrane Ca2+-ATPase activities peak, and inhibited the decreasing ratio of the microsome membrane Ca2+-ATPase activities.
     抑制衰老的低温处理(4℃)推迟了桃、草莓果实采后微粒体膜Ca~(2+)-ATPase活性高峰出现的时间,并抑制了微粒体膜Ca~(2+)-ATPase活性的下降。
短句来源
     Changes in activities of Ca 2+ ATPase and SOD,O -· 2 production rate and MDA content in microsomal membrane of strawberry fruit stored at normal temperature(25℃)and cold temperature(4℃)were investigated.
     测定了常温 (2 5℃ )和低温 (4℃ )贮藏的草莓果实中微粒体膜Ca2 + ATP酶 (Ca2 + ATPase)与超氧化物歧化酶 (SOD)活性、超氧阴离子 (O-·2 )产生速率和丙二醛 (MDA)含量的变化。
短句来源
     (4) ABA and Z+ZR contents rise apparently in cold temperature comparatively to the CK temperature, GA3 drop apparently, and IAA dosen't drop apparently.
     (4)与适温条件下相比较,低温胁迫下番茄内源ABA、Z+ZR含量极显著增加,GA_3含量极显著降低,IAA含量下降不显著。
短句来源
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  冷温
     (2) In this investigation, 75 fish species are caught, with warm temperature species, warm water species and cold temperature species accounting for 48.0%, 33.3% and 18.7%.
     (2) 调查中共捕获鱼类75种,其中暖温性种占48.0%,暖水性种占33.3%,冷温性种占18.7%;
短句来源
     (3)The cold temperature, with 20 species (14. 60% ).
     冷温性鱼类20种,占总数的14.60%。
短句来源
     The apparent characters such as canopy temperature,senescence of canopy leaves and awns can be used to identify cold temperature materials and to select cold temperature posterity.
     在育种实践中 ,可考虑将冠层温度、冠层叶片和芒等表观性状有机结合 ,以快速、准确地识别冷温材料 ,选择冷温后代
短句来源
  “cold temperature”译为未确定词的双语例句
     Degradation rate constants ( K ) were predicted, the K value was 0.0040926 h -1 (τ 0.9 = 25.8 h ) at room temperature ( 25 ℃ ), and 0.00041162 h -1 (τ 0.9 = 10.7 d ) at cold temperature (5℃ ).
     经预测室温 (2 5℃ )下K为0 .0 0 4 0 92 6h- 1,τ0 .9为 2 5 .8h ; 冷藏 (5℃ )下K为0 .0 0 0 4 116 2h- 1,τ0 .9为 10 .7d。
短句来源
     Brandt's voles ( Microtus brandti ) were randomly divided into seven groups and exposed to cold temperature[12L∶12D,(4±2)℃] for 12 hours,1,3 ,7,14,21 and 28 days respectively;
     布氏田鼠 (Microtusbrandti)随机分组暴露在冷环境 [12L∶12D ,(4± 2 )℃ ]中 12h ,1d ,3d ,7d ,14d ,2 1d和 2 8d ;
短句来源
     2) Long day cold temperature (16L∶8D, 5 ℃);
     2 3℃ ,8L∶ 1 6D;
短句来源
     3) short day warm temperature (8L∶16D, 23 ℃); and 4) short day cold temperature (8L∶16D, 5 ℃).
     5℃ ,1 6L∶ 8D和 5℃ ,8L∶ 1 6D。
短句来源
     The pointtem perature changes after exerting cold temperature load in the vital- blood- deficiency group were significantly lower than those in the normal control(P<0 .0 5 or P<0 .0 1) and other syndrom e type.
     气血两虚组各点温变化值均显著低于正常组 (P<0 .0 5~ 0 .0 1)及其他证型组 ;
短句来源
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  cold temperature
Improvements in cold temperature hydrocarbon emissions would also be beneficial in many parts of Europe during the winter months.
      
The DEAE-dextran induced microtubules are stable to cold temperature (4°) and calcium.
      
We observed that the rubber polymer core of the rubber particles was still malleable at this extremely cold temperature, and the core stretched substantially during separation of the fracture planes.
      
While UV-C stress caused a general increase in substance formation, cold temperature stress resulted in a strong activation of barbatic acid biosynthesis.
      
Based on results of a former study in 2005, this investigation aimed at quantifying UV- and cold temperature stress-induced changes within the secondary metabolite production of the cultured mycobiont of the lichen Heterodea muelleri (Hampe) Nyl.
      
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Cold injury which influence riee production in different rice growing countries oc- curs at various growth stages.The degree of cold injury depends on the air or water temperature,the cropping pattern,the growth stage of the rice and other factors.It is generally aeeepted that cold tolerance of rice at one stage is different from another stage.However,Okabe and Toriyama reported that varieties seem to respond simi- larly to cold temperature at different growth stages.Some varieties have been found to be...

Cold injury which influence riee production in different rice growing countries oc- curs at various growth stages.The degree of cold injury depends on the air or water temperature,the cropping pattern,the growth stage of the rice and other factors.It is generally aeeepted that cold tolerance of rice at one stage is different from another stage.However,Okabe and Toriyama reported that varieties seem to respond simi- larly to cold temperature at different growth stages.Some varieties have been found to be tolerant at different growth stages. The purpose of this experiment is to find whether cold tolerance scores at different growth stages of different kinds of riee are correlated or not.

从国际水稻研究所种质库取得50个水稻品种,其中包括粳型品种12个,釉稻18个,爪哇型品种10个,釉×粳杂种3个,以及野生稻7个。在芽期、苗期、移栽期、孕穗期、开花期,进行了耐冷性的测定。结果指出,在不同的水稻类型中,其耐冷性的次序为:粳稻>爪哇型>秈稻>野生稻。从本实验所采用的有限量的品种来看,在苗期粳型品种的耐冷性比其它类型好;在开花期某些爪哇型品种比粳型品种好;在芽期和苗期之间,以及在芽期和开花期之间,其耐冷性有明显的正相关。在其它时期之间未找到这种相关性。这指出,在特殊地区的低温发生时期的一定生育阶段中,进行筛选是必要的。

Observations were made under the electron microscope on the cytostructural conditions of the microspores that had been subjected to an injurious cold temperature dnring the boot stage in indica rice.The facts revaled from the observations were as follows.When the daily mean temperature in two days was 20℃(max.24℃.min.14℃)the injui-rous effect on the developing microspores was obvious.In the same pollen sac the difference in cyto-structural coditions among the individual developing microspores injured...

Observations were made under the electron microscope on the cytostructural conditions of the microspores that had been subjected to an injurious cold temperature dnring the boot stage in indica rice.The facts revaled from the observations were as follows.When the daily mean temperature in two days was 20℃(max.24℃.min.14℃)the injui-rous effect on the developing microspores was obvious.In the same pollen sac the difference in cyto-structural coditions among the individual developing microspores injured by cold was very great, quite a portion of the microspore cells was distorted or even disintegrated in various degrees , and the vacuoles were especially seriously deformed (destroyed) . In the tapetum the cytoplasm of the cells was also disorganised in various degrees. Finally the outcome of cold injury was an increace in the rate of blighted(empty) grains,i.e.,an increace of 35.1% as against the control.

应用电子显微镜对水稻孕穗期冷害的小孢子和绒毡层进行观察,得到如下结果:日平均温度20℃(最高24℃,最低14℃,持续时间2天),对籼稻品种(晚籼)的小孢子发育已有明显的影响。受低温影响的小孢子个体之间(在同一花粉囊中)的发育形态有很大差异。一部分小孢子的细胞器不同程度被破坏或解体,尤其各种形态的液泡系被破坏,液泡膜收缩,出现龟裂现象。受低温影响在绒毡层细胞的细胞质中,各种细胞器也不同程度被破坏或解体。最后导致空秕率增加,其空秕率比对照增加35.1%.

In recent years, we carried out pollen analysis on some se-diments of the pleistocene and Holocene from the vicinity ofHarbin, Heilonjiang province. The samples were collected inthe field by geological worker of the Hydrology team no. 2,Heilongjiang. This paper is on the basis of characteristics of sporo-pollenassemblages from 3 boreholes and 3 geological sections of Har-bin and further interpretes paleovegetation, paleogeogaphy andpaleoclimate, It is significantion more or less to use pollen an-alysis in Hydrogeology....

In recent years, we carried out pollen analysis on some se-diments of the pleistocene and Holocene from the vicinity ofHarbin, Heilonjiang province. The samples were collected inthe field by geological worker of the Hydrology team no. 2,Heilongjiang. This paper is on the basis of characteristics of sporo-pollenassemblages from 3 boreholes and 3 geological sections of Har-bin and further interpretes paleovegetation, paleogeogaphy andpaleoclimate, It is significantion more or less to use pollen an-alysis in Hydrogeology. Acconding to the palynology stratigraphy magnetostigraphicstudies, thermolunescent date and radiocarbon dating someconclusions can be drown: 1. The Cretaceous flora is mainly composed of Cyatheaceae,Lygodiaceae, Schiaceae, Cycadaceae and Taxodiaceae,podocarpus,Cedrus of Conifere, The climate was hot and wet. The vegetationshows tropical south subtropical in aspect. The annual tempe-rature was about 14.2℃ higher than that of present. 2. The flora of palaeogene is represented by some warm-temperature and subtropical deciduous forests among whichsome evengreen trees were in existence. The climate was wetand less hot. The annual temperature was about 10℃ higher-than that of the present. 3. The flora of Neogene is mainly composed of Amentiferaebut some subtropical species of Liquidambar, Carya, Fagus etc. arestill in existence. the climate was warm and wet. The annualtemperature was higher than that of the present. As to latepliocene, The Harbaceous plants such as chenopodiaceae, Com-positae and Gramineae etc, were obviously increase. 4. Quaternary floras: The floras of the glaeial and intergla-cial periods are quite different here. About 31×10~4--28×10~4(Luo jiawopeng formation) years ago herbaceous plants such asArtemisia, Chenopodiaceae, Humulus, Compositae were flourishingin plain of Harbin and mountainous region, in cold -tempera-ture forest consisted of Picea and. Betula. According to thesteppe or tundra increasing at that time we think ahout 30×10~5B. P. ago or so that time climate was cold and dry. In the past 28×10~5--25×10~5 years (Guanjiawopeng formation)deciduous broad-leaved forest consisted of Betula, Corglus thrivedunder a warm and humid climate. About 25×10~5--10×10~5 yearsago (correspond to Baitushan formation), the floras were alter-nation of steppe and forest. In the early period of that timethe flora was represented by steppe or tundra, climate was coldand dry, then by cold -temperature coniferous -broadleaf forestconsisting of Picea, Abies, Betula etc. Meantime the aquaticplants such as Typha, Myriophyllum and Green algae were growingin some shallow stangant ponds lakes or marshes of the vicinityHarbin. The climate was rather humid and warm. In the lastpart of the period the flora was characterised by deciduousbroad-leaved forest consisted of Betula, Quercus, Alnus, Ulmus,Tilia, Juglans, Acer, Corylus with scattered Tsuga and Fagus etc.indicating the existence of a warm temperature climate in theearly interglacial period. In the past 10×10~5--5×10~5 years (Cor-respondent to Huangshan formation) was very poorly representedonly Humulus, Artemisia. Chenopodiaceae. We think at that timethe vegetational zone belongs to typical desert and steppe, the climate was very dry. During 40×10~4--15×10~4 years B. P. (Har-bin formation) was a cold -temperature steppe consisted ofArtemisia, Chenopodium etc. thrived under a cold and wet climate,Meantime lakes and marshes apparently decreased with glacialperiod of the Quaternary. As to tke sporo-pollen assemblagesin the Guxiangtun formation (15×10~4--3×10~4 Yr. B. P.) showthere was cold temperate glassland consisted of Artemisia, Che-nopodium, Humulus and Gramineae so we infer that the vicinityHarbin at that time should be one of cold and dry naturalenvironment. The vegetational development and climatic changesin Harbin from late pleistocene to Holocene (15--1.2×10~4 yr. B.P.) may be divided into four periods: During (12--10)×10~4 yr.B. P. declivitous plain in Harbin was covered by a temperaturesteppe and at the same time scattered Betula, Qu

本文依据哈尔滨地区不同地貌单元内三个钻孔和三个自然剖面孢粉分析资料,结合古地磁测试,热释光和放射性碳素年令测定,进行钻孔和剖面间对比,初步建立起哈尔滨地区第四纪孢粉组合特征,进而讨论了哈尔滨地区第四纪以来植物群发展和气候变化。

 
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