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   cold stratification 的翻译结果: 查询用时:0.195秒
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cold stratification
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  低温层积
     Seeds which had been cold stratification could germinate in 1.4—8.2℃.
     经冬季低温层积的种子,可在1.4—8.2℃的低温中发芽。
短句来源
     treatment with 40, 50, 60 and 70℃ hot water respectively; sacrification seed coat combining with temperature-accelerated stratification (0-4℃ 16 h and 10-15℃ 8 h); cold stratification (0-4℃) and temperature-accelerated stratification (0-4℃ 16 h and 10-15℃ 8 h).
     共设定 5个处理 :剪破种皮、热水处理 (4 0、5 0、6 0和 70℃ )、剪破种皮并变温层积 (0~ 4℃ 16h与 10~ 15℃ 8h)、低温层积 (0~ 4℃ )和变温层积(0~ 4℃ 16h与 10~ 15℃ 8h)。
短句来源
     The induced rate of the secondary dormancy differed from the treatments and the incubation conditions. The germination percentage of seeds stratified in(23±2)℃ was 10.3%,while it was up to 44.7% after the acid scarification,GA_3 soaking and cold stratification.
     酸蚀后在(23±2)℃条件下层积的种子发芽率仅为10.3%,而酸蚀后又经GA3浸种和GA3拌沙低温层积的发芽率可提高到44.7%。
短句来源
     Results are as follows:The optimum seed germination temperature of Iphigenia indica is about 25℃,the optimum lighting period is more than 8h,the optimum photoproton is either red or yellow light,the optimum sowing depth is less than 0.5cm,the optimum soil moisture content is about 70% and the optimum cold stratification time is about 60~80 d.
     结果表明:丽江山慈菇种子萌发的适宜温度为25℃左右,适宜的光照时间为8 h以上,适宜的光质为红光和黄光,适宜的播种深度为土壤表层以下不超过0.5 cm,播种适宜的土壤含水量为70%左右,适宜的低温层积时间为60~80 d。
短句来源
     After the 6th week of cold stratification, the activity of superoxide dismutase(SOD) content had a drop tendency, but malondialdehyde(MDA) just was opposite.
     低温层积第6周后SOD含量呈现下降趋势,而MDA则正好相反,呈现上升趋势。
短句来源
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  低温层积处理
     (3) Effect of cold stratification on dormancy-breaking of the three species and the on their tolerance to salt. The freshly matured seeds of H. strobilaceum, K.
     以及(3)低温层积处理对三种盐生植物种子休眠打破和耐盐性影响。
短句来源
     Only those seeds appeared the high germination percentage by the cold stratification.
     只有通过低温层积处理过的种子才出现较高的发芽率。
短句来源
  “cold stratification”译为未确定词的双语例句
     The seed dormancy of Iris pseudacorus can be removed by GA_3,the pretreated seeds with 50 mg/L GA_3 had 84.4% germination. Cold stratification for 30 and 90 days can raise the germination rate of Iris ensata and Iris laevigata to 94.4% and 87.8% respectly.
     不同种打破休眠的有效方法不同,其中50 mg/L GA3处理可提高黄菖蒲种子的发芽率,达到84.4%,而低温沙藏30 d可使玉蝉花种子的发芽率达到94.4%,低温沙藏90 d则可提高燕子花的发芽率达到87.8%。
短句来源
     The germination rate reached 14% when seeds were treated with 300ppm gibberellin after cold stratification for 60 days.
     特别是在层积处理60 d,又经300 mg/L赤霉素处理后,种子萌发率可达14%. 由此可见,多种处理方法的配合使用对破除马蔺种子休眠以及提高其萌发率有一定作用.
短句来源
     Both the H 2SO 4 and cracking pretretments increased the air permeability and the mechanical restraint of the seed coat. After cold stratification over winter in sand moistened with 250 mg·L -1 GA 3 Solution, the pretreated seeds had 82.4% gremination, while the control seeds did not germinate or only few germinated.
     添加 2 5 0 mg· L- 1 GA3 溶液 ,经过一个冬天层积后 ,发芽率可达82 .4% ,而对照种子不萌发或发芽甚少
短句来源
     After the H 2SO 4 pretreatment increased the air permeability and the mechanical restraint of the seed coat. After cold stratification over winter in moistened with 500mg·L -1GA 3 solution, the pretreated seeds by concentrated H 2SO 4 for 11 hours had 38.9% germination, while the control seed did not germination.
     酸蚀 11h的种子 ,与拌有 5 0 0 mg·L- 1 GA3湿沙相混并经一冬层积后 ,可获 38.9%的出苗率 ,而对照则颗粒不发。
短句来源
     4. With the increasing of cold stratification time, the activity of peroxidase (POD) was at the steady state .
     4.在种子休眠解除的前后,POD含量一直处于较稳定状态;
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  cold stratification
Dormancy was broken by a 2 to 6 months period of cold stratification.
      
The dormancy could be broken by cold stratification only.
      
Dormancy was interrupted in cold stratification at temperatures between +1 and +6°C.
      
In summary, seeds of S.?marilandica exhibit physiological dormancy, which can be alleviated by exposure to light, after-ripening and/or cold stratification.
      
We recommend that cold stratification be targeted towards species with strong dormancy or used across a wider range of species when seed supplies for restoration are limiting.
      
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Tetracentron sinensis is a valuable tree which is rare. Its seeds have not dormancy. Its reaction to light is different at temperatures, at 25℃ no lightdemanding, at 24—33℃ (most at 28—30℃) light-favored and at 10—20℃ light can promote germination. Optimum germination temperature is 25℃; Seeds which had been cold stratification could germinate in 1.4—8.2℃. KNO_3 could partly relieve temperature demand in seeds germination, GA had this action in just a little.

水青树是一种稀有珍贵树木。它的种子没有休眠,对光的反应随温度而异,25℃时不需光,24—33℃(多在28—30℃)喜光,10—20℃光对发芽有促进作用。最适发芽温度为25℃。经冬季低温层积的种子,可在1.4—8.2℃的低温中发芽。硝酸钾能部分解除种子发芽对温度的要求,GA也略有这种作用。以上结果不仅对水青树的种子检验和播种育苗有实用价值,同时在光温和化学处理对发芽的影响方面,有一定的理论价值。

Populus bolleana Lauche is one of the important species in Xinjiang. The difficulty we have met is lower survival rate in asexual propagation. This paper tries to find out the change of endegenous inhibitor and activity of partial enzymes before and after cold stratification. The influece of plant somatotropin and plastic cover on rooting of cutting has been learnt as well. At the same time, the morphological and anatomical characters were observed. All of these provided some scientific basis for developing...

Populus bolleana Lauche is one of the important species in Xinjiang. The difficulty we have met is lower survival rate in asexual propagation. This paper tries to find out the change of endegenous inhibitor and activity of partial enzymes before and after cold stratification. The influece of plant somatotropin and plastic cover on rooting of cutting has been learnt as well. At the same time, the morphological and anatomical characters were observed. All of these provided some scientific basis for developing cutting survival rate of Populus bolleana Lauche.

本文研究了新疆杨插穗低温层积处理前后内源抑制物和部分酶类活性的变化,植物生长素和地膜育苗对插穗生根的影响,观察了插穗的形态解剖特征。为提高新疆杨扦插成活率找到了一些科学依据

The germination rates of seed,embryo and embryonic axis of Prur.ua davi-diana in relation to endogenous ABA,IAA and exogenously applied GAs and BA during the processes of cold stratification and dry storage at room temperature have been studied.Sixteen weeks of dry storage resulted in only a slight reduction of ABA levels in the seed coat,but reduced that in the embryo from 303.82ng/g.FW to 92.15ng/g.FW.At the same time the IAA level in both seed coat and embryo decreased slightly.These seeds germinated...

The germination rates of seed,embryo and embryonic axis of Prur.ua davi-diana in relation to endogenous ABA,IAA and exogenously applied GAs and BA during the processes of cold stratification and dry storage at room temperature have been studied.Sixteen weeks of dry storage resulted in only a slight reduction of ABA levels in the seed coat,but reduced that in the embryo from 303.82ng/g.FW to 92.15ng/g.FW.At the same time the IAA level in both seed coat and embryo decreased slightly.These seeds germinated readily but appeared dwarf thereby implying inhibition of epicotyl growth.However,10 weeks of cold stratification apparently was enough to reduce the ABA level to 183.70μg/g·FW in coat and 9.03 μg/g-FW in embryo,and drastically increase the IAA level in embrvonic axis from 40.24μg/g-FW to 8007.80μg/g·FW.The cold-stratified seeds gave a 100% germination rate and normal seedlings,implying that the IAA might be necessary for normal growth of peach epicotyl.The experiments also showed that GA3 and GA3+BA could partly replace chilling in breaking dormancy of epicotyl and hypicotyl.A tentative mechanism for phytohormone control of dormancy and germination of peach seeds has been discussed.

为了比较全面地了解需低温种子休眠和萌发的激素控制机理,我们以室温贮藏为对照,系统研究了低温和外源植物生长调节物对山桃种子萌发的影响,并用气相色谱和气相色谱—质谱联用仪分别测定了内源ABA和IAA在不同贮藏条件下的变化。研究发现:山桃种子去除种皮、子叶后的离体胚轴是不休眠的,在整个室温贮藏期间,种皮对萌发均有显著的抑制作用。去除种皮即可使贮前山桃种子的萌发率由0提高到40%。如果不去除种皮而仅在胚根处划破种皮,可使萌发率提高到26%左右。所以,种皮的抑制作用肯定有一部分是抑制物质引起的。分析证明,种皮ABA含量在贮藏前高达690.07ng/g·FW。干藏16周后仅下降到616.47ng/g·FW。对萌发的抑制作用仍保持原有水平。低温层积6周,种皮ABA含量下降到374.08ng/g·FW,对萌发的抑制作用未见明显减小。到第10周下降为183.74ng/g·FW,种皮对萌发的抑制作用完全解除。去除种皮后,仍有60%的种子不能萌发,而离体胚轴是完全能够迅速萌发的。所以,贮前来自子叶的抑制作用是相当强的。胚的ABA含量在贮前为303.82ng/g·FW,由于子叶比种皮重得多,所以ABA的总含量相当可观。加之子叶与胚之...

为了比较全面地了解需低温种子休眠和萌发的激素控制机理,我们以室温贮藏为对照,系统研究了低温和外源植物生长调节物对山桃种子萌发的影响,并用气相色谱和气相色谱—质谱联用仪分别测定了内源ABA和IAA在不同贮藏条件下的变化。研究发现:山桃种子去除种皮、子叶后的离体胚轴是不休眠的,在整个室温贮藏期间,种皮对萌发均有显著的抑制作用。去除种皮即可使贮前山桃种子的萌发率由0提高到40%。如果不去除种皮而仅在胚根处划破种皮,可使萌发率提高到26%左右。所以,种皮的抑制作用肯定有一部分是抑制物质引起的。分析证明,种皮ABA含量在贮藏前高达690.07ng/g·FW。干藏16周后仅下降到616.47ng/g·FW。对萌发的抑制作用仍保持原有水平。低温层积6周,种皮ABA含量下降到374.08ng/g·FW,对萌发的抑制作用未见明显减小。到第10周下降为183.74ng/g·FW,种皮对萌发的抑制作用完全解除。去除种皮后,仍有60%的种子不能萌发,而离体胚轴是完全能够迅速萌发的。所以,贮前来自子叶的抑制作用是相当强的。胚的ABA含量在贮前为303.82ng/g·FW,由于子叶比种皮重得多,所以ABA的总含量相当可观。加之子叶与胚之间的直接解剖结构联系,子叶的抑制作用要大于种皮。无论在室温或低温条件下,种子ABA含量均有下降。低温层积6周时,?

 
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