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potato varieties
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  马铃薯品种
     Characteristics including resistance, commodity, quality and yield of 8 potato varieties were tri- aled and compared. The results showed that the yields of the varieties Luyin, 9903, Zhongshu No 3, and Zhong- shu No 2 increased, respectively, by 25.46%, 19.09%, 9.59% and 5.67% compared to the variety Dongnong 303 which is the main variety cultivated in Hunan now;
     通过对8个马铃薯品种的抗性、商品性、品质、产量等特性的比较试验,结果表明:鲁引、9903、中薯3号、中薯2号分别比东农303增产25.46%、19.09%、9.59%、5.67%,它们抗性强、综合性状表现好,值得推广。
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     The cultural plantlets of potato varieties including Guangyin No 1,Guangyin No 2,Guangyin No 3 and Guangyin No 4 were used as the experimental materials, in which the comparison tests of the microtuber induction were carried out respectively on 4 basic medium and different concentration of 3 kinds of hormones(Met、Coumarin and B9).
     以马铃薯品种广引1号、广引2号、广引3号、广引4号组培无菌苗为试验材料,分别进行4种基本培养基和3种激素(Met、Coumarin、B9)不同浓度对马铃薯试管微型薯诱导的对比试验。
短句来源
     Evaluation of Stability and Adaptability of Potato Varieties by AMMI Model
     应用AMMI模型评价马铃薯品种的稳定性和适应性
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     1. Regeneration medium of 6 potato varieties was screening.
     1.以茎段和微型薯为外植体,建立了6个马铃薯品种(系)的再生体系。
短句来源
     The stabilities of starch content and the rate of large and middle tuber of 6 potato Varieties and relationships between stabilities of starch content and 5 main agronomical characters were studied.
     笔者试用回归分析法对6个马铃薯品种淀粉含量和大中薯比率的试验结果进行稳定性分析,并通过相关分析对淀粉含量的稳定性与五个主要农艺性状的相互关系进行了初步研究。
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  马铃薯不同品种
     STUDY ON SALT-TOLERANCE OF POTATO VARIETIES
     马铃薯不同品种耐盐性差异初步研究
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     Starch Content and Starch Yield of Eight Potato Varieties under Different Ecological Environments
     马铃薯不同品种在不同生态条件下的淀粉含量与淀粉产量
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     Stem Regeneration System Screening of the Potato Varieties
     马铃薯不同品种茎段再生系统的筛选
短句来源
     These indices can be used to evaluate the drought resis - tance of different potato varieties.
     因此,这些指标可用于马铃薯不同品种抗旱性的评定。
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  “potato varieties”译为未确定词的双语例句
     The results indicated: The number ② media system (MS+0.01mg/L NAA+2mg/L BA+5mg/L GA3)is suitable to the most of the ten potato varieties.
     试验结果表明:②号培养基系统(MS+0.01mg/LNAA+2mg/LBA+5mg/LGA3)适合于供试材料中的大多数品种。
短句来源
     The correlation coefficients(r)between the soluble protein contents,the ratio of Chl-a to Chl-b and ATP contents,expressed as the percentage of controls,and drought resistance of potato varieties were + 0.8750,- 0.8509and + 0.7945,respectively(p<0.01).
     叶片中可溶性蛋白含量、叶绿素a/b比值、ATP含量占对照百分率与品种抗旱性之间的相关系数r分别为+0.8750、-0.8509、+0.7945,P<0.01。
短句来源
     The variation coefficients of all the four parameters were highest at 1 × 10~(-3) mol/L K. Therefore 1×10~(-3) mol/L was the suitable potassium level to screen low-K~+-tolerant potato varieties.
     随着钾浓度的增加,这四个指标都表现为上升趋势,并且在品种间的变异系数都在1×10~(-3)mol/L K~+浓度下表现最大,因此选择1×10~(-3) mol/L K~+作为筛选耐低钾品种培养基的合适钾浓度。
短句来源
     The ratio of protein to crude protein was 0.42 -0.62 with the average of 0.52. The author held that varied nitrogen contents in the soil had no significant effects on the outcome of screening higher crude protein potato varieties in field conditions.
     蛋白质与粗蛋白质比值介于0.42~0.62之间,平均比值为0.52.笔者认为,在大田条件下,环境中氮的多寡,对筛选高蛋白质品种(系)没有显著影响.
短句来源
     Chlorophill content and net photosynthesis rate were tested in 23 sweet potato varieties and 5 commercial varieties, Taiwan Shu, Chuanshanzi, Xu91-51-1, Jingzha 4 and Xushu 18( as a control).
     对23份自育的甘薯品系、台湾薯、川山紫、徐91-51-1和京杂4号等甘薯良种的叶片叶绿素含量和净光合速率进行了测定,对照品种为甘薯良种徐薯18。
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  potato varieties
The result showed that the tested Hungarian potato varieties contain glycoalcaloids between 0.09 and 15 mg 100 g-1.
      
A disease characterized by large yellow spots has been found in a number of potato varieties in Primorskii krai.
      
85 wild and cultivated potato species of 6120 genotypes from 2818 different sources were investigated in order to find out whether breeding of potato varieties with changed proportions of amylose: amylopectin were possible.
      
Using hierarchically ordered phenotype arrays at 9 of these isozymes, we were able to construct a dichotomous classification table for a total of 74 potato varieties, including those of most agronomical interest in Europe and North America.
      
The possibility of genotype identification with RFLP fingerprints was examined with 20 tetraploid potato varieties and 38 diploid potato lines.
      
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A wilt disease of sweet potato caused by a species of bacteria inflicts serious losses in many districts in western, central and eastern parts of Kwangtung province. The identification of the pathogen is in progress. It is believed that the disease is the same as that described by Hwang et al (1956, Acta Phytopathologica Sinica 2 (2): 97—113) in Kwangsi district. The disease is chiefly transmitted by affected cuttings and seed potatoes as well as by infested soils. It is particularly serious in those fields...

A wilt disease of sweet potato caused by a species of bacteria inflicts serious losses in many districts in western, central and eastern parts of Kwangtung province. The identification of the pathogen is in progress. It is believed that the disease is the same as that described by Hwang et al (1956, Acta Phytopathologica Sinica 2 (2): 97—113) in Kwangsi district. The disease is chiefly transmitted by affected cuttings and seed potatoes as well as by infested soils. It is particularly serious in those fields where continuous cropping of sweet potato is practiced. The severity of losses is generally greatly reduced if the preceding crop is rice or water-taro grown under continuous flooding for several months or longer. Sweet potato varieties grown in Kwangtung vary in their resistence as expected, the most productive varieties being in general the most susceptible. In the spring of 1958 a large scale control experiment was conducted in 70 Mou (亩) of water rice land in western Kwangtung where the disease was historically serious. The control measures consisted in: (1) Using healthy seed tubers selected from disease-free fields or disease-free localities for propagating nursery vines. To assure that the seed tubers were free from infection, the tubers were cut at both ends for examination. Diseased tubers when found were discarded and healthy ones subsequently disinfested in 0.1% HgCl_2 solution for 10 minutes. (2) Selecting fields which previously had been under water rice cultivation for half a year or longer for planting as well as for growing seed tubers for propagating nursery vines. (3) Avoiding possible contamination of seed-bed soils and field soils. Possitive results of control were obtained. All the seedlings grown from the tubers were free from infection. Only rarely were the nursery vines grown from the seedling cuttings infected. In the nearby propagating beds (which serve as control) the nursery vines were moderately to seriously infected, the percentage of infection being from 2 to 40. In the 68 experimental field plots planted to sweet potatoes with disease free vines covering a total area of 70 Mou, only 15 plots showed slight degree of infection, the infection rates generally ranging from 0.1 to 0.5%. Among the 41 control plots distributed in 2 localities covering about 27 Mou, 37 plots were infected to various degree, the infection rates ranging from to 1 to 100% with an average of about 30%. A variety of sweet potato, Tai-Nung No. 46, was found to be highly resistant to the disease. It is recommended to be grown in high land areas where the disease cannot be controlled by the measures described above.

1958年在前信宜县金垌乡金星高級农业社进行了大面积的防治甘薯瘟試驗。防治措施主要是:(1)用无病薯块育苗。品种为最易感病的当地丰产良种“黑节降”,比較抗病的“选二”和很少量的抗病品种“台农46号”,以后在定植时由于种苗缺少一些,曾从农家无病田里剪取一些“新洲薯”(中等抗病)及“木薯”(很抗病)的切条来补充。(2) 育苗地和假植地都选用与水稻轮栽过一年至多年的田块,定植地(即大田)則用种过水稻半年以上的田块。在試驗过程中尽可能采取了避免污染的措施。本試驗的結果是显著的。薯块育苗地完全沒有发病,在12片假植田中只有2片各有几条苗发病,在68片大田中只有15片发病,发病率一般为0.1—0.5%。但对照区却严重发病(假植地发病率为2—40%,大田发病率一般为20—30%,严重的达100%)。試驗結果表明甘薯田土壤中的病原菌在水浸半年后可能全部死灭。經1957年試驗証明抗病性強而貭量較好的品种“台农46号”推广到高州县历年严重发病的金垌、池垌和北界三个乡去,种植了約200多亩,也完全沒有发病。

The results of field and greenhouse inoculation experiments indicated that the reactiontypes of three potato varieties (‘Irish Cobbler’,‘292-20’and‘Epoka’) to races ‘O’,‘1,4’,and‘1,3,4’remained unchanged throughout all developmental stages.

从试验的三个品种对于三个晚疫病菌小种的反应看来,马铃薯各生育期的小种抗性十分稳定。对于能侵染的小种,各时期都能感病,没有免疫或高度抵抗的生育期;对于不能侵染的小种,各时期都同样地抗病,也没有抗性特别低而可被低一级的小种越级侵染的时期。

From 1977 to 1981 more than 500 sweet potato varieties from domes-tic and abroad were tested in some severely epidemical regions of bac-terial wilt in Fujian for determination of their resistance.The resultshowed that none of them was immune,but there was considerable dif-ference among their disease incidences.17 varieties of them were highresistance (disease incidence 0.1~10% and its index 1~5),and 88varieties were moderate resistance (disease incidence less than 11~39%and its index 6~20)....

From 1977 to 1981 more than 500 sweet potato varieties from domes-tic and abroad were tested in some severely epidemical regions of bac-terial wilt in Fujian for determination of their resistance.The resultshowed that none of them was immune,but there was considerable dif-ference among their disease incidences.17 varieties of them were highresistance (disease incidence 0.1~10% and its index 1~5),and 88varieties were moderate resistance (disease incidence less than 11~39%and its index 6~20). According to the record data in recent years from many epidemicalregions,it was also proved that the depression of resistance of thesevarieties occured after continuously planting for 2~3 years,and itwas variable among different varieties.Therefore,in order to preventfrom the bacterial wilt of sweet potato,it is neccessary to adopt somemeasures such as,changing variety annually,selecting high resistantvariety continuously,planting new resistant variety,etc,

甘薯品种对甘薯瘟病的抗性研究,自1977~1981年作者先后从国内外引进500多个品种分别在几个重病区进行试验,从鉴定材料的分析表明,供试甘薯品种没有一个对甘薯瘟病是免疫的,但不同品种之间的抗性有明显差异,其中高抗(发病率0.1~10%,病指1~5)的品种有17个,中抗(发病率11~39%,病指6~20)的品种有88个。近年来,作者在病区多点调查和试验中还发现不同品种在同一病田连续栽植2~3年后,其抗性的衰退有差异。因此,采用异地换种和连续不断地选用高抗品种为抗源,培育新的抗瘟品种,对预防或控制甘薯瘟病具有重要意义。

 
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