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varietal     
相关语句
  品种
     Varietal Differences in Photochemical Efficiency of PS Ⅱ and Features of CO_2 Exchange in Rice Leaves Under Photoinhibitory Conditions
     光抑制条件下不同水稻品种叶片的PSⅡ光化学效率和CO_2交换特性的差异
短句来源
     Wheat and corn varietal combination,K,N×P,N×P×K very significantly,P and variety combination×P×K significantly affected the total annual yield.
     品种搭配、K处理、N×P、N×P×K对年总产作用极显著,P处理、品种搭配×P×K作用显著。
短句来源
     Barley Varietal Identification by SDS-PAGE
     用SDS-PAGE方法鉴别进口大麦品种
短句来源
     Penning de Vries's modelling methodology and fundamental frame of L1D and TIL modules of MACROS,a dynamic simulation model of quality indexes in rice population suitable to local soil,climate and other varietal characters was conducted according through field trials and documental data.
     Penning de Vries的建模思想和 MACROS中 L1 D、TIL的基本框架 ,通过田间试验和文献资料的收集 ,组建了适合本地土壤条件、气候状况和品种特性的水稻群体质量指标动态模拟模型。
短句来源
     The varietal se- quences of stability were completely the same among 4 parameters θ_i,θ_((i)),ω~2_i and σ~2_i,of which the calculation of ω~2_i was simple and σ~2_i was an unbiased estimate of GE interaction, both of them were more suitable for assessing the stabilities of sugarcane variety in the re- gional test.
     4种参数θ_i、θ_(i)、ω_i~2、σ_i~2评价的结果完全一致,其中ω_i~2计算简便,σ_i~2为无偏估计值,更适用于评价区试中甘蔗品种的稳定性.
短句来源
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  品种的
     Varietal differences were observed for Pn (12.62-14.80μmol m-2 s-1), Tr (3.72-4.80mmol m-2 s-1) and WUE (3.07-3.65mmol CO2 mol-1 H2O).
     供试品种的Pn(12.62-14.80μmolm-2s-1),Tr(3.72-4.80mmolm-2s-1)和WUE(3.07-3.65mmolCO2mol-1H2O)有差异。
短句来源
     The varietal se- quences of stability were completely the same among 4 parameters θ_i,θ_((i)),ω~2_i and σ~2_i,of which the calculation of ω~2_i was simple and σ~2_i was an unbiased estimate of GE interaction, both of them were more suitable for assessing the stabilities of sugarcane variety in the re- gional test.
     4种参数θ_i、θ_(i)、ω_i~2、σ_i~2评价的结果完全一致,其中ω_i~2计算简便,σ_i~2为无偏估计值,更适用于评价区试中甘蔗品种的稳定性.
短句来源
     variety immature spike and 6 varietal young embryo of Hordeum distichum,2n= 24,were cultured on MS medium with 500 mg/L caseinhydrolysate,150 mg/L L-Asparagineand 2 mg/L2,4-D(M_(320)). The callus began to be formed.
     对12个品种的二棱大麦(Hordeumdistichum2n=24)幼穗和6个品种的幼胚在附加500mg/L酪蛋白,150mg/L天门冬素和2mg/L2,4-D的MS培养基(M_(320))中进行了离体培养,并诱导产生出了愈伤组织。
短句来源
     Having been determined the cross-incompatibility groups of 313 sweet potato cultivars from 1981-1986, it was found that the group B was the most and then group B >A>D>C>A(_1-2)>American red>Tiexinteug in accordance with the varietal number.
     自1981-1986年6年期间利用广东省丰富的甘薯品种资源及其有利于自然开花的气候条件,测定出313个品种的杂交不亲和群的群别,其中属B群品种资源的最多。 按不同群别品种数目多少排列,其顺序是B群>A群>D群>C群>A_(1-2)群>美国红群>铁线籐群。
短句来源
     50 Years of Spring Wheat Breeding in Northeast China Ⅱ. Wheat Varietal Development and Pedigree
     东北春麦区小麦育种50年 Ⅱ.小麦品种的演变及其系谱
短句来源
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  品种间
     Varietal difference of selective culture of HPT gene rice
     HPT转基因水稻对选择培养的品种间差异
短句来源
     The Varietal Difference of Rice Adaptation to High and Low Light Intensity
     水稻对高低光强适应的品种间差异
短句来源
     100 mg sampling weight is better,but less than 100 mg can also be used when comparing varietal amylose content.
     样品量以100mg 为宜,但不足100mg 时进行品种间的比较仍可考虑采用。
短句来源
     Approaches for breeding of resistance by employing the varietal differences of resistance are discussed.
     本文对利用欧亚种葡萄品种间霜霉病感病性的差异进行优质抗病育种途径进行了探讨。
短句来源
     The responses of transpiration rate (Tr) and water use efficiency (WUE) to PAR showed as an asymmetric inverse parabola and an S-like curve respectively, without evident varietal difference.
     蒸腾速率(Tr)和水分利用效率(WUE)的光强响应曲线分别为不对称下行抛物线和拟S形曲线,品种间差异不明显。
短句来源
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  “varietal”译为未确定词的双语例句
     Out of them, 6 clones (44-4, 61-10,56-2,50-2,6-2 and, 1-17) were used as parental material for varietal selection,3 clones (50-2,1-17,56-2) were distributed for trail-production in different ecological regions;
     其中单系的44—4、61—1O、56—2、50—2、6—2、1—17等已作为杂交亲本利用; 50—2、1—17、56—2等已在我省不同生态区域进行适应性鉴定和试种;
短句来源
     Through varietal screening, a series of loci causing hybrid sterility, such as S7, S8, S9, S15, S16, S17 and S26(t) were detected by using isozymes and molecular markers.
     随后,S8、S9、S15、S16、S17、S26(t)等杂种不育位点先后被鉴定出来。
短句来源
     Under the same condition, it works for 15 minutes, 30 minutes, 60 minutes and 90 mintues, it's elimination rate to Varietal germ of bacillus subtilis in the air is 98. 87%, 99. 50%, 99. 72% and 99. 84% respectively.
     开机消毒15、30、60和90分钟对空气中枯草杆菌黑色变种芽胞的消除率分别为98.87%、99.50%、99.72%和99.84%。
短句来源
     Somatic embryos were germinated and the plantlets were obtained on 1/2 SH media supplemented with 0.1 mg/L-1BA +0.1 mg/L L-1 NAA. This is the first report on tissue culture and plant regeneration through somatic embryogenesis and will establish a base for the genetic transformation and varietal improvement of Torreya grandis in the future.
     5 继代的体细胞胚在培养基为1/2 SH或1/2 SH+BA 0.1 mg/L+NAA 0.1 mg/L体细胞胚均能萌发,且能够形成完整植株。
短句来源
     Screening trial on the varietal resistance to P.nicotianae shows that Passiflora edulis var.flavicarpa Degener had resistance,while P.edulis was the most susceptible to P.nicotianae.
     抗病性试验结果表明,黄果种(P.edulis var flavicarpa Degener)具有抗性,而紫果种(P.edulis Sims)易感病。
短句来源
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  varietal
Comparison between varietal purity and zymogram purity in maize
      
It was found that the varietal purity is higher than the zymogram purity and they showed a linear relationship.
      
The regression mefficient (γ) between varietal purity and zymogram purity is 0.898 2.
      
Therefore, it is reasonable to claim that zymogram purity is lower than the varietal purity.
      
Varietal differences in photosynthetic characters and chlorophyll fluorescence induction kinetics parameters among intergeneric
      
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The headblight or scab of wheat caused by Gibberella zeae (Schw.) Petch.has in recent years become more prevalent in the rice-wheat growing area ofEastern China with two heavy epidemics in 1952 and in 1954.It was reportedfrom this area that wheat varieties showed marked differences in their susceptibilityto headblight and that native varieties in general were less susceptible than theimproved ones.It was also reported that the degree of susceptibility appeared tobe related to the stage of host development.In...

The headblight or scab of wheat caused by Gibberella zeae (Schw.) Petch.has in recent years become more prevalent in the rice-wheat growing area ofEastern China with two heavy epidemics in 1952 and in 1954.It was reportedfrom this area that wheat varieties showed marked differences in their susceptibilityto headblight and that native varieties in general were less susceptible than theimproved ones.It was also reported that the degree of susceptibility appeared tobe related to the stage of host development.In 1952,varieties with earlier date ofheading were generally less susceptible than those which headed late. Varietal tests for the headblight resistance were made in Nanking in 1952and 1954.In 1952,235 varieties and hybrids were studied for their resistance toscab under natural conditions in the field.Great differences were found in theirdegree of infection,although none of them was immune.The percentages of in-fected heads ranged from 0.9 to 89.1 with most of them having 10 to 40% infec-tion.No definite correlation was seen between the percentage of infection andthe date of heading or of maturing.In 1954,tests on varietal resistance to scabwere again made with 40 varieties and hybrids including those being relatively lesssusceptible in the previous test.Attempts were made to induce epidemics in thefield by means of artificial inoculation.Results indicated that both mycelial andconidial suspensions were similarly effective for artificial inoculation.The averagepercentages of infected heads in the inoculated plots ranged from 4.2 to 77.7 incontrast to the uninoculated plots where the average percentages of infected headsbeing only trace to 7.1 with one variety not infected. From the experimental results obtained in 1952 and 1954,it was found thatrelative stability in resistance to headblight existed among different wheat varie-ties,although there was great variation in varietal resistance due to the effect ofenvironmental factors.Two hybrids,"5201" and "5204",were found to be muchmore resistant than all other varieties tested in both years.Hybrid "5204" gave ??0.9% of infected heads in 1952 and 3.4% in 1954,and hybrid "5201" gave5.5 and 9.0% of infected heads in the respective years.Both hybrids also possessother desirable characteristics such as early maturity,relative high yield,stiffystems,and high resistance to the stripe rust. Greenhouse studies were made in 1954 with two susceptible varieties ofwheat for testing their susceptibility to headblight at six different stages of deve-lopment from shooting to hard dough.Results indicated that the plant was sus-ceptible at all these stages of development with a tendency of being more heavilyinfected toward maturity.It was also observed that temperature had obvious effecton the degree of infection.Plants inoculated at flowering stage were more heavilyinfected when kept at 25℃ after inoculation than when kept at 15℃.However,the inoculated plants kept at 25℃ during the day and at 15℃ at night resultedin a degree of infection similar to those kept at 25℃ all the time.

(一)小麦赤微病在苏、浙、皖的稻麦两熟地区经常严重发生,1952及1954年两度猖獗流行,造成苏南及浙江地区小麦生产上的严重损失。通过调查,发现各地小麦品种对病害的反应确有显著差异。地方品种,一般发病较轻,而改良品种如“2905”、“2419”、“玉皮”、“矮立多”等,常常严重地感染病害。(二)1952年在自然情况下,观察此较235个小麦品种结果,虽没有一个品种不发病,但品种间的发病率相差极大,自0.9%至89.1%,而不同品种感染程度的轻重与抽穗期及成熟期的早迟关系不大。(三)1954年大田人工接种结果,效果显著,供试40个品种接种区的最高发病率达77.7%,而自然感染区的最高发病率只有7.1%。在接种试验中,初步证明:(1)大量有效的病原体与适合病害发生的气候因子同是病害流行的主要条件;(2)接种方法,用菌丝体接种与用分生孢子接种的效果,并无多大差别;(3)品种的抽穗先后,与发病轻重无一定关系。(四)温室试验指出,小麦自抽穗至糊熟各期麦穗被害率相似,但小穗的被害率在抽穗期最低,开花以后,有愈近成熟感染程度愈重的趋势。(五)开花期接种后的小麦,置於25℃的麦穗被害率和置於15℃的相似,但前者的小穗被害率此后...

(一)小麦赤微病在苏、浙、皖的稻麦两熟地区经常严重发生,1952及1954年两度猖獗流行,造成苏南及浙江地区小麦生产上的严重损失。通过调查,发现各地小麦品种对病害的反应确有显著差异。地方品种,一般发病较轻,而改良品种如“2905”、“2419”、“玉皮”、“矮立多”等,常常严重地感染病害。(二)1952年在自然情况下,观察此较235个小麦品种结果,虽没有一个品种不发病,但品种间的发病率相差极大,自0.9%至89.1%,而不同品种感染程度的轻重与抽穗期及成熟期的早迟关系不大。(三)1954年大田人工接种结果,效果显著,供试40个品种接种区的最高发病率达77.7%,而自然感染区的最高发病率只有7.1%。在接种试验中,初步证明:(1)大量有效的病原体与适合病害发生的气候因子同是病害流行的主要条件;(2)接种方法,用菌丝体接种与用分生孢子接种的效果,并无多大差别;(3)品种的抽穗先后,与发病轻重无一定关系。(四)温室试验指出,小麦自抽穗至糊熟各期麦穗被害率相似,但小穗的被害率在抽穗期最低,开花以后,有愈近成熟感染程度愈重的趋势。(五)开花期接种后的小麦,置於25℃的麦穗被害率和置於15℃的相似,但前者的小穗被害率此后者高。日间25℃和夜间15℃交替的变温处理,发病情形与始终置於25℃的相近。(六)不同小麦品种对于赤微病具有相对稳定的抵抗性或感染性。“5201”及“5204”等杂交系,在自然感染和人工接种情形下,发病都很轻微,并且具有早熟、丰产、秆硬和高度抵抗条锈等优良特性。

High percentage of chlamydospore germination of Neovossia horrida (Tak.)P.& K.with abundant basidiospore production was obtained by placing moistenedspores in a Petri dish with limited supply of water,the dish-cover being inkedblue to insure a favordable light condition.Moistened spores applied on the sur-face of kernels of a growing rice head enclosed in a paraffin paper bag was alsofound to germinate by producing a very short basidium and a large number ofbasidiospores.It is,therefore,concluded that not only...

High percentage of chlamydospore germination of Neovossia horrida (Tak.)P.& K.with abundant basidiospore production was obtained by placing moistenedspores in a Petri dish with limited supply of water,the dish-cover being inkedblue to insure a favordable light condition.Moistened spores applied on the sur-face of kernels of a growing rice head enclosed in a paraffin paper bag was alsofound to germinate by producing a very short basidium and a large number ofbasidiospores.It is,therefore,concluded that not only light but also oxygen isrequired for normal germination of the spores of the rice kernel smut. Results of a series of inoculation experiments conclusively show that thefungus infects rice kernels during the milky dough stage.Basidiospore inoculationgives higher percentage of infection than chlamydospore inoculation. Field observation indicates that the incidence of high percentage of infectionis coincident with the excessive application of nitrogenous fertilizer.Fluctuationof the amount of infection from year to year is probably determined chiefly by theduration of high moisture period from heading to dough stage.There are someevidences of varietal difference in the susceptibility of rice to the kernel smut.

(一)稻粒黑穗病菌厚垣孢子的正常萌发,在外界环境條件的關係上,不僅要求一定的光照,而且需有充分的氧氣供給。至於對水分的要求,只要空氣中?窒喈敐穸?已足供萌发的需要,不一定要有水滴的經常存在。(二)接種試驗證明病原係在水稻的灌漿期侵入種实。在自然界中,這種侵染顯然是通過氣流傳播而實现的。但種子與土壤所荷带的病原菌厚垣孢子,都是侵染的來源。(三)过量的氮素肥料,與高的稻粒黑穗病感染率有密切的關係。(四)稻粒黑穗病发生程度的年份间差異可能主要是决定於抽穗至乳熟期的高濕度的持續時間。(五)初步調查的資料表示水稻品種间具有顯著的感病性差別。

Among collections chiefly from North China,different races of Pucciniaglumarum were identified by means of differential hosts used by Gassner & Straibor a set of improved varieties of wheat grown in China. Among 14 improved varieties,marked differences in resistance to stripe rustwere observed.Li-Yung I was resistant to 40 out of 50 collections of striperust,with unstable reactions to 7 collections; Nanking 4197 was resistant to 37 ??collections with unstable reactions to 9 collections; while Yechao 35368 and...

Among collections chiefly from North China,different races of Pucciniaglumarum were identified by means of differential hosts used by Gassner & Straibor a set of improved varieties of wheat grown in China. Among 14 improved varieties,marked differences in resistance to stripe rustwere observed.Li-Yung I was resistant to 40 out of 50 collections of striperust,with unstable reactions to 7 collections; Nanking 4197 was resistant to 37 ??collections with unstable reactions to 9 collections; while Yechao 35368 and Ye-Ta 1885 were susceptible to all except 5 collections from FJymus ckinense.Theinstability of varietal reactions is one of the principal obstacles in identification.As a consequence,tests with 6 improved varieties including Early Premium,Pi-Ma 1,etc.,only 21 out of 50 stripe rust collections could be differentiated into10 distinctly different races (Y 1 to Y10).However,there were great differencesin pathogenicity among different races so far identified.All the 6 improvedvarieties were resistant to race Y 1 and susceptible to race Y 2.The virulenceof other races differed from one another also pronouncedly. Races Y2,Y3,Y4,Y5 ,Y6,Y7 ,and Y8 were collected from wheat; Y 9 andY10 from Agropyron spp.; and Y1 was collected mainly from Elymus chinense(including 1 collection from wheat).Races Y 1,Y 3.Y 4,Y 5,Y 7,Y 8,Y 9,Y 10were found in Hopeh; Y 1,Y 2,Y 6,Y 7 in Shansi; and Y 6 in Shantung. All collections could be readily grouped into 16 different forms if the highestreaction type was taken as a basis for identification (this method of groupingwas adopted by Fang et al).Comparing the results with that of Fang et al,itappeared that reactions of certain varieties,such as Early Premium,Li-Yung 1 tocollections from North China were distinctly different from their reactions tocollections from East China.This suggested strongly that races of stripe rustorganism between these two regions might be quite different. All wheat varieties tested were found to be resistant to stripe rust collectionsfrom Elymus chinense.whereas collections from Elymus sibiricus and Agropyronspp.were capable of attacking many wheat varieties. Single spore infection of stripe rust frequently resulted in sporulation on thewhole leaf blade.This is definitely much more systemic than infections of eitherstem rust or leaf rust organism.Inoculations with single uredospores and mono-uredospore lines often produced mixtures of infection types ranging from resistantto susceptible on same leaf blades.This is analogous to "X" type reactions re-ported in stem rust and leaf rust literature; therefore,"X" type reaction shouldalso be recognized in the study of stripe rust.

1950年以来自华北以及少数其他地区搜集的条銹菌种,不論在Gassner和Straib所用的鑒定寄主或在国內推广品种上鑒定,都可区分出許多不同的类型。所用14个推广品种对于这些条绣菌种的抗病性有着很大的差別;其中以驪英1号最抗病,对50个菌种中的40个菌种是抵抗的,对7个菌种反应不稳定;金大4197次之,对37个菌种是抵抗的,9个菌种反映不稳定;燕交35368及燕大1885除了对5个碱草(Elymus chin-ense)条銹菌种抵抗外,对其他所有菌种的反应都是感染型。品种反应的不稳定,是鑒定工作中的主要困难。加根据早洋麦、农大3号、碧螞1号、碧螞4号、驪英3号、玉皮麦等6个品种的稳定反应加以分析,仅能將50个菌种中的21个区分成10个显著不同的类型。这6个品种对第一类型均为抵抗,对第二类型均为感染,其他类型的致病力介于二者之間。在这10个类型中,类型Y_2,Y_3,Y_4,Y_5,Y_6,Y_7,Y_8采自小麦;类型Y_9,Y_(10)采自Agropyron spp.;类型Y_1主要采自Elymuschinense(包括一个小麦菌种)。河北出現的类型有Y_1,Y_3,Y_4,Y_5,Y_7,Y_8,Y_9,...

1950年以来自华北以及少数其他地区搜集的条銹菌种,不論在Gassner和Straib所用的鑒定寄主或在国內推广品种上鑒定,都可区分出許多不同的类型。所用14个推广品种对于这些条绣菌种的抗病性有着很大的差別;其中以驪英1号最抗病,对50个菌种中的40个菌种是抵抗的,对7个菌种反应不稳定;金大4197次之,对37个菌种是抵抗的,9个菌种反映不稳定;燕交35368及燕大1885除了对5个碱草(Elymus chin-ense)条銹菌种抵抗外,对其他所有菌种的反应都是感染型。品种反应的不稳定,是鑒定工作中的主要困难。加根据早洋麦、农大3号、碧螞1号、碧螞4号、驪英3号、玉皮麦等6个品种的稳定反应加以分析,仅能將50个菌种中的21个区分成10个显著不同的类型。这6个品种对第一类型均为抵抗,对第二类型均为感染,其他类型的致病力介于二者之間。在这10个类型中,类型Y_2,Y_3,Y_4,Y_5,Y_6,Y_7,Y_8采自小麦;类型Y_9,Y_(10)采自Agropyron spp.;类型Y_1主要采自Elymuschinense(包括一个小麦菌种)。河北出現的类型有Y_1,Y_3,Y_4,Y_5,Y_7,Y_8,Y_9,Y_(10);山西出現有类型Y_1,Y_2,Y_6,Y_7;山东出現有类型Y_6。品种不稳定反应除通过选擇反应較为稳定的品种来克服外,同时还須严格掌握温室条件。如以品种的最高反应为标准(如方中达、陈迺用所采用),則可將上面50个菌种分成16个不同的类型。与华东的結果比較,許多品种如早洋麦、驪英1号等对兩个地区条銹病菌的反应适相反,表明华东和华北条锈菌的致病力可能有很大的差別。Elymus chinense的条銹菌与小麦条绣菌的致病力有極大差异,所测定的小麦品种对前者均抵抗。Elymus sibiricus和Agropyron spp.的条绣菌則能正常侵染多种小麦品种的幼苗。条銹菌在小麦叶片內能适当的扩展,較秆銹菌和叶銹菌更有系統性,單孢子接种約在二星期左右可蔓延到整个叶片。同一叶片上常出現抗病和感病的反应,用單孢及單孢菌系接种,得出同样結果。条绣菌的鑒定标准中除了原有的反应型外,还应加入混合型“X”一項。

 
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