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japonica
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  粳稻
    Correlation analyses of chalkiness and other characters in Japonica rice
    粳稻垩白与产量性状、品质性状及其它性状的相关分析
短句来源
    Genetic Analysis for Blast Resistance of Two Japonica Rice Varieties
    二个粳稻品种抗稻瘟病遗传特性的分析
短句来源
    Genetic Analysis of Blast Resistance in Japonica Rice Landrace Heikezijing from Taihu Region
    太湖流域粳稻地方品种黑壳子粳对稻瘟病抗性的遗传分析
短句来源
    Inheritance of Whitebacked Planthopper Resistance in Chinese Japonica Rice Chunjiang 06
    中国粳稻春江06抗白背飞虱的遗传(英文)
短句来源
    Genetic Analysis and Mapping of Blast-resistance Genes in japonica Rice Yunyin from Yunnan Province
    粳稻云引抗稻瘟病基因的遗传分析及其定位
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  “japonica”译为未确定词的双语例句
    Studies on the Development of Female Reproductive System and the Artificial Diets in Propylea Japonica (Thunberg)
    龟纹瓢虫(Propylaea japonica)雌性生殖系统发育及人工饲料的研究
短句来源
    STUDIES ON THE LADY-BEETLE PROPYLAEA JAPONICA (Thunbery)——I.THE MORPHOLOGY AND GEOGRAPHICAL DISTRIBUTION
    龟纹瓢虫Propylaea japonica(Thunbery)的研究——Ⅰ.形态及地理分布
短句来源
    Discovery Of Cuscuta japonica Choisy On Tobacco In Jilin Province
    吉林省烟草上发现日本菟丝子(Cuscuta japonica Choisy)
短句来源
    Seventy-three Rhizoctonia isolates were obtained from 6 species of infected turf-grasses,Lolium perenne,Poa pratensis,Festuca arundinacea,Agrostis palustris,Cynodon dactylon,and Zoysia japonica,in Shanghai,Zhejiang,Shandong,Henan and Shaanxi during 2003 to 2005.The nuclei were stained to determine the number in vegetative hyphal cells by slide culture method and DAPI staining nuclear technique.
    2003~2005年从上海市、浙江省、山东省、河南省和陕西省草坪褐斑病的97份病株标本中,分离得到了73个丝核菌分离物,其寄主包括多年生黑麦草Lolium perenne、高羊茅Festuca arundinacea、草地早熟禾Poa pratensis、匍匐翦股颍Agrostis palustris、结缕草Zoysia japonica和狗牙根Cynodon dactylon。
短句来源
    Nakal,Baphicacanthus cusia,Carpesium abrotanoides L.,Youngia japonica(Linn.)
    Nakal)、马兰(Baphicacanthus cusia)、天名精(Carpesium abrotanoides L.) 、黄鹌菜(Youngia japonica(Linn.)
短句来源
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  japonica
Ficus hispida + Antidesma bunius + Mallotus barbatus + Ficus cunia + Saurauia tristyla + Mallotus philippinensis + Maesa japonica + Ficus hirta + Alchornea rugosa + Ficus fulva + Mallotus apelta; II.
      
Ardisia japonica + Psychotria rubra + Vitex quinata + Cephalanthus occidentalis + Pithecellobium lucidum + Mycetia sinensis.
      
Differentiation of Indica-Japonica rice revealed by insertion/deletion (InDel) fragments obtained from the comparative genomic s
      
Results indicated that of the 45 InDel primer pairs, 41 can accurately identify Indica and Japonica rice varieties with a reliability of over 80%.
      
Schistosomiasis japonica, a zoonosis caused by Schistosoma japonicum, is endemic to the Philippines and China.
      
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The Delphacodes striatella F., is widely distributed in Soochow, Wusih, Changchowof the Taihu Lake rice region in Kiangsu. It is one of the worst pests of our rice crop.The crops from the double cropping early rice and single cropping middle rice are injuredeven more severely. By our observations, the host plant of this small brown planthopper is changedseasonally. The most common hosts are rice in summer or autumn and wheat, Alope-curus aequalis Sobol. in spring or winter. Supplementary hosts include barley,...

The Delphacodes striatella F., is widely distributed in Soochow, Wusih, Changchowof the Taihu Lake rice region in Kiangsu. It is one of the worst pests of our rice crop.The crops from the double cropping early rice and single cropping middle rice are injuredeven more severely. By our observations, the host plant of this small brown planthopper is changedseasonally. The most common hosts are rice in summer or autumn and wheat, Alope-curus aequalis Sobol. in spring or winter. Supplementary hosts include barley, Leersiajaponica Makino, Zoysia japonica Steud., etc. According to the degree of embryonic development the growth of the egg is dis-tinguished in six stages, such as: Blastoderm, Germ band, Yellow spot, Blastokinesis,Eye spot, Accessory-podite and Hatching. The development of nymph goes through about five instars, it becomes adult afterthe fifth moult. The period of each stage is limited by temperature. At 25--26℃, theegg stage is about eight days, the nymph stage is about sixteen days, the adult is aboutfourteen days, the adult is about seven days. The sexual muturation period of the Brachypterous type is 1--2 days earlier than theLongipennate. The female copulates with the male immediately. The eggs are depositedinto the leaf sheath or beside the leaf mid-rib. The egg streak consists of double rowof eggs. Delphacodes striatella F. produces six generations per year. The first generation isfrom late April to early July. The second generation is from early June to early July.The third generation is from early July to August. The fourth generation is from earlyAugust to middle September. The fifth generation is from early September to middleOctober. The nymph of the sixth generation hatches in early October. During the3rd and 4th instars it hibernates on wheat, alfalfa or weeds. The activity of hymenpterous parasites, nematodes and spider in June and July sup-presses the multiplication of the small brown planthopper. The difference of the popula-tion in some regions or in the field is closely related to the nutrition of the host and themicroclimate. The results of laboratory and field tests indicated that: spraying 6% γ wettableB.H.C. (1:200), 46.6& Folidol (1:3000) and 15% wettable Malathion (1:1500) at100 kg of the solutions per mou, gave very successful control.

1.灰稻虱是苏南稻区每年普遍发生为害和暴发年猖獗成灾的主要害虫。由于其早在6—7月间已进入全年发生盛期,故对双季早稻和单季中稻的为害特别严重。 2.该虫的主要寄主 夏秋季为水稻Oryza sativa L.,冬春季为小麦Triticum aestivum L.、看麦娘Alopecurus aequalis Sobol.。其它寄主有稗Echinochloa crus-galli Beauv.、李氏游草Leersia japonicaMakino等十种。 3.灰稻虱在苏南稻区一年发生六代。发生时期:第一代为4月下旬—6月上旬,第二代为6月上旬—7月上旬,第三代为7月上旬—8月上旬,第四代为8月上旬—9月中旬,第五代为9月上旬—10月中旬,第六代若虫在10月上、中旬孵化,11月上、中旬以3—4龄若虫于麦田、紫云英田或沟埂杂草处越冬,翌年3月中旬—4月中旬化为成虫。 4.灰稻虱在水稻田内的消长峰态可以分为“双峰”和“单峰”两种。高峰的出现期一般总是在水稻营养状况良好的分蘖盛期和孕穗期。 5.早夏发生量的多寡,除与水稻早期栽培的面积和营养状况密切有关外,还与冬前虫口基数和1—3月间的气温等综合因子有关。6—7月间,寄生...

1.灰稻虱是苏南稻区每年普遍发生为害和暴发年猖獗成灾的主要害虫。由于其早在6—7月间已进入全年发生盛期,故对双季早稻和单季中稻的为害特别严重。 2.该虫的主要寄主 夏秋季为水稻Oryza sativa L.,冬春季为小麦Triticum aestivum L.、看麦娘Alopecurus aequalis Sobol.。其它寄主有稗Echinochloa crus-galli Beauv.、李氏游草Leersia japonicaMakino等十种。 3.灰稻虱在苏南稻区一年发生六代。发生时期:第一代为4月下旬—6月上旬,第二代为6月上旬—7月上旬,第三代为7月上旬—8月上旬,第四代为8月上旬—9月中旬,第五代为9月上旬—10月中旬,第六代若虫在10月上、中旬孵化,11月上、中旬以3—4龄若虫于麦田、紫云英田或沟埂杂草处越冬,翌年3月中旬—4月中旬化为成虫。 4.灰稻虱在水稻田内的消长峰态可以分为“双峰”和“单峰”两种。高峰的出现期一般总是在水稻营养状况良好的分蘖盛期和孕穗期。 5.早夏发生量的多寡,除与水稻早期栽培的面积和营养状况密切有关外,还与冬前虫口基数和1—3月间的气温等综合因子有关。6—7月间,寄生蜂、线虫和蜘蛛类等天敌的活动,对灰稻虱的增殖也有一定的抑制作用。 6.个体发育中,卵期还可凭胚胎发育的特征划分为胚盘、胚带、黄斑、反转、眼点、附肢形成和孵化等七期。各虫?

The downy mildew of lettuce is a widely distributed disease in Chengtu. It is found on lettuce all the year around, but the severest infection occurs during the early spring. The viability of sporangia is lost in 7-10 days. In the diseased, tissues of leaf, stem and seed, no oospore has been found. Field observations and experimental results indicate, that hibernating organ of the pathogene might be mycelia in the infected seed and the infected tissue in soil, both of which were considered to be the primary...

The downy mildew of lettuce is a widely distributed disease in Chengtu. It is found on lettuce all the year around, but the severest infection occurs during the early spring. The viability of sporangia is lost in 7-10 days. In the diseased, tissues of leaf, stem and seed, no oospore has been found. Field observations and experimental results indicate, that hibernating organ of the pathogene might be mycelia in the infected seed and the infected tissue in soil, both of which were considered to be the primary sources of infection. In Chengtu there is no severe winter and summer, the climatic condition are favorable for the growth of Bremia lactucae on lettuce in the fields, and the lettuce is cultivated all the whole year round. Field observations indicate that the pathogene is so able to infect the plant in all seasons. Over-wintering or over-summering in vitro is therefore unnecessary. Six species and a variety of Compositae were artificially inoculated, the results show that, Lactuca chinensis, Crepis japonica, Taraxacum mongolicum, Sonchus oleraceua, Sassurea offinis and. Lactuca sativa (foliage lettuce) are immune, the Lactuca sativa L. var. angustana is susceptible and it appeares that there are varietal differences in susceptibility.

成都萵笋霜霉病菌孢子囊寿命很短,生活力只能維持7—10天。在病叶、茎及种子中,均未发現卵孢子。其初侵染来源可能是种子或病組織中潛藏的菌絲。調查結果表明,萵笋霜霉病菌可以藉气流或水流終年侵染,不在活体外休眠。 萵笋霜霉病菌寄主范围小,在6种菊科植物上接种未获成功,表現出明显的专化現象,品种間抗病性亦有显著的差異。

Rice blast is one of the major diseases of rice in China.Since the 1960's it has frequently been found that some resistant cultivars gra- dually lost their resistance to this disease during the course of their cultivation. During the last four years,the screening of the differential varie- ties for the identification of the races from 212 rice varieties grown in the various parts of the country has been carried out by using 1739 monoconidial isolates of the samples collected from 21 provinces and autonomous...

Rice blast is one of the major diseases of rice in China.Since the 1960's it has frequently been found that some resistant cultivars gra- dually lost their resistance to this disease during the course of their cultivation. During the last four years,the screening of the differential varie- ties for the identification of the races from 212 rice varieties grown in the various parts of the country has been carried out by using 1739 monoconidial isolates of the samples collected from 21 provinces and autonomous regions.Seven varieties,Tetep,Zhenlong 13,Sifeng43, Dongnong 363,Kanto 51,Hejiang 18,Ligiang-sintuanheigu were em- ployed as the differential varieties in China.Meanwhile,828 isolates from monoconidial cultures collected from 23 provinces and autonomous re- gions were identified on the Chinese differential varieties.The results pointed out that the isolates can be divided into 7 groups with 43 ra- ces,among which,race Zhong Gl is widely distributed and appears in high frequency,indicating that it is the dominant race in this country. The composition of the races in indica rice growing areas and japonica -indica rice mixing growing regions in South China is much complicated than that in japonica rice growing region in North China.It seems that the indica races (with S reaction on indica differentials) in the South is much virulent than that in the North. Preliminary research shows that the main cause for the loss of resis- tance in a variety is the appearance of new virulent races.Unfavoura- ble environment and improper cultivation are not factors to be ignored that speed up the loss of resistance in the variety. The variability of isolates of P.oryzae was also studied with the different monoconidial cultures originating from the same disease lesion and the cultures derived from single cells of conidiospore.The patho- genicity of the isolates either cultured for several generations or from reisolation of the original isolates from the fresh disease lesions was also tested.The results indicated that although some changes in pathogenicity were observed,most such isolates showed relative stability. In the same time,after repeated trials,some comparatively stable iso- lates have been selected for the basis of further studies on the genetic analysis of disease resistance.

稻瘟病是我国水稻主要病害之一,六十年代以来,在生产上不断发现一些抗稻瘟病的品种,但在推广、栽种的过程中逐渐丧失了抗病性。为探明其丧失原因及防治对策,1976年起开展了全国稻瘟病菌生理小种的协作研究。四年来,先后用21个省、市、区的1739个单孢分离物对212个水稻品种进行了筛选测定,从中选出特特勃、珍龙13、四丰43、东农363、关东51号、合江18号和丽江新团黑谷7个品种为中国稻瘟病菌生理小种的鉴别品种,并从23个省、市、区提供的827个单孢分离物中鉴定出7群43个中国小种,其中以“ZG_1”小种分布最广,出现频率最高,是我国的优势小种。南方籼稻区和籼、粳稻混栽区的小种组成较北方粳稻区复杂,而籼型小种(在籼稻鉴别品种上为 S 反应的小种),主要分布在南方稻区。初步研究表明品种抗病性的丧失,主要是由于出现了能侵染该品种的新小种所致。不良的环境条件和栽培措施也是加速品种抗性丧失的一个不可忽视的因素。通过对同一病标样上分离的各单孢培养菌,同一单孢不同细胞发育而成的培养菌、同一分离物转管代次及单孢分离物接种后再分离菌的致病性变异观察,初步看到稻瘟病菌致病性虽有变异的情况,但多数情况是稳定的。同时,通过反复测定,初步...

稻瘟病是我国水稻主要病害之一,六十年代以来,在生产上不断发现一些抗稻瘟病的品种,但在推广、栽种的过程中逐渐丧失了抗病性。为探明其丧失原因及防治对策,1976年起开展了全国稻瘟病菌生理小种的协作研究。四年来,先后用21个省、市、区的1739个单孢分离物对212个水稻品种进行了筛选测定,从中选出特特勃、珍龙13、四丰43、东农363、关东51号、合江18号和丽江新团黑谷7个品种为中国稻瘟病菌生理小种的鉴别品种,并从23个省、市、区提供的827个单孢分离物中鉴定出7群43个中国小种,其中以“ZG_1”小种分布最广,出现频率最高,是我国的优势小种。南方籼稻区和籼、粳稻混栽区的小种组成较北方粳稻区复杂,而籼型小种(在籼稻鉴别品种上为 S 反应的小种),主要分布在南方稻区。初步研究表明品种抗病性的丧失,主要是由于出现了能侵染该品种的新小种所致。不良的环境条件和栽培措施也是加速品种抗性丧失的一个不可忽视的因素。通过对同一病标样上分离的各单孢培养菌,同一单孢不同细胞发育而成的培养菌、同一分离物转管代次及单孢分离物接种后再分离菌的致病性变异观察,初步看到稻瘟病菌致病性虽有变异的情况,但多数情况是稳定的。同时,通过反复测定,初步选出一些较为稳定的分离物,为今后开展品种抗病性的基因分析提供了必要的条件。

 
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