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mildew
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  白粉病
    cDNA library construction of Triticum aestivum-Haynaldia villosa 6VS/6AL translocation line, and molecular cloning of powdery mildew resistance relative genes in 6VS/6AL translocation line
    小麦—族毛麦6VS/6AL易位系叶片cDNA文库构建及6VS/6AL易位系中抗白粉病相关基因的克隆
短句来源
    Study on the application of molecular marker technique in breeding wheat for powdery mildew resistance and constructing DNA fingerfrinting of wheat
    分子标记技术在小麦抗白粉病育种及指纹图谱分析中的应用研究
短句来源
    cDNA Library Construction of Wheat Near Isogenic Line with Disease Resistance to Powdery Mildew and Full-length cDNA Cloning of the Genes Related to Disease Resistance
    小麦抗白粉病近等基因系cDNA文库构建及抗病相关基因的全长cDNA克隆
短句来源
    Analysis, Location and Molecular Marker of Genes for Resistance to Powdery Mildew in Wheat
    小麦白粉病抗性基因分析定位及分子标记
短句来源
    Chromosome Location and Molecular Marker of Resistant Gene to Powdey Mildew from Elytrigia Intermedium
    中间偃麦草抗白粉病基因的染色体定位及分子标记鉴定
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  “mildew”译为未确定词的双语例句
    The Interaction between Wheat Varieties and Powdery Mildew of Cereals (Erysiphe Gramiunis f. sp.Tritici)——Ⅱ. Analysis of the Definitive Genotypes of Wheat Varieties
    小麦品种与小麦白粉菌的相互作用——Ⅱ.小麦品种的限定性基因型分析
短句来源
    Genetic Analysis of the Resistance of two Wheat Lines to Powdery Mildew
    小麦抗源材料对白粉病菌的抗性遗传分析
短句来源
    Postulation of Resistance Genes to Powdery Mildew in 17 Winter Wheat Cultivars
    17个小麦品种抗白粉性基因的推导
短句来源
    Genetic Analysis of the Resistance of the Wheat variety Bainong 64 to Slow Powdery Mildew
    ‘百农64’慢白粉性的遗传分析
短句来源
    2.In this research, three waxy genes and the resistance gene Pm21 which is anti-wheat powdery mildew and gene Nib-8 which is anti-wheat yellow mosaic virus were pyramided in wheat by rolling convergent backcross combining with genetic markers selection.
    2、利用滚动回交与遗传标记相结合的方法,将小麦抗白粉性基因Pm21、小麦抗黄花叶病性基因Nib-8和控制小麦糯性的三个基因进行聚合,成功得到三类基因聚合体6株,聚合Nib-8、wx基因26株,聚合Pm21、wx基因单株13株。
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  mildew
It can be degraded by microorganisms such as mildew.
      
A mildew strain with high cellulase activity was isolated from mildewy maize cob and classified as Aspergillus glaucus XC9 by morphological and 18S rRNA gene sequence analyses.
      
Endogenous Abscisic Acid in Wheat Plants upon Inoculation with the Powdery Mildew Causative Agent (Erysiphe graminisf.
      
We studied the dynamics of the abscisic acid content in above-ground parts of wheat cultivars with different resistance against powdery mildew.
      
It was assayed by the HPLC method in healthy and diseased (inoculated by the powdery mildew causative agent) plants (from inoculation to the stage of pathogen spore formation).
      
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The salted Chinese cabbage is a special type for salting processes of the Pak-Choi Chinese cabbage. Four representative varieties from the lower valley of Yangtze-Hwai river, i. e., Nanking Kao-Zhuon, Hanchow Pio-Keng-Bai, Kaochun Ma-Er-Dor and Yanchow Hwa-Yi-Da-Tsai, were chosen for a diallel crossing experiment according to Griffing's method one (model 1). The field experiments were held in Nanking in 1974 and in Nanking and Yanchow respectively in 1975.1. Generally, the yield, downy mildew-resistance,...

The salted Chinese cabbage is a special type for salting processes of the Pak-Choi Chinese cabbage. Four representative varieties from the lower valley of Yangtze-Hwai river, i. e., Nanking Kao-Zhuon, Hanchow Pio-Keng-Bai, Kaochun Ma-Er-Dor and Yanchow Hwa-Yi-Da-Tsai, were chosen for a diallel crossing experiment according to Griffing's method one (model 1). The field experiments were held in Nanking in 1974 and in Nanking and Yanchow respectively in 1975.1. Generally, the yield, downy mildew-resistance, virus-resistance and bacterial soft rot-resistance of the salted Chinese cabbage F1 all show the mid-type of their parents, and no significant differences between each pair of reciprocals. There are some crosses with heterosis and some with reciprocal effect, but some are not consistent between different years or locations. After comparison, Kao × Pio (of entire leaf type with white flat petiole), was selected for Nanking region, and Pio X Hwa and Hwa × Kao (of deeply flaky leaf type with white round petiole), for Zhangkian-Yanchow region because of their moderate disease-resistance and high yielding ability by transgressing upper parent 20.1-22.1%, 12.7-21.6% and 6.0-31.3% respectively.2. As for yield the significance of g.c.a. and of s.c.a. are consistent between two years, but the reciprocal effectsare not. There are greater and shifting s.c.a. for Kao and Pio, greater g.c.a. and stable s.c.a. for Hwa. These three varieties are all better parents, when used in crossing the reciprocal effect should not be neglected.3. In yield component of three selected crosses there are significant s.c.a. and r for Kao ×Pio and r for Pio×Hwa, but not for Hwa × Kao besides the significant g.c.a. for them. The g.c.a., s.c.a. and r all should not be neglected in the design of crossing because of different crosses having their own specialities.4. The estimates of heritability for yield in broad sense are about 76.7-81.7% indicating the possibility of high yielding crosses to be persistent from year to year.

本文旨在分析江淮下游酶白菜代表品种的杂种优势与配合力。产量、抗病性的杂种优势因组合、正反交而异。有些组合的表现还因年份、地点等环境条件而不同。评选出优势强而稳的高×瓢、瓢×花、花×高组合可供生产应用。亲本间在一般配合力、特殊配合力以及它们的波动程度上都有各自的特点,选配组合时对一般配合力、特殊配合力以及正反交效应都需注意。产量杂种优势利用的广义遗传力估计值为76.7—81.7%。

Mexican wheat cultivars have been introduced to our country andplanted in many regions for more than a decade.Some of them performedvery well:with good adaptability,cold tolerant,and rust resistant.|As the environmental conditions of our country differ from those ofMexico,their agronomic characteristics changed greatly.For example,with the decrease of the growing period,there was a decrease of theplant height and the weight of 1000 grains was decreased also.The weight of 1000 grains is one of important factors...

Mexican wheat cultivars have been introduced to our country andplanted in many regions for more than a decade.Some of them performedvery well:with good adaptability,cold tolerant,and rust resistant.|As the environmental conditions of our country differ from those ofMexico,their agronomic characteristics changed greatly.For example,with the decrease of the growing period,there was a decrease of theplant height and the weight of 1000 grains was decreased also.The weight of 1000 grains is one of important factors determiningyield.Therefore,The change of the weight of 1000 grains of a varietyin different,regions indicates its adoptability to ecological factors.Therelationship between the 1000 grain weight of the vareity“Tanori F-71”and the environmental conditions was thus studied.The results showeda positive correlation between the growing period from seedling to head-ing of cultivars and the 1000 grain weight in north China,r1=0.5962~(**)(n=21).In the north region of Yangtze river,there is a negative corr-elation between ∑T~* from heading to maturity and the 1000 grain weight,r2=-0.5323~(**)(n=58).In South China,decrease of the 1000 grain wei-ght is mainly resulted from the attack of wheat scab and powdery mildew.Region with an average 1000 grain weight equal to or over 80% thatof stock seed is cousidered to be adaptable region.Accordingly,regionsadaptable for growing Mexican wheat in our country are as follows:QingZang highland spring wheat region;Yun Gui highland wheat region;North China spring wheat region;and to a less extent,South China earlywinter wheat region and Xin Jiang wheat region.

本文是以墨西哥小麦品种“他诺瑞”(Tanori F-71)为例,对其在我国种植期间千粒重的变化与生态条件所作的相关和回归分析。结果证明,“他诺瑞”在我国北方春播地区种植,由于纬度高,春季气温回升快,出苗至抽穗阶段的生育天数较原产地缩短了20~42天,其千粒重与这一段的生育天数成显著的正相关,γ_1=0.5962~(**);整个长江以北地区,“他诺瑞”的千粒重还与抽穗至成熟阶段日最高温度≥30℃时,30℃以上的积温值成显著的负相关,γ_2=-0.5323~(**);南方地区引起千粒重下降的主要原因是赤霉病、白粉病的危害。以各麦区种植墨西哥小麦的平均千粒重达到原种平均千粒重的80%划为适应区,指出我国适于种植墨西哥小麦的地区有青藏高原春麦区、云贵高原麦区、北部春麦区,其次是华南早熟冬麦区和新疆麦区。

The wheat varieties "Siyang 117" and "Siyang 936" with high yield capacity have been successively bred and released.The success of breeding high yielding varieties in North Hai Valley depends first of all on the decision of reasonable objectives, which mast have the characteristics of semi-winter growth-habit, relatively early maturity, resistance to rusts and powdery mildew, and coordinated improvement of yield components with ideotype characters.Various parental materials of different ecotypes, from...

The wheat varieties "Siyang 117" and "Siyang 936" with high yield capacity have been successively bred and released.The success of breeding high yielding varieties in North Hai Valley depends first of all on the decision of reasonable objectives, which mast have the characteristics of semi-winter growth-habit, relatively early maturity, resistance to rusts and powdery mildew, and coordinated improvement of yield components with ideotype characters.Various parental materials of different ecotypes, from north and south regions, with winter and spring habits, were used, and basic parents were strictly chosen. In order to increase variability, multiple or complex hybrid combinations should be developed.Selecting superior hybrids in early generations, enlarging the progenies of promising ones, and intensive selection among a large number of lines in F_6 and F_7 generations, have been proved to be effective.

我们育成了适于淮北地区的“泗阳117”、“泗阳936”等小麦新品种,高产栽培亩产超过1200斤。体会如下:(一)育种目标的设计:应以生态型为前提,以综合丰产性为基础,以株型为突破口。淮北地区小麦品种的基本生态特性应为半冬性,中、早熟,抗锈病与白粉病,熟相正常。产量结构在强调综合丰产性的基础上,着重抓穗数与粒重两个因素,粒数亦有潜力。株型要求高矮适中(80—90cm),茎节配置合理,即下部节间矮壮,中部缩短,上部比例适度伸长。(二)种质资源的选配:一是广泛采用南北不同生态型、冬性(半冬性)与春性类型的品种进行杂交;二是在严格选定基础亲本的前提下,选配相应的补偿亲本;三是要善于发现、创造、利用具有特色的材料,进行复合阶梯杂交。(三)杂交后代评选:有重点地选留材料,扩大群体,加强高世代连续选择。

 
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