助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   distant 在 农作物 分类中 的翻译结果: 查询用时:0.011秒
图标索引 在分类学科中查询
所有学科
农作物
肿瘤学
眼科与耳鼻咽喉科
教育理论与教育管理
成人教育与特殊教育
园艺
生物学
中国古代史
自动化技术
更多类别查询

图标索引 历史查询
 

distant
相关语句
  远缘
    STIMULATING SORGHUM APOMIXIS THROUGH DISTANT POLLINATION AND HORMONE TREATMENT
    远缘授粉和激素处理刺激高粱的无融合生殖
短句来源
    The Physiological Characters of Drought Resistance in Wheat Distant Hybrid Zhong_4 and Zhong_5
    小麦远缘杂种材料中_4、中_5的抗旱生理特性
短句来源
    physiological Reaction of Wheat Distant Hybridsto Water Stress
    小麦远缘杂种材料对水分胁迫的生理反应
短句来源
    Genetic Stability Analyses in Inbred Lines Derived from Distant Hybrid Parthenocarpy with Giemsa C-banding Markers
    远缘杂种孤雌生殖系Giemsa C-带的遗传稳定性分析
短句来源
    Understanding of Some Basic Problems in Utilization of Heterosis of Plant Distant Hybrids by Directly Introducing Exogenous DNA
    直接导入外源DNA利用植物远缘杂种优势若干基本问题的认识
短句来源
更多       
  “distant”译为未确定词的双语例句
    A STUDY ON THE DISTANT CROSS OF WHEAT AND AGROPYRON
    小麦与偃麦草远缘杂交的研究
短句来源
    Genetic Performance of Some Main Characters in Backcrossing Generations of Distant Cross between Winter Wheat and Agropyron
    冬小麦与天蓝偃麦草远缘杂交的回交世代中几个主要性状的遗传表现
短句来源
    THE STUDY ON FERTILITY OF DISTANT HYBRID BETWEEN WHEAT AND CHINESE WILDRYE
    小麦与羊草远缘杂交结实性研究
短句来源
    A study of the effect on wheat distant hybridization by He-Ne laser irradiation
    He-Ne激光对小麦属间杂交影响的研究
短句来源
    Experiment on distant hybridization rape new strain YD16 in different regions
    油菜远缘杂交新品系YD16多点试验结果分析
短句来源
更多       
查询“distant”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  distant
The real-time information of the distant ionosphere can be acquired by using the Wuhan ionospheric oblique backscattering sounding system (WIOBSS), which adopts a discontinuous wave mechanism.
      
One of the most surprising consequences of quantum mechanics is the entanglement of two or more distant particles.
      
2 plant was genetically distant from the rest of the individuals.
      
The collecting sites were geographically distant from each other from south to north: Quwo district, Linfen city; Xiangyuan county, Changzhi; Jinyuan district, Taiyuan city; Yuanping county, Xinzhou city and Fanshi county of Xinzhou.A.
      
Results displayed a more close relationship between leopard and tiger; however, clouded leopard has a comparatively distant relationship form the other two.
      
更多          


1.This paper includes two parts,namely the study of flowering biology and crossing technique in sweet potato,and the 3-year experi- mental results of several hybrid lines, 2.When a “short-day”condition of 8 hours was provided,sweet potato plants flowered about 10-25 days earlier than that under natural condition in Foochow.However,it varied with different varieties, different stages of treatment and environmental factors. 3.The percentage of cross-fertility,based on more than 1000 crosses we made during a 4-year...

1.This paper includes two parts,namely the study of flowering biology and crossing technique in sweet potato,and the 3-year experi- mental results of several hybrid lines, 2.When a “short-day”condition of 8 hours was provided,sweet potato plants flowered about 10-25 days earlier than that under natural condition in Foochow.However,it varied with different varieties, different stages of treatment and environmental factors. 3.The percentage of cross-fertility,based on more than 1000 crosses we made during a 4-year period,was about 45%.It seems that “mixed-pollination” and “repeated pollinaation”tended to increase the percentage of cross-fertility. 4.According to the 3-year experimental results,the hybrid lines, 5414-5 and 5414-8,were found to be hetter than their parents,Triumph 100 and Yoliow Sweet Potato,in yield.The hybrids were also superior to their parents in vine production.It seems that the hybrids were more adaptaple to environment conoitions than their parents. 5.The problem regarding the choice on combinations of parental pairs is discussed.The principle of choosing psrental pairs from geo- graphically distant locaties,propossd by I.V.Michurin,is a guide to sove this problem.A great number of hybrid lines are undergoing study.

1.本文包括两部分,即甘薯开花生物学和有性杂交技术的研究及几个杂交系的三年试验结果。2.当给以8小时短日条件,甘薯植株比在福州自然条件下的提早开花10——25天。但因品种、处理时期及环境条件而不同。3.根据四年来杂交一千余朵花的结果,甘薯杂交成功率约为45%。混合授粉及重复授粉似乎有增加杂交成功率的趋势。4.根据三年试验结果,发现二个杂交系,即5414——5和5414——8,在块根产量上比亲本胜利百号及黄薯都高。在蔓的产量上,杂交系亦比较亲本为优。而且这两个杂交系似乎比亲本具有较大适应不同环境条件的能力。5.关于选择亲本组合的问题曾加以讨论。米丘林所提出关于选择远地亲本的原则,对于这个问题的解决具有指导的作用。许多杂交系尚在继续研究中。

By means of crossing two forms of wild rice (Oryza sativa L. f. spontanea) : "red-awned" and "Tengqiao local" from the Island of Hainan as the female parent with cultivars as the male and repeated back-crossing we have obtained several male-sterile lines of rice. We also succeeded in selecting some sterility-maintainers and fertility-restorers for them respectively to facilitate the utilization of heterosis in rice.It is noteworthy that the two forms of wild rice have different kinds of cytoplasm and they respond...

By means of crossing two forms of wild rice (Oryza sativa L. f. spontanea) : "red-awned" and "Tengqiao local" from the Island of Hainan as the female parent with cultivars as the male and repeated back-crossing we have obtained several male-sterile lines of rice. We also succeeded in selecting some sterility-maintainers and fertility-restorers for them respectively to facilitate the utilization of heterosis in rice.It is noteworthy that the two forms of wild rice have different kinds of cytoplasm and they respond differentially to test crosses. Therefore the male-sterile lines derived from the two wild rices have quite different restorer lines.From genetical and cytological studies it is evident that male sterility is not controlled by one or a few genes of sterility. But rather male sterility is determined by the nucleo-cytoplasmic contradictions (incompatibility) between the two parental forms: the wild rice as the female parent and the cultivar as the male. Hence substitution of cell nucleus by means of repeated back-crossing is an effective method of breeding male-sterile lines in rice. Inheritance of male sterility in hybrid progenies of crossing wild rice with cultivars and F2 of male-sterile lines × fertility-restorers is shown as if in the mode of inheritance of "quantitative characters". The segregation of fertility versus sterility behaves as continuous variation with numerous gradations from normally fertile to wholly sterile. This fact accentuates the invalidity of such a theory, proposing one or a few "ms" genes as the explanation of the origin of male sterility.Our investigation suggests, that the metabolic disorders as the result of nucleo-cytoplasmic contradictions are the cause of pollen sterility. Therefore, genetic affinity determines whether a variety being tested will be "maintainer" or "restorer" for a given male-sterile line. If the variety has close affinity and a similar cytoplasm with the wild parent, it may restore the right nucleo-cytoplasmic interrelation, normalize the metabolic processes in the hybrid and re-establish normal development of pollen grains. On the contrary, if the variety has distant affinity and a dissimilar cytoplasm with the wild parent, it will fail to normalize microsporogenesis in the hybrid and will serve as a maintainer of sterility.Thus the Marxist materialistic dialectics aids us in finding a new approach to the solution of problems of breeding hybrid rice.

以属于我国南方分布的普通野生稻(Oryza sativa L.f.spontanea)的红芒野生稻和藤桥野生稻作母本,与栽培稻不同品种作父本杂交和连续回交,进行核代换,培育出了相应的雄性不育系。并已获得相应的恢复系。在选育三系的过程中证明我国南方的普通野生稻在细胞质的生理和遗传特性上存在着不同类型,对三系选育有不同的利用价值。 从有关的遗传学及细胞学研究说明这种雄性不育性不是一种简单的遗传特性,而是牵涉到一系列遗传、生理特性的异常,有着复杂的遗传基础。不育性和恢复性表现出类似于数量性状的遗传行为。作者认为雄性不育性是参加核代换亲本的遗传基础相互作用的结果,是远缘核质不亲和性的表现。当远缘的核质结合时产生雄性不育,而近缘的核质结合时造成花粉育性的恢复,因此三系配套与亲本亲缘的远近密切相关,从而批判了旧的三系理论及其所设想的育种方法。

More than 30 male sterile lines of rice with different cytoplasmic sourceshave been developed in China.All of them were of the nucleus-cytopla-sm-interacting type developed by the method of nucleus substitution.1.According to the interrelationship between restoration and maintai-nance,these lines could be classified into 3 types,i.e.the wild abortivetype,the Red Lily type and the Tian-Ⅰ type.The current commerciallyused hybrid rices are mainly from the wild abortive type.2.According to the sources of cytoplasm,the...

More than 30 male sterile lines of rice with different cytoplasmic sourceshave been developed in China.All of them were of the nucleus-cytopla-sm-interacting type developed by the method of nucleus substitution.1.According to the interrelationship between restoration and maintai-nance,these lines could be classified into 3 types,i.e.the wild abortivetype,the Red Lily type and the Tian-Ⅰ type.The current commerciallyused hybrid rices are mainly from the wild abortive type.2.According to the sources of cytoplasm,the sterile lines could be cla-ssified into 6 groups,i.e.(?)nucleus substitution lines between species;(2)substitution lines between cultivated rice and wild rice,with thenucleus of the former;(3)substitution lines between cultivated rice and wildrice,with the nucleus of the latter;(4)substitution lines of the indicatype with nucleus replaced by that of the japonica type;(5)substi-tution lines of the japonica type with nucleus replaced by that of theindica type;and(6)intraspecific substitution lines between indica andindica or japonica and japonica types coming from distant geographical orevolutionary origins.Most of the current male sterile lines of rice comefrom the second group but only a few come from the fifth.Some sterilematerials were developed from the first and third groups but no stablesterile lines have been produced as yet.3.The sterile lines could be classified into 3 groups according to thedegree of pollen abortion,i.e.those with uni-nucleate stage abortion,bi-nucleate stage abortion and tri-nucleate stage abortion.4.The sterile lines could be classified into 2 groups according to thepercentage of fertile pollens of the F_1 generation hybrid.Those of thesporophytic sterile group give 100 percent fertile pollens in the F_1 gene- ration;male sterile segregates appear only in the F_2 generation.Thoseof the gametophytic sterile type give 50 percent fertile pollens when crossedwith its restoring lines;the seed-setting of their selfed progeny is normaland no male sterile individual appears in the F_2 generation.

我国已选育出不同质源的水稻雄性不育系30多种。本文是试图对水稻雄性不育系的分类所进行的初步探讨。按恢保关系分类:目前可以明显判断为不同质类的有野败型、红莲型和滇一型。按细胞质源分类:大致可分为种间核置换、野生稻和栽培之间的核置换、栽培稻和野生稻之间的核置换、籼稻和粳稻之间的核置换、籼稻和粳稻之间的核置换、籼籼间或粳粳间的核置换。按花粉败育程度分类:可分为单核期败育、二核期败育、三核期败育。按杂种一代的花粉可育率分类:可分为孢子体不育和配子体不育。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关distant的内容
在知识搜索中查有关distant的内容
在数字搜索中查有关distant的内容
在概念知识元中查有关distant的内容
在学术趋势中查有关distant的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社