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rice genotypes
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  水稻基因型
     Three rice genotypes differing in nitrogen absorption efficiency(NAE),namely Wuyou 244 low in NAE,R83-12 medium in NAE and Shuiyuan 349 high in NAE,were planted in a pot experiment to investigate physiological and morphological characteristics of the roots of these plants growing with optimum nitrogen supply at the jointing stage,and their relationships with NAE.
     土培盆栽试验下,采用3个氮素吸收效率(NAE)有显著差异的水稻基因型五优244(低NAE)、R83-12(中NAE)和水源349(高NAE)为材料,研究了水稻拔节期根系形态特征和生理特性的基因型差异及其与高效氮素吸收的关系。
短句来源
     Application of Automated Fluorescent labelled System for SSLPs Analysis of Different Rice Genotypes
     应用自动荧光测序系统分析不同水稻基因型SSLPs
短句来源
     Rice genotypes with different P-efficiency had varietal difference in uptake and use ability of P and Zn.
     结果表明,不同耐低磷水稻基因型不仅吸收利用磷的能力不同,对锌的吸收利用也存在差异。
短句来源
     By using 15 microsatellite DNA primers, Simple Sequence Length Polymorphism(SSLPs) of 13 rice genotypes were analyzed and detected with different methods.
     用 1 5对水稻微卫星引物 ,对 1 3个不同类型及来源的水稻基因型材料进行了简单序列重复片段长度的多态性(SSLPs)分析 ,并与不同的检测和分析方法进行了比较。
短句来源
     Both Al-P and Fe-P treatments significantly decreased the plant biomass, total P uptake, and plant total P concentration of eight rice genotypes in comparison with the P-sufficient treatment.
     与正常供磷处理相比,Al-P和Fe-P处理都显著降低了8个水稻基因型的生物量、吸磷量和植株磷浓度。
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  水稻品种
     Different levels of N concentration (4, 10, 40 mg N L~(-1)) were supplied to three rice genotypes (4007, Nanguang and ELIO) that had shown different N use efficiencies.
     在3个氮水平(4、10、40 mg N L~(-1))下,研究了氮素吸收效率不同的3个水稻品种(高吸氮品种ELIO;低吸氮品种4007、南光)的叶片光合特性的差异以及与氮素营养的关系。
短句来源
     Solution culture experiments were carried out to study the kinetics of NO 3 - uptake by different rice genotypes, including 12 varieties of wetland rice and 2 varieties of upland rice, and the effects of NH 4 + on NO 3 - uptake were assessed.
     采用水培方法研究了 12个水稻品种和 2个旱稻品种在苗期 (2 0d)的NO3 -吸收动力学特性及添加吸收液中NH4+ 对NO3 -吸收的影响。
短句来源
     Ammonia Volatilization from Shoots of Different Rice Genotypes with Different Nitrogen Use Efficiency after Flowering
     不同氮肥利用效率水稻品种开花后地上部分氨挥发研究
短句来源
     Eco-Physiological Characteristics and Regulation of Nitrogen Uptake and Utilization Efficiency in Different Rice Genotypes
     水稻品种氮素吸收利用效率的生理生态特征及调控研究
短句来源
     Study on Nitrogen Uptake Efficiency of Different Rice Genotypes in Jilin Province
     吉林省不同水稻品种氮素效率研究
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  基因型水稻
     Effect of HCO_3~- on root growth and nutrient absorption of different rice genotypes.
     HCO_3~-对不同基因型水稻根生长及养分吸收分配的影响
短句来源
     Kinetic character of the uptake of phosph orus fractions by different rice genotypes are compared in the present study and the results showed that Jinyou 77 posed uptake all the phosphorus fractions fas ter than did Shanyou 63.
     将湖水中的磷划分为总磷(TP)、总溶解反应磷(TSP)、总反应磷(TRP)、溶解性反应磷(SRP)4种不同的磷形态,研究比较了两种不同基因型水稻幼苗期对天然水体中各磷形态的摄取动力学行为,结果表明金优77较汕优63能更快速而有效地利用各磷形态。
短句来源
     1. Grain filling characteristics and endosperm structures of different rice genotypes With indica and japonica cultivars, including glutinous rice and hybrids, as materials, the differences in grain filling and the formation of endosperm structures among the genotypes were investigated.
     1.不同基因型水稻籽粒灌浆特性与胚乳淀粉结构以籼稻、粳稻、糯稻和杂交稻等不同基因型水稻为材料,研究了籽粒灌浆特性、胚乳结构的形成在不同基因型间的差异与分布特点。
短句来源
     Ecotype differences in milling qualities and appearance qualities of different rice genotypes
     不同基因型水稻稻米加工品质和外观品质的生态型差异
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     Two rice genotypes differed in tolerance to iron toxicity were used to investigate the adsorption of phosphate by iron plaque on rice roots and subsequent effect on P absorption by rice.
     采用溶液培养方法 ,使铁毒耐性不同的两个基因型水稻根表分别形成有铁膜和无铁膜的根系 ,研究水稻根表铁膜对磷的富集作用及其与水稻磷吸收的关系。
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  “rice genotypes”译为未确定词的双语例句
     It is higher for Zn inefficient rice genotypes, pZn 2+ 10.3 for IR26, pZn 2+ 10.3~10.6 for Ce64 7 , and lower for Zn efficient, pZn 2+ 10.6~11.0 for IR34 and IR8192, respectively.
     敏感品种锌离子活度临界值较高 ,IR2 6为不低于 p Zn2 + 10 .3,测 64- 7为 p Zn2 + 10 .3~ 10 .6;
短句来源
     Therefore, pZn 2+ 10.6~11.0 might be an effective Zn 2+ activity to identify Zn efficient rice genotypes.
     耐性品种锌离子活度临界值较低 ,IR36和 IR8192为 p Zn2 + 11.0~ 10 .6。
短句来源
     With comparison of the primers,we found that PLD12 could be used to identify Xieyou 64,PWP13 could be used to distinguish Xieqingzao A and Xieqingzao B by combining PLD12,PLC11 and PWP13.We could the distinguish the differences between or among the rice genotypes tested.
     使用引物PLD12能够将协优64与其双亲乃至所有供试材料加以区别,使用引物PWP13,可以将协青早A与协青早B加以区别,结合使用引物PLC11、PLD12和PWP13,则可以将所有供试材料逐一加以区别。
短句来源
     Under low (1 mg L -1 ) and sufficient (10 mg L -1 ) phosphorus (P) levels, response to P stress by two rice genotypes, JX17 ( Oryza sativa ssp. japonica ) and ZYQ8 ( Oryza sativa ssp. indica ), was studied by mixed culture method.
     在低磷 (1mgL-1)和适磷水平 (10mgL-1)下 ,分别以混合培养方式研究了粳稻京系 17(Oryzasativassp.japonica) (JX17)和籼稻窄叶青 8号 (Oryzasativassp .indica) (ZYQ8)对磷营养的反应 .
短句来源
     The physiological characteristics of rice in different Zn 2+ activities(pZn 2+ >11.5, 11.3, 11.0, 10.6, 10.3, 9 7) were studied with the Zn efficient rice cultivars IR34,IR36,IR8192 and Zn inefficient rice cultivars IR26, Ce64 7, Biyuzaonuo grown in chelator buffered nutrient solution. There was significant difference in tolerance to zinc deficiency among different rice genotypes.
     采用 HEDTA螯合缓冲营养液培养法 ,研究了水稻锌营养高效基因型 IR34、IR36、IR8192和锌敏感基因型 IR2 6、测 6 4 - 7、碧玉早糯在不同锌离子活度 (p Zn2 + >11.5 ,11.3,11.0 ,10 .6 ,10 .3,9.7)下的生理特性。
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  rice genotypes
We were interested in surveying rice genotypes that are popularly used in the Indian breeding program for conferring resistance to bacterial blight, using 11 STMS and 6 STS markers.
      
An efficient Agrobacterium-mediated method for transformation of popular Bangladeshi Indica rice genotypes has been developed.
      
Agrobacterium-mediated transformation of Indica rice genotypes: an assessment of factors affecting the transformation efficiency
      
An attempt has been taken to establish an efficient plant regeneration system in vitro from 3, 5, 7 and 9-days-old root segments of four Indica (Bangladeshi) rice genotypes.
      
This study was conducted to evaluate the effects of native soil Zn status and fertilizer application on Zn concentrations in grains of five rice genotypes that had previously been identified as either high or low in grain Zn.
      
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Forty improved rice varieties developed in Jilin province were genealogized, and their inheritance were analysed in this text. The result showed that most of the improved rice varieties in Jilin province had a close blood relationship with Japanese varieties. They were divided into five derivative systems as Aikoku, Kame no o, Bozu. Hokai No. 1 and Asahi. The main sources of their cytoplasms originated from four Japanese ancestral varieties: Higashigo No. 2 Sekiyama ine, Hojo and Bozu. And the main sources of...

Forty improved rice varieties developed in Jilin province were genealogized, and their inheritance were analysed in this text. The result showed that most of the improved rice varieties in Jilin province had a close blood relationship with Japanese varieties. They were divided into five derivative systems as Aikoku, Kame no o, Bozu. Hokai No. 1 and Asahi. The main sources of their cytoplasms originated from four Japanese ancestral varieties: Higashigo No. 2 Sekiyama ine, Hojo and Bozu. And the main sources of their cellnucleuses originated from seven Japanese ancestral varieties. Kame no o, Aikoku, Higashigo No. 2, Bozu, Sekiyama ine, Asahi and Shonai wase. In order to increase yield potency of the rice variety it is necessary to collect and introduce various new rice resistant sources and new rice genotypes widely in the world.

本文对吉林省育成的40个水稻主要品种进行了系谱追溯及遗传分析。结果表明绝大多数育成品种系谱是与日本品种保持着极其密切的亲缘关系。可划分为“爱国”、“龟之尾”、“坊主”、“北海一号”、“旭”等五大衍生系统。细胞质主要来源于“东乡2号”、“关山稻”“丰稂”、“坊主”等4个日本原始亲源。细胞核主要来源于“龟之尾”、“爱国”、“东乡2号”、“坊主”、“关山稻”、“旭”、“庄内早生”等7个日本原始品种。为了提高品种增产潜力,必须从世界各地广泛搜集、引入各种新抗源和新基因类型。

Soaking seed in MET markedly control young seedling spindling of hybrid rice in second rice crop,without any negative effects on seed germinaton.In a range of MET concentration of 5-100ppm and soaking time of 6-24 h,the higher the concentration and the longer the treating time,the more ob- vious effect of control would be obtained.Such effect was increased with seedling age increasing。The dif- ferences of MET control effect between concentrations and different times were highly significant。Plant height of 15-day-old...

Soaking seed in MET markedly control young seedling spindling of hybrid rice in second rice crop,without any negative effects on seed germinaton.In a range of MET concentration of 5-100ppm and soaking time of 6-24 h,the higher the concentration and the longer the treating time,the more ob- vious effect of control would be obtained.Such effect was increased with seedling age increasing。The dif- ferences of MET control effect between concentrations and different times were highly significant。Plant height of 15-day-old seedling in all treatments was significantly or highly significantly lower than that of the control,except a few treatments treated with low concentration and in a short time。MET control effect was also affected by rice genotypes。Some selection principles about optimum combination of con- centration with time are discussed in the paper。Peroxidase activity of seedling in vivo elevated with in- creasing of the concentration and treating time of MET。The change of quality and quantity of isozymogram and its scanning profile occurred simultaneously,and some new bands in Al zone were found,indicating that the plant height is closely correlated with peroxidase。

多效唑浸种对杂交晚稻秧苗有明显的控制徒长效应。对种子发芽并无不良影响。在本试验浓度(5~100ppm)和浸种时间(6~24h)范围内,浓度越高,处理时间越长,控长效应越明显、并随着秧龄的增长而提高。方差分析表明,多效唑对秧苗的控长效应在各处理浓度和时间之间的差异均达极显著水平。经多重比较(SSR 法)结果表明,除少数低浓度短时间处理外,其他各处理组的15天幼苗均显著或极显著矮于对照。随着多效唑处理浓度的增加、苗体内过氧化物酶活性有所提高,同工酶谱及扫描图也有量和质的变化,并在 AI 区发现了新的酶带,证实了过氧化物酶与株高有密切的关系。多效唑的控长效应还表现有基因型的差异。本文对最适处理浓度和时间组合的选择进行了讨论。

Effective utilization of somaclonal variation in rice(Oriza Sativa L.) breeding requires an investigation on the variation pattern of morphological characters in population of regenarated plants.Five different explants from 8 rice genotypes were cultured in vitro to gain regenerated plants from seutellum calli.Frequncy and range of character variations in populations of regenerated plants derived from these explants in vitro were compared to measure difference among genotypes and explants. The results...

Effective utilization of somaclonal variation in rice(Oriza Sativa L.) breeding requires an investigation on the variation pattern of morphological characters in population of regenarated plants.Five different explants from 8 rice genotypes were cultured in vitro to gain regenerated plants from seutellum calli.Frequncy and range of character variations in populations of regenerated plants derived from these explants in vitro were compared to measure difference among genotypes and explants. The results of this study showed that the character variation pattern and variability of regenerated plants varied with different rice genotypes and different explants. Character variations were more frequent in the populations of regenerated plants of rural rice cultivars than in those of improved cultivars.The populations of regenerated plants derived from young panicles showed higher variability and wider range of cha- racter variation than the populations of regenerated plants derived from other exp- lants such as internodes,sheaths,anthers and immature embryos.There were also differences among the variabilities of various morphological characters.Characters such as plant height,heading stage,fertility,single panicle weight,number of grains/ panicle and number of grains/cm were more variable and possessed higher frequency of beneficial variation.

本文以水稻八种基因型的五种外植体为材料,经离体培养获得再生植株。就各群体后代性状变异的发生和范围作了比较。结果表明,基因型不同,外植体不同,其再生植株性状变异的类型和程度也不同。古老的地方品种比改良品种容易得到性状变异。再生植株所表现的性状变异以幼穗为外植体比以茎间、叶鞘、花药和幼胚作外植体的发生得多。各种农艺性状本身的变异程度也各不相同。株高、抽穗期、育性、单穗重、每穗实粒数和着粒密度等性状易于变异,且有益变异频率较高。

 
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