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   玉米杂交种的 的翻译结果: 查询用时:0.493秒
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玉米杂交种的
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  maize hybrids
     The soluble sugar content of sweet-waxy maize hybrids w as higher than that of the recessive homozygotes wx and su1wx;
     甜糯玉米杂交种的可溶性总糖含量高于隐性纯合体wx、su1wx;
短句来源
     The polymorphisms of 72 parental inbred lines from 86 maize hybrids were investigated by 79 pairs of SSR primers, and 50 primers with stable amplification profiles were selected to construct DNA fingerprinting database of 86 hybrids.
     采用79对SSR引物分析了86个玉米杂交种的72份亲本自交系的遗传多态性,从中筛选出扩增带型清晰、稳定的50对引物用于构建86个杂交种的DNA指纹图谱数据库;
     Chlorophyll content was measured in this study,according to different generations of different maize hybrids.
     叶绿素合量是一项重要的生化指标。 本试验以不同玉米杂交种的不同世代研究了玉米叶片叶绿素含量变化。
短句来源
     From 1997 to 1998, 16 maize hybrids widely planted in Huang-Huai-Hai Plain were selected to investigate both morphological and physiological characters of superhigh yield maize hybrids, the results are as follows:
     1997、1998连续两年选用黄淮海平原广泛种植的16个玉米杂交种,研究了高产玉米杂交种的形态和生理特性,结果为:
短句来源
     Germplasm Base of Maize Hybrids Used At Southwest Mountainous District in China
     中国西南山区玉米杂交种的种质基础
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  “玉米杂交种的”译为未确定词的双语例句
     They were Huang 4052 Ji 35 Shuang105 and Nongda 256 The specific crossability of 718×M107 and H21× Ye107 were much higher than 718 and H21 and could be used for taking the place of Huangzao 4 in seed production of Yandan 14 and Yedan 2.
     在抗病性、配合力、自身产量3个主要性状上均优于黄早4的有黄4052,冀35,双105,农大256等4个,718与M017,H21与掖107特殊配合力较高,因此可用718与H21代替黄早4进行烟单14和掖单2号玉米杂交种的大田制种。
短句来源
     Corn hybrids resistant to stalk rot had higher sucrose contents in the pith tissues of the second internode above the ground than hybrids susceptible to the disease.
     结果表明 ,在玉米生理成熟期地上第二茎间髓部组织内蔗糖的含量与玉米对茎腐病的抗性密切相关 ,抗病的玉米杂交种的蔗糖含量明显高于感病的玉米杂交种。
短句来源
     This paper analysed primary of germ on Hybird corn based on hybird corn grown in large scale in Shanxi province from 1995 to 1999,corn variety approved from 1994 to 1996,and corn new combination of regional test attended from 1994 to 1997.The result showed that corn breeding has a great development,but blastogenses base of corn was very narrow,so further effort is needed.
     从 1995~ 1999年山西省大面积生产所用的杂交种、1994~ 1996年审 (认 )定的玉米品种和1994~ 1997年参加区域试验的玉米新组合的资料 ,着手分析山西省玉米杂交种的种质基础 ,表明山西省玉米育种有了很大的发展 ,但仍需继续努力
短句来源
     Studies on maize heterotic groups and patterns are very helpful to select elite inbreds and to raise the breeding efficiency.
     玉米杂种优势群及其模式的研究对于指导玉米自交系的选育和提高组配玉米杂交种的效率具有重要意义,是玉米育种的重要基础性工作;
短句来源
     Root growth, nitrogen uptake and yield formation of hybrid maize with different N efficiency
     不同氮效率玉米杂交种的根系生长、氮素吸收与产量形成
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  相似匹配句对
     BREEDING MAIZE HYBRIDS FOR HIGH LYSINE CONTENT
     高赖氨酸玉米杂交种的选育
短句来源
     THE MAIZE GERMPLASM BASE OF HYBRIDS IN CHINA
     中国玉米杂交种的种质基础
短句来源
     A PRELIMINARY ANALYSIS ON THE STABILITY OF MAIZE HYBRIDS
     试分析玉米杂交种的稳定性
短句来源
     THE GERMPLASM BASE OF HYBRID MAIZE IN SICHUAN
     四川玉米杂交种的种质基础
短句来源
     The Yield and Main Agronomic Traits of Introduced Maize Hybrid
     外引玉米杂交种的产量和农艺性状
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  maize hybrids
Phytohormones in Seedlings of Maize Hybrids Differing in Their Tolerance to High Temperatures
      
Protein quality traits and their relationships with yield and yield components of opaque-2 and analogous normal maize hybrids an
      
Therefore, the purpose of this research was to determine combining ability for sulfate uptake, in a diallel series of maize hybrids among five inbreds.
      
Parentage determination in maize hybrids using the arbitrarily primed polymerase chain reaction (AP-PCR)
      
Furthermore, partial self-fertility, which is common in oat haploids, was also observed in some oat-maize hybrids.
      
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By studying ample results on corn breeding, the author put forth the following summary on the relation between the phenotypic expressions of the inbred lines and the heterosis of their F1 hybrids. To meet the need for analytical purpose, the inbred lines studied were classified as 5 plant-types, 3 ear-types and 5 tassel-types.1. There is greater possibility to obtain strong heterosis by using the inbred lines of different plant-types in the cross. This is especially true when the parental com-tinations are normal...

By studying ample results on corn breeding, the author put forth the following summary on the relation between the phenotypic expressions of the inbred lines and the heterosis of their F1 hybrids. To meet the need for analytical purpose, the inbred lines studied were classified as 5 plant-types, 3 ear-types and 5 tassel-types.1. There is greater possibility to obtain strong heterosis by using the inbred lines of different plant-types in the cross. This is especially true when the parental com-tinations are normal × cylindrical, normal × long-cylindrical, normal × pyramidal, normal × fan-shaped, cylindrical × fan-shaped and pyramidal × fan-shaped.2. There is greater possibility to obtain strong heterosis when the ear of both parents or one of them belongs to the I-types (husks much longer than the core).3. The possibility of obtaining strong heterosis is also greater by pairing the parents with tassels of medium development. This possibility is not found in crossing the parents with well developed tassels.4. It is rather earier to obtain strongly vigorous hybrid with increased number, weight and quality of kernels by crossing a parent of large or medium dent type with more rows per ear (16 or more) and more kernels per row with the other parent of half-dent or flint type with more rows per ear or more kernels per row.5. A strongly vigorous hybrid resistant to Helminthosporium leaf spots is only expedient when both parents are resistant, or by crossing a resistant parent with a less susceptable or little resistant parent.

本文依据玉米育种实践和亲本性状遗传规律的资料,从亲本自交系外部性状与杂种优势的关系上,进一步探讨如何有预见地组配强优势玉米杂交种的问题。研究结果表明,亲本的“株型”、“果穗类型”、“雄穗类型”、“果穗性状”和“抗大、小叶斑病性能”等主要性状,与杂种优势的大小有着一定的联系。根据亲本自交系的上述性状的差异,选择并合理搭配杂交组合,可以大大提高强优势杂交种出现的机率,从而提高了搭配杂交组合的预见性,减少了杂交育种工作中的盲目性。

A few male sterile plants were found in a maize hybrids intro-duced from Italy in the summer of 1973.They were pollinated bythe sister plants.All plants obtained in the next generation and aftersuccessive back—crosses were proved to be male sterile,while the selfedprog(?)nies of the paternal parent remained fertile.This indicated thecytoplasmic nature of the male—sterility.Some stable male sterile lineswith desirable agronomic characters were selected through selection andbackcrossing.Among inbred lines or other...

A few male sterile plants were found in a maize hybrids intro-duced from Italy in the summer of 1973.They were pollinated bythe sister plants.All plants obtained in the next generation and aftersuccessive back—crosses were proved to be male sterile,while the selfedprog(?)nies of the paternal parent remained fertile.This indicated thecytoplasmic nature of the male—sterility.Some stable male sterile lineswith desirable agronomic characters were selected through selection andbackcrossing.Among inbred lines or other breeding materials so fartested,60% of them were found to be homozygous or heterozygous forfertility restoring genes and about 40% of them being homozygous forthe male sterile genes.Using these new male sterile lines and theirrestorers,we have made and found some good hybrid combinations withhigh combining ability,the best of them giving a 30% higher yieldthan the popular open—pollinated variety.The fertility restoration was foundto be controlled dy a dominant gene.No effort has been made toidentify the type of male sterile cytoplasm in this paper.

作者从国外引进的玉米杂交种中获得雄性不育株,育成了不育性稳定的优良雄性不育系及其保持系和恢复系,并利用它们配制成强优势杂交组合,比现有推广种增产显著。在本试验的玉米测交材料中约有60%具有纯合或杂合恢复基因,约40%具有纯合不育基因,因此利用这些材料很容易培育成优良雄性不育系和恢复系。这些不育系育性的表现受胞质与一对育性核基因互作的控制。

The photosynthetic rate,leaf area,dry matter productions,leaf orientation value(LOV)andgrain yield were measured and investigated in a diallel cross of six inbred lines of corn.The resultsindicated that the leaf area was significantly and positively correlated with the dry matter produc-tions and grain yield;photosynthetic rate was significantly correlated with biological products and grainweight.The significantly positive relation of relative growth rate of leaf with relative growth rate ofdry matter products,biological...

The photosynthetic rate,leaf area,dry matter productions,leaf orientation value(LOV)andgrain yield were measured and investigated in a diallel cross of six inbred lines of corn.The resultsindicated that the leaf area was significantly and positively correlated with the dry matter produc-tions and grain yield;photosynthetic rate was significantly correlated with biological products and grainweight.The significantly positive relation of relative growth rate of leaf with relative growth rate ofdry matter products,biological products and 1000-grain yield were also observed.LOV showed nosignificant correlation with dry matter productions or grain yield in this experiment.The multipleregression analysis showed that both photo synthetic rate and leaf areas affected the dry matter pro-duction and grain yield significantly.But the effects of leaf areas were greater than photosyntheticrate.Analysis of the combining ability of photosynthetic traits showed that the general combining abilityand specific combining ability of photosynthetic rate were of highly significance.The general combi-ning ability and specific combining ability of leaf area and LOV were also of highly significance,andthe former were much greater than the latter.The general combining ability and specific combining ability of photosynthetic traits and yieldtraits of six inbred lines and their crosses were estimated and analysed in this paper.

本试验在不同时期测定和调查了由6个自交系组配的一玉米双列杂交中各组合的光合速率、叶面积、叶向值、干物质生产和籽粒产量等性状。试验结果表明:玉米杂交种的叶面积与干物质生产、籽粒产量均有显著正相关;叶面积相对增长率与干物质相对增长率、生物学产量及籽粒产量间都具有显著正相关;光合速率与生物学产量、千粒重间具有显著正相关。多元回归分析表明:光合速率和叶面积对玉米杂交种的干物质生产和籽粒产量均有一定作用,而叶面积的作用更大一些。对光合性状的配合力分析表明:光合速率以及叶面积的一般配合力和特殊配合力均非常显著,但一般配合力效应大于特殊配合力;在叶向值中,一般配合力效应远远大于特殊配合力。此外,还估计了6个自交系各性状的一般配合力和其杂交组合的特殊配合力效应,并对结果进行了分析和讨论。

 
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