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maize
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  玉米
    STUDY ON INDEX SYSTEM AND GENETIC CHARACTERISTICS OF DROUGHT RESISTANCE IDENTIFICATION IN MAIZE
    玉米抗旱性鉴定指标体系及抗旱鉴定指标遗传特性的研究
短句来源
    Study on the Mechanism of Hydraulic Lift of the Alfalfa and Maize
    苜蓿、玉米根系提水作用机制研究
短句来源
    Studies on Effects of Ecological Factors on Growth of Maize and Establishment of Climate Ecology Model and Appraisement System
    生态因素对玉米生长发育影响及气候生态模型与评价系统建立的研究
短句来源
    Study on Biology of Cytoplasmic Male Sterile Line GDS in Maize(Zea Mays L.)
    玉米(Zea mays L.)GDS细胞质雄性不育系生物学研究
短句来源
    Cloning and Functional Analysis of Trans-acting Factors Binding to Cis-acting Element ABRE of Maize Cal 1 Gene
    玉米Cat1基因顺式作用元件ABRE的反式作用因子的克隆和功能分析
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  “maize”译为未确定词的双语例句
    Research on Expression Regulation and Management of Maize Starch Branch Enzyme Genes
    玉米淀粉分支酶基因表达调控的研究
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    POPULATION STRUCTURE AND LIGHT DISTRIBUTION IN MAIZE FIELDS
    玉米田的群体结构与光能分布
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    Estimates of Genetic Parameters for 13 Quantitative Traits in a Recombined High Oil Maize (F_2) Population of IHO (C80)×Alexho (C23)
    对伊利诺高油(IHO C80)和亚里山索高油(Alexho C23)重组群体的遗传研究
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    Genetics and Breeding of Maize Starch Content
    玉米淀粉含量的遗传与育种
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    The Effect of Phytohormones on the Activities of Protective Enzymes in Wheat and Maize Seedling Leaves under Water Stress
    激素对水分胁迫条件下小麦等作物细胞保护酶活性的影响
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  maize
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.
      
Differences on Pb accumulation among plant tissues of 25 varieties of maize (Zea mays)
      
In this study, the feasibility of the method is assessed by analyzing Pb concentrations in edible and inedible parts of 25 varieties of maize (Zea mays) grown in Pb-contaminated soils.
      
The resulting mixed cultures utilized cellulose, cellobiose, glucose, maize residue, cotton, and flax boon producing ethanol (up to 0.9 g/l) and acetic acid (up to 0.8 g/l).
      
Ethylene-Induced Activation of Xylanase in Adventitious Roots of Maize as a Response to the Stress Effect of Root Submersion
      
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(1)The population structure varies with the age and growth of the plant.The leafarea and dry matter increase greatly from the stage of node elongation to that of pollina-tion.During this period,the ears begin to grow fast.Organic matters are translocated tothe ears from other organs of the plant during time of pollination to maturity stage.Hence,the center of gravity of the population structure moves down to the middle part of the maizefields.In analyzing the results of the population structure,the vertical...

(1)The population structure varies with the age and growth of the plant.The leafarea and dry matter increase greatly from the stage of node elongation to that of pollina-tion.During this period,the ears begin to grow fast.Organic matters are translocated tothe ears from other organs of the plant during time of pollination to maturity stage.Hence,the center of gravity of the population structure moves down to the middle part of the maizefields.In analyzing the results of the population structure,the vertical distribution of light,and the grain yields of the maize fields,it is found that a population of 3000 plants per mowis more reasonable than that of 2000 or 4000 plants per mow.(2)In the maize fields,the vertical distribution of light varies with the density of thepopulation structure.The transmission of light to the field decreases as the density of themaize increases.In case there is a population of 3000 or 4000 plants per mow,the leaf dis-tribution in the middle part of the maize fields is comparatively uniform,and so the verticaldistribution of light may well be represented by the Beer-Lambert equation.However,thesituation is different in the upper and the lower parts of the maize fields in that its leaf dis-tribution is not very uniform.In the fields of a population of 2000 plants per mow,the leafdistribution is far from being uniform even in the middle part,and so the Beer-Lambertequation is not applicable in this case.(3)The maize fields as well as other kinds of fields show a system of autoregulation.Both the area and the extending direction of the leaves vary with the planting density andthe irradiation of the population structure.This autoregulation is carried out through re-generation.

玉米田的群体结构和光能分布随密度而异,与播方式的关系不大。就结构与光分布而论,以每亩3,000株的最为理想亦最有利于高产。玉米叶片的伸展方向,可以通过叶片的向光性来自动调节。

Four different types of cytoplasmic male sterility in maize were tested for their identityby use of the restoration technique.Male-sterile lines incorporated with cytoplasm of theTexas source were found to be completely affected in crosses by a group of restorers includ-ing W153,W28 and G32,and partially restored by W24,M14 and A34.This made a figure of6 restorers out of about 60 inbreds thus tested in the Texas cytoplasm.Inbreds W153 wasselected as a differential restorer for T-type steriles since it...

Four different types of cytoplasmic male sterility in maize were tested for their identityby use of the restoration technique.Male-sterile lines incorporated with cytoplasm of theTexas source were found to be completely affected in crosses by a group of restorers includ-ing W153,W28 and G32,and partially restored by W24,M14 and A34.This made a figure of6 restorers out of about 60 inbreds thus tested in the Texas cytoplasm.Inbreds W153 wasselected as a differential restorer for T-type steriles since it gave no reactions to the othertypes.For the Moldavia type of male sterility,formerly offered by Prof.Hadjinov,we founda partially restoring inbred W9 to be better suited for the similar purpose.The third andfourth type of male sterility,designated as B- and G-type,came through our own selectionsfrom two Bulgarian varieties.Separation between them seemed difficult.Since A374 gavepartial pollen fertility to the B-type steriles exclusively,it could be used as a differentiat orfor this type of cytoplasm.Pollen restoration in crosses involving W153 and W28 followed the expectation based ona dominant Mendelian gene.However,data obtained from segregating progenies of doublecrosses in which G32 was the restorer suggested strongly that two dominant complementarygenes were more workable.The difference in genotype of inbreds concerned in variousinvestigations seemed to be responsible for such inconsistent results.Segregating patterns in the Texas sterile crosses of the partial restorer,W24 or M14,varied with plants used as the pollen parent and with the date of planting.It appeared verylikely that W24 and M14 were heterozygous for major restorer genes since one sterile versionof W24 and four fully restoring lines of M14 had been established by conversion and test-cross-ing respectively.Dominant modifiers might also be present in either of the inbred popula-tions.In the presence of Moldavian cytoplasm the recessive allele of the restorer gene seemedto exert an abortive action to its pollen carriers produced by the heterozygote.When plantsheterozygous for the restorer gone were outcrossed to male steriles carrying the right cyto-plasm,all plants from the progenies proved to be pollen shedders.It was suggested that theM-type cytoplasm might be similar to that of S-type.Tentative genotypes related to pollen restoration of Texas male sterility had been workedout for a number of inbreds on the basis of two dominant complementary genes.Workingschemes for the production of double-cross seeds of maize without detasseling had been sum-marized and discussed by the authers.

三种细胞质遗传的玉米雄花不孕类型各有其专效的恢复系和部分恢复系。在 T 型细胞质基础上,测定出两对显性互补基因决定着花粉孕育性的恢复,同时还有显性修饰基因存在,影响其表现的程度。春播和夏播的不同环境条件只对部分恢复性的表现发生明显影响,对全恢复性和不孕性则很少能够改变。M 型恢复性的等位隐性基因在杂合株内对花粉粒具有某种致死或败育作用,故测交后代表现不分离现象。本文初步鉴定了若干常用自交系的 T 型恢复基因型,并以此作为根据,提出了配制全不去雄的玉米双交种的各种可能方案。

According to investigations, some characteristics of male-sterile type in maize have been described and discussed in the present paper. The main results obtained are summarized as follows:In the backcross method for maize, the original male-sterile type may be transformed into a new male-sterile line. As the number of backcross generation increased, the green leaf area of the strain gradually decreased. Although the male-sterile line had been crossed through 4-5 generations, its green leaf area and...

According to investigations, some characteristics of male-sterile type in maize have been described and discussed in the present paper. The main results obtained are summarized as follows:In the backcross method for maize, the original male-sterile type may be transformed into a new male-sterile line. As the number of backcross generation increased, the green leaf area of the strain gradually decreased. Although the male-sterile line had been crossed through 4-5 generations, its green leaf area and the power of photosynthesis were still higher than in the case with the fertile line. Consequently, the productivity of the single male-sterile line through 3-4 generations was greater than that of the corresponding combinations of single fertile hybrids both in the green leaf area and the power of photosynthesis. The net rate of assimilation and the yields of sterile line were also higher. It has been found that single hybrids from early male-sterile line had a greater heterosis than the corresponding combinations of single hybrids.After testing the inbreds crossed with a male-sterile line, a few stronger restorers were be found. It was suggested that the inbreds Wei-shi 137, Wei-er44, W153 and Wa8 would highly restoring ability for T-type male-sterile line.

研究结果表明,将原有的玉米雄性不育系转化为新的不育系,回交4—5代,新不育系绿叶面积、光合势略高于保持系,植株外貌极为相似,可供育种工作利用。在净同化率和产量方面,同组合的不育单交种较可育单交种为高。同时,通过对不育系育性的鉴定,初步认为威西137、维尔44、威153和瓦8等4个自交系具有较高的恢复能力。

 
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