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empty grain     
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  空粒
     As light densityreduced and the time of low-light stress lengthened, the empty grain rate increasedcontinuously.
     随光强降低及遮光时间延长,籽粒的空粒率大幅度上升。
短句来源
     In heading stage the ratio of the dry weight of the stem and leaf sheath to the number of flowers was significantly inversely related to the percentage of empty grain.
     随着插植苗数增加,杂交稻的空秕粒率上升,而常规品种则下降。 抽穗时茎鞘干重和颖花数的比值与空粒率成显著的负相关。
短句来源
     Empty grain pollen, empty sac anther syst and pollen seeming normal in appearance with low viability are chief phenotypes of male sterility in peach.
     桃雄性不育的主要表现形式为空粒花粉和花药空囊,及花粉形似发育正常,但生活力极低。
短句来源
     Generating ways of empty grain pollen are: ① abnormal meiosis of pollen mother cell.
     导致空粒花粉产生的主要途径:①花粉母细胞减数分裂不正常;
短句来源
  空壳粒
     Phytohormone Regulation on Number of Empty Grain in Hybrid Rice
     杂交稻空壳粒的植物激素调控
短句来源
     The treatment of spray of BA on the decrease in number of empty grain in hybrid rice was clearly affected, the weights of grain can be more increased also by BA.
     喷施BA显著地降低杂交稻空壳粒和增加谷粒重量。
短句来源
  “empty grain”译为未确定词的双语例句
     GAs helps to increase the total nitrogen and soluble protein contents and reduce the starch and soluble sugar contents in flag leaves of hybrid rice during its later growth stages. thus resulting in reduction of empty grain percentage and increase of grain yields.
     赤霉素(GAS)能显著提高杂交稻生育后期剑叶中总氮含量和可溶性蛋白质含量,降低淀粉及可溶性糖含量,因而能降低空秕率和提高产量。
短句来源
     The relationship between different damage levels by larvae and yield losses is also analyzed. The results indicate that the 2nd generation of larvae mainly led to the decrease of 1000-grain-weight of rice and grain numbers per ear,and empty grain ratio is also affected.
     对不同为害程度与水稻产量损失量关系进行了测定和分析,结果表明,第2代为害主要可使千粒重降低,同时对每穗粒数和空壳率也有较大影响。
短句来源
     The empty grain percentage of the two combinations decreased singinificatly after GA3 treatment. The effect in V49 was also more obvious than that in V35,and being significant at 0. 05 level.
     GA_3使两杂交组合的空秕率明显降低,其中早衰组合降低的幅度更大,统计学上达到0.05的显著水平.
短句来源
     The results showed that breeding should focus on the improvement of variety characters,such as head milled rice rate,milled rice rate,seed weight per panicle and empty grain rate firstly,then seeds per panicle.
     结果表明,水稻育种首先应注意整精米率、精米率、单株粒重和空秕率的改良,进而提高穗粒数。
短句来源
     In the experiment, the fertilizer mixed with inorganic minerals was applied and the yield and quality of rice were analysed. The result showed that the mixed fertilizer could improve tillering and prevent plant lodging of rice. Compared with common fertilizers yield increased 11.9% when 25kg mixed fertilizer was applied on 667m 2, 100 kernel weight increased 2.0g and the rate of empty grain decreaded 11.1%.
     应用无机-矿质复混肥料,对水稻产量和品质进行了分析,试验证明,无机-矿质复混肥料可以促进水稻分蘖、防止植株倒伏,667m2施无机-矿质肥料25kg,比常规施肥处理增产12.1%,千粒重增加2.0g、空秕率降低11.1%。
短句来源
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  empty grain
Poor harvest conditions in many part of province, malathion should not be used in empty grain bins if canola is to be stored.
      
Because insects die by coming into contact with it, Spinosad also can be used on such surfaces as empty grain bins and retail store buildings.
      


The "two lines" hybrid rice shows heterosis in development of root system,tillers and spikes, it has more than 160-grains per spike, but the percentage of abor-ted grains (including both empty and unfilled grains) lies in the range of 30-40%.The purpose of this work is to study the position of empty grains on a spike, andto find possible ways of controlling it. The percentage of empty grains on the middle or lower rachis branches arehigher than on the upper rachis branches;...

The "two lines" hybrid rice shows heterosis in development of root system,tillers and spikes, it has more than 160-grains per spike, but the percentage of abor-ted grains (including both empty and unfilled grains) lies in the range of 30-40%.The purpose of this work is to study the position of empty grains on a spike, andto find possible ways of controlling it. The percentage of empty grains on the middle or lower rachis branches arehigher than on the upper rachis branches; the empty grains are distributed on thesecond (Ⅱ) branch especially. The percentage of empty grains depends upon theirposition on a rachis branch. It appears to be increasing with the number of culms(main stem or other tillers) per plant. The number of empty and unfilled grains could be regulated over a wide rangeby the nutritional status of the hybrid rice. The number of empty grains can bedecreased by enrichment in the supply of mineral nutrients or organic foods; theweights of grain can be increased also by enrichment mineral nutrients or organicfoods. It is important in both theory and practice to discover more physiologicalcauses of the formation of aborted grains of the hybrid rice.

“两系”杂交稻具有根系、分蘖和穗粒的优势,主茎穗平均160粒以上,但空秕率高达30—40%。本研究探讨了空壳粒的形成部位及可能的防止途径。空壳率以中部、下部枝梗上较高,尤其是中部、下部的第Ⅱ次枝梗上空壳率高;空壳率的高低因粒序而异,空壳率随分蘖次序的先后有增加的趋势。 杂交稻的空粒、秕粒在很大程度上受营养状况所制约,改善水稻植株的有机、无机营养状况,可以降低空粒数,增加粒重。进一步揭露杂交稻的空粒、秕粒的生理原因,在理论和实践上均有重要意义。

Observations were made under the electron microscope on the cytostructural conditions of the microspores that had been subjected to an injurious cold temperature dnring the boot stage in indica rice.The facts revaled from the observations were as follows.When the daily mean temperature in two days was 20℃(max.24℃.min.14℃)the injui-rous effect on the developing microspores was obvious.In the same pollen sac the difference in cyto-structural coditions among the individual developing microspores injured by cold...

Observations were made under the electron microscope on the cytostructural conditions of the microspores that had been subjected to an injurious cold temperature dnring the boot stage in indica rice.The facts revaled from the observations were as follows.When the daily mean temperature in two days was 20℃(max.24℃.min.14℃)the injui-rous effect on the developing microspores was obvious.In the same pollen sac the difference in cyto-structural coditions among the individual developing microspores injured by cold was very great, quite a portion of the microspore cells was distorted or even disintegrated in various degrees , and the vacuoles were especially seriously deformed (destroyed) . In the tapetum the cytoplasm of the cells was also disorganised in various degrees. Finally the outcome of cold injury was an increace in the rate of blighted(empty) grains,i.e.,an increace of 35.1% as against the control.

应用电子显微镜对水稻孕穗期冷害的小孢子和绒毡层进行观察,得到如下结果:日平均温度20℃(最高24℃,最低14℃,持续时间2天),对籼稻品种(晚籼)的小孢子发育已有明显的影响。受低温影响的小孢子个体之间(在同一花粉囊中)的发育形态有很大差异。一部分小孢子的细胞器不同程度被破坏或解体,尤其各种形态的液泡系被破坏,液泡膜收缩,出现龟裂现象。受低温影响在绒毡层细胞的细胞质中,各种细胞器也不同程度被破坏或解体。最后导致空秕率增加,其空秕率比对照增加35.1%.

The male-sterile lines used in this study were(Gam)Min-Zao 1A,(Gam)Chao-Yang 1 A,(WA)Chao-Yang 1 A,(WA)Zhen-Shan97 A,(Gam)V 20A,(Gam)Fr-Jiu-Ai 7 A,and restoring lines wereTai-Yin 1,Tai-Guo-Dao,IR 24,Gu 223,IR 110-20.These materialsconstituted an incomplete diallel cross of 6×5.We estimated the heri-tability and combining ability of 16 characteristics:plant height,ratesof tillering,panicle per plant,number of grains per panicle,full grainsper panicle,percentage of empty grains,percentage of half empty...

The male-sterile lines used in this study were(Gam)Min-Zao 1A,(Gam)Chao-Yang 1 A,(WA)Chao-Yang 1 A,(WA)Zhen-Shan97 A,(Gam)V 20A,(Gam)Fr-Jiu-Ai 7 A,and restoring lines wereTai-Yin 1,Tai-Guo-Dao,IR 24,Gu 223,IR 110-20.These materialsconstituted an incomplete diallel cross of 6×5.We estimated the heri-tability and combining ability of 16 characteristics:plant height,ratesof tillering,panicle per plant,number of grains per panicle,full grainsper panicle,percentage of empty grains,percentage of half empty grai-ns,grain weight per plant,weight of 1000 grains,date of heading,length of grains,width of grains,length/width of grains,transparenceof grain endosperm,protein content and percentage of brown rice.Themain results are as follows:1.Concerning the most characteristics of hybrid rice F_1,it isfound that the general combining abilities of sterile lines and restoringlines play a more important role as compared with their specific com-bining abilities.2.There is a great difference between the influence of the sterilelines and that of the restoring lines on the hybrid rice.As to the es-timation of general combining abilities of 16 characteristics of hybrids,we have primarily found out the effect of the sterile lines and resto-ring lines on the formation of characteristics.3.In the hybrid rice,however,each characteristic is influencedby three combining abilities:the general combining abilities of sterilelines and restoring lines,and specific combining abilities of combina-tions.We call these three abilities as“total combining ability(t.c.a.)”,and on its basis we can calculate heterosis.4.The heritability of each characteristic of hybrid rice is just likethat of the common rice.In this experiment,the heritabilities of pani-cles per plant,grain weight per plant,rate of tillering and proteincontent are lower,and the heritabilities of weight of 1000 grains,dateof heading,length of grains,length/width of grains,transparence ofgrain endosperm and percentage of brown rice are higher.The heritabi-lities of such characteristics as plant height,number of grains per pa-nicle,full grains per panicle,percentage of empty grains,percentageof half empty grains,and grain width etc.are moderate.

用(冈)朝阳一号A等6个不育系与泰引1号等5个恢复系组成6×5不完全双列杂交。估算了株高、生育期等16个性状的配合力与遗传力。结果表明:杂交水稻杂种 F_1的产量和其他性状,同时受恢复系、不育系一般配合力效应和组合特殊配合力效应的作用。这三种配合力,总称为配合力总效应(用 t.c.a表示)。不育系和恢复系的一般配合力效应比组合特殊配合力效应起着更为重要的作用。根据配合力总效应,可以粗略地预测杂种优势。杂交水稻各性状的遗传力和常规稻相似。在本试验中,单株粒重、分蘖势、每株穗数、蛋白质含量等的遗传力较低。千粒重、生育期、粒长、籽粒长宽比、籽粒透明度、出糙率等的遗传力较高。株高、穗平均着粒数、穗平均实粒数、空壳率、秕谷率、粒宽等表现中等或中等偏高的遗传力。

 
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