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sterile type
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  不育类型
     (7) wheat male sterile types with CMS K,L or Sh are more potential in hybrid wheat utilization than male sterile type with CMS T.
     7K、L、Sh比 T型细胞质不育类型具有更大利用潜力。
短句来源
     A isolated from the hybrid offsprings among common Wheat culti-vars belongs to nuclear sterile type mainly controlled by two pairs of dominant non-allelegenes of the independent inheritance.
     由普通小麦品种间杂交后代分离出的7603A核不育类型,主要由两对独立遗传的显性非等位基因控制。
短句来源
     Bicornis were systematically investigated in this paper. The 4 male sterile lines of alloplasmic non-1BL/1RS wheat tested are all belonged to the sterile type of both good restoration and fine maintenance performance,especially Aegilops Kotschyi male line is the best one among them;
     1.系统考察了粘、易、偏和二角型4 种非1BL/1RS 小麦雄性不育系的育性恢复性,结果表明供试的4 种非1BL/1RS 小麦雄性不育系均属易恢复、易保持不育类型;
短句来源
     ventricosa and Ae. bicornis cytoplasms were systematically investigated in this paper. The results are as follows:(1) The 4 male sterile lines of alloplasmic non1BL/1RS wheat tested are all belonged to the sterile type of both good restoration and fine maintenance performance.
     系统考察了粘、易、偏和二角型4种异质非1BL/1RS小麦雄性不育系的育性恢复性,结果表明: 1 供试4种异质非1BL/1RS小麦雄性不育系均属易恢复、易保持不育类型;
短句来源
     1.1 There are some special characters according with the aim of rapeseed breeding in vegetable germplasm resource of Brassica campestris, such as very earliness , cold resistance, white flower, yellow-coat seeds, dwarf stem, more branches, more pods, big grain and special sterile type, etc. .
     1.1 白菜类蔬菜种质资源中存在有符合油菜育种目标的特异性状,如特早熟、抗寒、白花、黄籽、矮杆、多分枝、多角果、大粒以及特殊不育类型等。
短句来源
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  “sterile type”译为未确定词的双语例句
     Analysis of fertility segregation pattern from F1, F2 and BC1 indicated that the sterility trait of 0A15-1 was controlled by a single recessive gene and belonged to sporophytic male sterile type.
     通过与明恢63、优B和广陆矮等多个父本的杂交,其F2和BC1群体的育性分离比都揭示0A15-1的不育性状受一对隐性核基因控制,并且为孢子体型雄性不育。
短句来源
     The CNMS of wild abortive cytoplasm(WA), which is controlled by the cytoplasm male sterile gene(S) and two pairs of recessive nuclear genes(r 1r 1r 2r 2),is the sporophyte male sterile and typic power sterile type.
     质核互作雄性不育性由细胞质不育基因(S)和两对隐性细胞核基因(r1r1r2r2)控制,为孢子体不育的典败类型。
短句来源
     One of the two male sterile line ( 9334A ) is a petaloid one, the anthers of which have transformed to narrow incurved petals, and the another one ( 2518 A)is a vestigial anther sterile type, the anthers of which do not produ-ce any pollen.
     其中9334A为花药瓣化型雄性不育,2518A为花药退化型雄性不育。
短句来源
     Using WA types (wild-abortion type) Zhen-Shan 97A, Wei20A, DA types Xieqingcao A, YinNinShuiTianGuoXing II -32A, Thermo-sensitivity sterile type PeiAi 64S and their corresponding maintainer lines as CMS line breeding materials, MingHui63 type as restorer line, the application of four plant growth regulators on seed multiplication of sterile lines and seed production in hybrid rice were studied in this paper. The results were as follows:
     本研究以水稻不育系野败型珍汕97A、威20A、矮败型协青早A,印尼水田谷型Ⅱ-32A,温光敏型不育系培矮64S以及相应的保持系为不育系的繁殖材料,以明恢63等为恢复系,研究的四种植物生长调节剂对杂交水稻不育系的繁种和杂交水稻制种上的应用,主要结果如下:
短句来源
     When T. sphaerococc- urn used as mate plant was backcrossed with F_1 plant,all the progen- ies of BC_1,BC_2 and BC_3 were completely male sterile. Thus,a new male sterile type with stable sterility,named “AS-type” male sterile was obtained.
     用印度矮生做父本与其 F_1代连续回交,则 BC_1、BC_2和 BC_3的后代全为不育株,从此便成为新的稳定的 AS 型小麦雄性不育系。
短句来源
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  相似匹配句对
     Type of Y.
     针对 Y.
短句来源
     STUDY OF Y TYPE MALE STERILE CYTOPLASM IN MAIZE
     玉米 Y 型雄性不育系的分组问题研究初报
短句来源
     The Identification of Breeding of 3 New-type Sterile Rice
     几个新型水稻不育系的育性鉴定
短句来源
     illiensis type and T.
     iliensis type、T.
短句来源
     Sterile packaging
     塑料瓶无菌灌装包装
短句来源
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  sterile type
Phylogenetic analysis from sequence data of the region suggested that the four RFLP types belonging to distinct taxa and one sterile type are considered to be Hymenoscyphus ericae.
      
Among the parameters, sterile type effect (Ws), female choice (fs) and mating competitiveness (Cm) are the most important.
      
First deviation in sporogenesis of the sterile type, is observed during leptotene stage of the meiocytes.
      
The cytoplasmic male-sterile type and normal type mitochondrial genomes of sugar beet share the same complement of genes of know
      
Mitochondrial genome organization of the maize cytoplasmic male sterile type T
      
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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...

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。

Observations were made on the morphology of floral organs inmale sterile rapes,B.chinensis L.and B.napus L..It was foundthat their floral organs were different in morphology and fertility.On the basis of morphological features,the male sterile plants couldbe classified into six types.The completely male sterile type withabortive anthers was considered of practical value and described indetail.The relation between the morphological variation of floralorgans and the degree of fertility was analysed and a...

Observations were made on the morphology of floral organs inmale sterile rapes,B.chinensis L.and B.napus L..It was foundthat their floral organs were different in morphology and fertility.On the basis of morphological features,the male sterile plants couldbe classified into six types.The completely male sterile type withabortive anthers was considered of practical value and described indetail.The relation between the morphological variation of floralorgans and the degree of fertility was analysed and a few criteriafor selecting effective male steriles were suggested.These include(1)stable male sterile flowers mainly with anthers light in color ornearly necrotic and flat in shape,(2)good fertile pistils with abun-dant pod—bearing and seed—setting ability,and(3)apparently normaldevelopment of other floral parts.For selecting effective male sterilelines,the breeding methods were suggested by the author.To theauthor's opinion,the available material A_2I could be used to makehybrid rapes for breeding purpose,

对白菜型油莱(B.chinensis L)和甘蓝型油菜(B.napus L)雄性不育的花器形态进行了大量观测,结果表明:雄性不育油菜的花器存在着多种形态和育性程度的变异,初步可以分为六种花器类型。本文叙述了其中有实用价值的败药不育型的花器形态特征,分析了花器形态变异与育性的关系,提出了选育有效雄性不育油菜的花器形态指标:1.雄蕊不育性彻底稳定(以花药色浅呈坏死色泽,花药扁平即侧面无外凸增厚为主要特征。);2.雄蕊可育性好,自然结角结籽率高;3.其它花器官形态功能接近正常。对油菜有效雄性不育的选育方法也作了介绍,指出 A_2I 是选育有效雄性不育系的主要研究材料。

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。

 
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