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系杂交
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  line cross
     Three different rice cultivars, characterized by a larger panicle type, such as new plant type rice IR6560085, twoline cross Peiai64S/E32 and threeline cross Eryou86 were used for the experiment to investigate the comparative properties of the production and the partitioning of the dry matter and its relationship with the grain yield during the grainfilling stage.
     以穗型较大的3个不同类型水稻品种(组合)新株型稻IR65600-85、二系杂交稻培矮64S/E32和三系杂交稻 优86为材料,研究其结实期干物质生产与分配的比较特性及与产量的关系.
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  “系杂交”译为未确定词的双语例句
     Yield superiority and applied techniques of Two-line Japonica hybrid rice N5088S/R183
     两系杂交粳稻N5088S/R183的产量优势及应用技术
短句来源
     Breeding of the Two-line Japonica Hybrid Pice N5088S/R187
     两系杂交粳稻N5088S/R187的选配与应用初报
短句来源
     Studies on Applied Basis and Key Techniques of Seed Production in Two-line Hybrid New Combination Kang201S/R527
     两系杂交稻新组合康201S/R527制种应用基础及其关键技术研究
短句来源
     Studies on Cultural Practices for Two-line Indica Hybrid Rice——2301S/H7058
     两系杂交中籼2301S/H7058栽培技术探讨
短句来源
     Photoinhibition and Assimilate Distribution in Two-line hybrid Rice (Oryza sativa L.) PA64S/E32 at Late Development Stage
     两系杂交稻PA64S/E32生育后期的光抑制和光合产物分配
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  相似匹配句对
     Studies on the Growth Rate of Two-line Hybrid Rice
     两杂交稻生长率的研究
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     Quality breeding in three-line hybrid rice
     三杂交水稻优质育种
短句来源
     This EAI system is
     该平台
短句来源
     northern hybridization.
     Northern杂交
短句来源
     C-injective S-acts
     C-内射S-
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  line cross
Variety x line cross - A suggested breeding procedure for maize in developing countries
      
The variety x line cross is suggested as a simple and rapid breeding procedure for the developing countries.
      
Aquamid is the result of a new, patented production method called "In line Cross-Linking Technology" (ILX Technology).
      
QTL analyses were performed both within the half-sib families as well as across families (line cross).
      
The QTL for intramuscular fat on SSC4 could not be detected in this half-sib analysis, whereas under the line cross model a suggestive QTL on a different position on SSC4 was detected.
      
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After testing 70 inreds crossed with a male-sterile line,there were found 1 very strongrestorer and 8 relatively strong restorers,comprising 12.86% of the total inbreds.Hybridsinvolving the male-sterile line usually showed a tendency lower in plant height than thenormal ones but higher in kernel yield.The number of male-sterile and restorer plants,occur-red in the hybrids from crossing the male-sterile and restorer lines was connected closely withthe strength of male-sterility and restoring ability of the parental...

After testing 70 inreds crossed with a male-sterile line,there were found 1 very strongrestorer and 8 relatively strong restorers,comprising 12.86% of the total inbreds.Hybridsinvolving the male-sterile line usually showed a tendency lower in plant height than thenormal ones but higher in kernel yield.The number of male-sterile and restorer plants,occur-red in the hybrids from crossing the male-sterile and restorer lines was connected closely withthe strength of male-sterility and restoring ability of the parental lines,bearing a phenomenonof“dosage effect”.The characteristics of restoring ability might be introduced into the male-sterile line.

统计连年所测验的70个玉米自交系与雄性不育系杂交后的表现,其中具有极高度恢复力者1个,较高度恢复力者8个,共占总数12.86%。利用不育系所组成的杂交种,一般在植株高度上较差,而在果穗籽粒产量上较优。利用不育系与恢复系制造杂交种,其雄性不育和恢复植株的多寡,与亲本品系雄性不育和恢复力的强弱相关连,呈“剂量效应”的现象。恢复力特性可输入到不育系中去。

Our experimental station was organized, according to the proposal of the working team of the peoples' commue, in a three-in-one combination consisting of the cadres, poor and lower-middle peasants and the educated youths. On the basis of the miss scientific activity, the selection work of corn hybrids has carried out no less than 14 hybrids which are adapted to the different sowing seasons, high-yielding and pest-resistant, and consequently raised the yielding record of the entire working team from the 200-300...

Our experimental station was organized, according to the proposal of the working team of the peoples' commue, in a three-in-one combination consisting of the cadres, poor and lower-middle peasants and the educated youths. On the basis of the miss scientific activity, the selection work of corn hybrids has carried out no less than 14 hybrids which are adapted to the different sowing seasons, high-yielding and pest-resistant, and consequently raised the yielding record of the entire working team from the 200-300 catties/mu of 1966 to a level of 600-700 catties/mu, and not a few plots yielded more than 1,000 catties per mu.Our work was mainly to reform some of the original self-bred lines of high com-bining ability but apparently with certain defects (e.g. on the high yielding abilit es, co-ordination of the male and female flowering periods etc.). In selection of the hybrid parents used for reforming the self-bred lines, apart from they must bear the excellent characters needed, the correlation between their relatives has also been taken into account. In crossing the newly reformed combinations of the self-bred lines, the former parent plants which had been used in the reforming operations should not be uesed repeatedly in order to avoid the parental relatives confusion, and maintain its advantage of hybrid vigor.

我所在的试验场,是一个人民公社生产大队主办的,由干部、贫下中农和知识青年三结合的试验场,从1966年起,在群众性科学活动的基础上,进行了玉米杂交育种的选育工作,先后选出适应不同播期的高产抗病的杂交种14个,使全大队的玉米产量由1969年以前的200—300斤/亩,增加到600—700斤/亩,并出现了不少亩产17000斤以上的地块。 我们的工作重点,在于对某些具有高配合力但存在明显缺点(如抗病性、丰产性及雌雄花期的协调性等)的原有自交系的改良方面,用于改良自交系的杂交亲本,除去具有所必须的优良特性以外,还必须考虑到它的亲缘关系,以及改良以后的新自交系的配组问题:改良自交系所用的杂交亲本,不能用于有新系参加的杂交组合之中,以避免杂交组合两亲本的亲缘混乱,以致降低杂种优势失去利用价值。

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...

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。

 
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