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系杂交水稻
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  line hybrid rice
     Based on the analyses of the practice on breeding of two line hybrid rice in Zhejiang Province, some suggestions are effered to promote relative research forward.
     在分析浙江省光温敏不育系和两系杂交水稻研究现状的基础上,提出了进一步解放思想、因地制宜发挥优势开拓创新浙江省两系杂交水稻的建议
短句来源
     The effect of selection on the fertility of photo and thermosensitive genic male sterile (PTGMS) lines with high generation in rice after the treatments of 22~23℃ low temperature in phytotron were studied during 1997-2000, using Pei'ai 64S, the most widelyemployed indicatype PTGMS line in commercial production of twoline hybrid rice, and its selected filial lines as the materials.
     1997—2000年,以两系杂交水稻生产上应用最广泛的籼型实用光温敏核不育系培矮64S及其后代选系为材料,藉人工气候室的人控低温条件,研究了在22~23℃的低温处理下对高世代光温敏不育系的育性实施选择的效果。
短句来源
     HIGH YIELD AND QUALITY PRESERVING PRIN CIPLES AND TECHNOLOGIES IN THE TWO LINE HYBRID RICE PEILIANGYOU288′S SEED PRODUCTION
     两系杂交水稻培两优288高产保质制种原理与技术
短句来源
     BREEDING OF THE NEWLY DEVELOPED THREE LINE HYBRID RICE XINXIANGYOU 80
     三系杂交水稻新组合新香优80的选育
短句来源
     A comparative study on the photosynthesis and senescence in two line and three line hybrid rice indicated that leaf senescence was associated with the decrease in superoxide dismutase activity and chlorophyll, soluble protein content, and the marked increase in malondialdehyde content.
     对籼型两系与三系杂交水稻群体光合作用和衰老特性进行了比较 ,研究结果表明齐穗后剑叶叶绿素和可溶性蛋白质含量、超氧化物歧化酶活性、群体光合速率、脂质过氧化产物丙二醛含量、群体干物质生产量在组合间差异达极显著水平 ,两系和三系中各有指标值高低的组合 ;
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  “系杂交水稻”译为未确定词的双语例句
     Liangyou 2186, a New Two-line Hybrid Rice Combination
     两系杂交水稻新组合两优2186
短句来源
     TWO-LINE HYBRID RICE MALE STERILE LINE 'NHR111S' WITH A MARKER OF GREEN-REVERTIBLE ALBINO LEAVES
     携带白化转绿型叶色标记两系杂交水稻不育系NHR111S
短句来源
     Xinxiangyou 80 newly-developed by Institute of Rice Science of Hunan Agricultural University is a three-line hybrid rice.
     新香优 80是湖南农业大学水稻科学研究所用本所选育的优良恢复系 80与湖南杂交水稻研究中心选育的新香A配制而成的三系杂交水稻新组合。
短句来源
     Breeding of the Newly-developed Two-line Hybrid Rice Peiliangyou 288
     两系杂交水稻新组合培两优288的选育
短句来源
     Study on Cultivation Pattern of Combination of Two-line Hybrid Rice-Liangyou 681
     两系杂交水稻两优681高产栽培模式研究
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  相似匹配句对
     Quality breeding in three-line hybrid rice
     三杂交水稻优质育种
短句来源
     PROGRESS OF TW0-LINE SYSTEM HYBRID RICE BREEDING
     两杂交水稻研究的进展
短句来源
     Hybrid Rice in China
     中国的杂交水稻
短句来源
     Genetic Studies on 1000-Grain Weight of Hybrid Rice by Two-Line Method
     两杂交水稻千粒重的遗传研究
短句来源
     Characteristics of Pre-harvest Sprouting in Sterile Lines in Hybrid Rice Seeds Production
     杂交水稻制种不育穗上发芽特性
短句来源
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  line hybrid rice
A comparative study on the photosynthetic parameters among intergeneric progenies derived fromOryza sativa L.×Sorghum vulgare L., its maternal parent Gui 630 and commercial 3-line hybrid rice Shanyou 63 in pot experiment in greenhouse was conducted.
      
Several two-line hybrid rice crosses using this system are under development.
      
Strategy and utilization of a herbicide resistance gene in two-line hybrid rice
      
Super-rice hybrids are two-line hybrid rice cultivars with 15 to 20 % higher yields than the raditional three-line hybrid rice cultivars.
      
The three-line hybrid rice system was invented in 1973 and then production of hybrid rice began in 1974.
      


An investigation of the protein content of 22“two-line” bybrid(the F_1s of crosscombinations with nuclear male sterile lines as the maternal parents and fertility restorers asthe pollen parents)rice varieties and their parents and a correlation analysis of the data ob-tained showed thatgrain protein content of the sterile line exerted a positive effect on theprotein content of the F_1s while the effect of the pollen parent and the mean value of thetwo parents appeared to be negative.It is recommended that in”two-line”...

An investigation of the protein content of 22“two-line” bybrid(the F_1s of crosscombinations with nuclear male sterile lines as the maternal parents and fertility restorers asthe pollen parents)rice varieties and their parents and a correlation analysis of the data ob-tained showed thatgrain protein content of the sterile line exerted a positive effect on theprotein content of the F_1s while the effect of the pollen parent and the mean value of thetwo parents appeared to be negative.It is recommended that in”two-line” breeding forhigher protein content,nuclear male sterile lines with high protein content be used as thematcrnal parent and parents with high specific combining ability for protein content bechosen for the cross combinations.

对22个“二系”杂交水稻杂种一代及其亲本的蛋白质含量的研究表明,母本蛋白质含量对杂种一代有正向作用,而父本以及双亲平均值均呈负向作用,居中组合较少。在水稻“二系”育种中,应利用蛋白质含量较高的核不育两用系作母本,并选择对蛋白质含量有较高特殊配合力的父母本配组,才可能育出有较高蛋白质含量的“二系”杂交稻。

Compared with three-line hybrid rice, two-line intersubspecieshybrid rice (TLIHR) has more grains per ear and a higher proportion of empty-unfilled grains (EUG). Degrees of grain plumpness vary with the TLIHRcombinations. Combinations with stronger carborn assimilation ability, slowersenscence speed and smaller sink capacity have lower proportion of EUG. It issuggested that big capacity with source shortage was one of the main physiologi-cal factors for the higher EUG proportion of TLIHR. Measures of improvingsource,...

Compared with three-line hybrid rice, two-line intersubspecieshybrid rice (TLIHR) has more grains per ear and a higher proportion of empty-unfilled grains (EUG). Degrees of grain plumpness vary with the TLIHRcombinations. Combinations with stronger carborn assimilation ability, slowersenscence speed and smaller sink capacity have lower proportion of EUG. It issuggested that big capacity with source shortage was one of the main physiologi-cal factors for the higher EUG proportion of TLIHR. Measures of improvingsource, flow and sink relationship are discussed.

与“三系”杂交水稻比较,两系亚种间杂交水稻穗大粒多,库容优势明显,空秕率高,不同的两系亚种间杂交水稻组合,籽粒充实状况不同。其中碳素同化能力比较强,衰老速度比较慢、库容比较小的组合,空秕率比较低。因而认为库大源不足是导致两系亚种间杂交水稻高空秕率的重要生理原因之一。并讨论了提高两系亚种闻杂交水稻源、流、库协调程度的措施。

The key of the seed production in two——line hybrid rice is selection ofthe theoretical heading and flowering periods.In the periods the fertility alt-erations of the Dual-purpose Genic Male——sterile line need specially light andtemperature conditions.the definition on difference of the paternal and ma-ternal sowing time is essential conditions of parental flowering period meet-ing.If the high yield of the seed production,the rates of cross seed——settingwere been increased,owing to the self mix in two—line hybrid...

The key of the seed production in two——line hybrid rice is selection ofthe theoretical heading and flowering periods.In the periods the fertility alt-erations of the Dual-purpose Genic Male——sterile line need specially light andtemperature conditions.the definition on difference of the paternal and ma-ternal sowing time is essential conditions of parental flowering period meet-ing.If the high yield of the seed production,the rates of cross seed——settingwere been increased,owing to the self mix in two—line hybrid rice plant,mix—preventing and purity—preserving is the focal points of the seed prod-uction.

系杂交水稻制种能否成功,选择抽穗开花期是关键;确定父母本播差期是保证花期相遇的基本条件;制种能否高产,应以提高异交结实率为主攻方向,而两系杂交稻制种的难点在于防杂保纯.

 
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