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relative weeds
相关语句
  “relative weeds”译为未确定词的双语例句
     Potential Approaches for Gene Transfer between Transformed Wheat(Triticum aestivum) and It's Relative Weeds
     转基因小麦中的转基因向它的近缘杂草转移的可能途径(英文)
短句来源
     Three potential approaches of gene transfer between transformed wheat with glufosinate resistant gene and it's relative weeds were studied by investigating the gene flow in the progeny of hybridization.
     通过测定杂交后代的基因的转移 ,研究草甘磷抗性基因从转基因小麦向它的近缘杂草转移的三条可能途径。
短句来源
  相似匹配句对
     With relative protocols,H.
     H.
短句来源
     On Relative Topology
     关于相对拓扑
短句来源
     FORMATION OF WEEDS
     杂草的形成
短句来源
     Approach to Weeds
     走进《野草》
短句来源
     Based on the analysis of their relative abundance, 9 species were important weeds in the area.
     相对多度达10以上的杂草依次为,稗草、鸭跖草、问荆、铁苋菜、香薷、反枝苋,藜、卷茎蓼、苍耳等 9种。
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The research results showed that the height,index and harm period of weeds could strongly affect the yield of wheat.The greater they were,the more severe the loss of yield was.The relative weed height,dry weight,and the harm period had a remarkable negative relationship with wheat yield, ears/hm 2, grains/ear and weights/1000 grains,while they showed a remarkable positive relationship to the rate of wheat yield loss.A simulated equation of weeds to wheat yield loss was established in this...

The research results showed that the height,index and harm period of weeds could strongly affect the yield of wheat.The greater they were,the more severe the loss of yield was.The relative weed height,dry weight,and the harm period had a remarkable negative relationship with wheat yield, ears/hm 2, grains/ear and weights/1000 grains,while they showed a remarkable positive relationship to the rate of wheat yield loss.A simulated equation of weeds to wheat yield loss was established in this paper.The economic threshold for weed control was 102.1 m·g·m -2 of the product of height and dry weight (15-20 plants/m 2 weed density).The critical harm period was just before jointing stage.

研究结果表明,杂草株高、干重指数越大,危害期越长,对小麦产量影响越大,损失越严重。杂草相对株高干重积与危害期对小麦产量及成穗数、穗粒数、千粒重呈极显著负相关;与产量损失率呈极显著“S”型生长曲线正相关,杂草防除经济阈值为株高干重积102.1mgm-2(混合密度为15~20株/m2);危害临界期为小麦拔节前。并建立了混生杂草对小麦危害损失关系数学模型。

Three potential approaches of gene transfer between transformed wheat with glufosinate resistant gene and it's relative weeds were studied by investigating the gene flow in the progeny of hybridization. Theoretically, the gene transfer has three approaches from transformed wheat to weeds by sexual transfer, which are: 1.from selfing F1, forming transgenic population mixed with tetraploids and aneuploids that will go on segregation on the resistance, 2.from the F1 to tetraploid weeds via spontaneous...

Three potential approaches of gene transfer between transformed wheat with glufosinate resistant gene and it's relative weeds were studied by investigating the gene flow in the progeny of hybridization. Theoretically, the gene transfer has three approaches from transformed wheat to weeds by sexual transfer, which are: 1.from selfing F1, forming transgenic population mixed with tetraploids and aneuploids that will go on segregation on the resistance, 2.from the F1 to tetraploid weeds via spontaneous crossing, and 3. from the F1 pollinated by transgenic hexaploid wheat. In this paper, it was confirmed that there exists a potential risk of gene transfer between transformed wheat variety and it's relative weeds. On the sexual transfer approaches, the first route was most unlikely due to the sterile F1 hybrids. The other two approaches were main ways to transfer the gene to the relative weeds because the viable progeny of hybridization would become a bridge of gene flow between transformed wheat variety and weeds, and eventually create a new weed or “super weed”. To escape or mitigate the potential risk, creating multi resistant genes to prolong the use of transformed variety using biotechnology and taking management strategy to escape hybridization were suggested.

通过测定杂交后代的基因的转移 ,研究草甘磷抗性基因从转基因小麦向它的近缘杂草转移的三条可能途径。理论上分析 ,通过有性杂交转基因小麦通过如下三条途径转移它的抗性基因 ,1杂种自交 ,形成抗性分离的含有四倍体和五倍体的转基因混合群体 ;2 .F1与四倍体杂草自发杂交 ;3 .F1与六倍体转基因小麦杂交。研究证实了确实存在转基因小麦中抗性基因向它的近缘杂草转移的风险。但是由于 F1自交不育 ,第一条途径基本上是不可能的 ,第二、第三条途径是基因转移的主要方式。它们的杂交后代是自交可育的 ,有可能成为抗性基因从转基因小麦转移到近缘杂草的桥梁 ,最终形成一种新的杂草 ,即所谓“超级杂草”。根据研究结果 ,建议采用生物技术创造多抗基因系以延长转基因品种的使用 ,采用管理措施以避免杂交发生 ,从而避免或减轻基因转移的风险

 
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