Metabolite composition is strongly affected by genotype,environment,and interactions between genotype and environment,although the extent of variation caused by these factors may depend upon the type of metabolite.To ...Metabolite composition is strongly affected by genotype,environment,and interactions between genotype and environment,although the extent of variation caused by these factors may depend upon the type of metabolite.To characterize the complexity of genotype,environment,and their interaction in hybrid seeds,50 genetically diverse non-genetically modified(GM) maize hybrids were grown in six geographically diverse locations in North America.Polar metabolites from 553 harvested corn grain samples were isolated and analyzed by gas chromatography–mass spectrometry and 45 metabolites detected in all samples were used to generate a data matrix for statistical analysis.There was moderate variation among biological replicates and across genotypes and test sites.The genotype effects were detected by univariate and Hierarchical clustering analyses(HCA) when environmental effects were excluded.Overall,environment exerted larger effects than genotype,and polar metabolite accumulation showed a geographic effect.We conclude that it is possible to increase seed polar metabolite content in hybrid corn by selection of appropriate inbred lines and growing regions.展开更多
Volvariella volvacea is a popular variety because of its distinct flavor, pleasant taste, higher protein content and shorter cropping duration compared with other cultivated mushrooms. It is also the most expensive mu...Volvariella volvacea is a popular variety because of its distinct flavor, pleasant taste, higher protein content and shorter cropping duration compared with other cultivated mushrooms. It is also the most expensive mushroom in artificial mushrooms.With the development of economy and the industrialization of edible fungi, more and more straw mushroom has been cultivated in northern China, and southern mushroom is moving to northern areas. In this study, based on many years of cultivation experience, the high yield cultivating techniques of V. volvacea was summarized. V. volvacea cultivation consists of five steps, i.e.,composting, pasteurization, spawning, pining and harvesting.展开更多
In order to study the overall deformation of geotechnical model conveniently,the worksite of landslide bridge foundation reinforced by the front and rear row anti-slide piles in Chenglan railway was taken as an exampl...In order to study the overall deformation of geotechnical model conveniently,the worksite of landslide bridge foundation reinforced by the front and rear row anti-slide piles in Chenglan railway was taken as an example.On the basis of shaking tabe test of a 1/40 reduced scale model,the landslide deformation caused by vibration waves was monitored through burying self-made phosphor bronze strips in soil.Combined with the horizontal and vertical coordinates of the bending strain points on the phosphor bronze strips,the digital matrix was converted by applying Renka Cline random matrix generation method,and the two-dimensional contour plots were drawn based on it.The results showed that the two-dimensional contour plots reflected the basic law of landslide deformation reasonably,and it revealed the evolution process of landslide deformation and failure.The research conclusions were consistent with the test phenomenon,which met the basic requirements of overall deformation analysis of landslide model.This proposed method can monitor multiple cross sections and was practical for model test.展开更多
基金financially supported by DuP ont–Pioneer HiB red
文摘Metabolite composition is strongly affected by genotype,environment,and interactions between genotype and environment,although the extent of variation caused by these factors may depend upon the type of metabolite.To characterize the complexity of genotype,environment,and their interaction in hybrid seeds,50 genetically diverse non-genetically modified(GM) maize hybrids were grown in six geographically diverse locations in North America.Polar metabolites from 553 harvested corn grain samples were isolated and analyzed by gas chromatography–mass spectrometry and 45 metabolites detected in all samples were used to generate a data matrix for statistical analysis.There was moderate variation among biological replicates and across genotypes and test sites.The genotype effects were detected by univariate and Hierarchical clustering analyses(HCA) when environmental effects were excluded.Overall,environment exerted larger effects than genotype,and polar metabolite accumulation showed a geographic effect.We conclude that it is possible to increase seed polar metabolite content in hybrid corn by selection of appropriate inbred lines and growing regions.
基金Supported by the Earmarked Fund for Shanghai Modern Edible Fungi-industry Technology Research System(Grant No.201709)
文摘Volvariella volvacea is a popular variety because of its distinct flavor, pleasant taste, higher protein content and shorter cropping duration compared with other cultivated mushrooms. It is also the most expensive mushroom in artificial mushrooms.With the development of economy and the industrialization of edible fungi, more and more straw mushroom has been cultivated in northern China, and southern mushroom is moving to northern areas. In this study, based on many years of cultivation experience, the high yield cultivating techniques of V. volvacea was summarized. V. volvacea cultivation consists of five steps, i.e.,composting, pasteurization, spawning, pining and harvesting.
基金This study is supported by the Major Project Program of the Scientific and Technological Research and Development Plan of the Ministry of Railways,China(Z2012-061)。
文摘In order to study the overall deformation of geotechnical model conveniently,the worksite of landslide bridge foundation reinforced by the front and rear row anti-slide piles in Chenglan railway was taken as an example.On the basis of shaking tabe test of a 1/40 reduced scale model,the landslide deformation caused by vibration waves was monitored through burying self-made phosphor bronze strips in soil.Combined with the horizontal and vertical coordinates of the bending strain points on the phosphor bronze strips,the digital matrix was converted by applying Renka Cline random matrix generation method,and the two-dimensional contour plots were drawn based on it.The results showed that the two-dimensional contour plots reflected the basic law of landslide deformation reasonably,and it revealed the evolution process of landslide deformation and failure.The research conclusions were consistent with the test phenomenon,which met the basic requirements of overall deformation analysis of landslide model.This proposed method can monitor multiple cross sections and was practical for model test.
