The constant evolution of pathogens poses a threat to wheat resistance against diseases,endangering food security.Developing resistant wheat varieties is the most practical approach for circumventing this problem.As a...The constant evolution of pathogens poses a threat to wheat resistance against diseases,endangering food security.Developing resistant wheat varieties is the most practical approach for circumventing this problem.As a close relative of wheat,Aegilops geniculata,particularly accession SY159,has evolved numerous beneficial traits that could be applied to improve wheat.In this study,we established the karyotype of SY159 by fluorescence in situ hybridization(FISH)using the oligonucleotide probes Oligo-pTa535 and Oligo-pSc119.2 and a complete set of wheat–Ae.geniculata accession TA2899 addition lines as a reference.Using specific-locus amplified fragment sequencing(SLAF-seq)technology,400 specific markers were established for detecting the SY159 chromosomes with efficiencies reaching 81.5%.The SY159-specific markers were used to classify the different homologous groups of SY159 against the wheat-Ae.geniculata addition lines.We used these specific markers on the 7Mg chromosome after classification,and successfully confirmed their suitability for studying the different chromosomes of SY159.This study provides a foundation for accelerating the application of SY159 in genetic breeding programs designed to improve wheat.展开更多
Based on a detailed analysis of all the works written by contemporary American writer Philip Roth,Xin Huimin’s monograph A Study of the Writing of the Memories in Philip Roth’s Fiction divides his literary writing c...Based on a detailed analysis of all the works written by contemporary American writer Philip Roth,Xin Huimin’s monograph A Study of the Writing of the Memories in Philip Roth’s Fiction divides his literary writing career of more than half a century into three phases:the Jewish writing phase,the American writing phase and the phase of“late style”writing.Drawing on related theories of memory,Xin explores how the protagonists in Roth’s seven novels use their various modes of memory to fashion and reconstruct their ethnical,national and personal identity,and further points out that these three distinct phases correspond to Roth’s shifts from a Jewish writer,an American writer,and to an aging writer.The book comprehensively manifests Roth’s ethical concerns,his political appeal and the aesthetic value of his works.展开更多
本文推广了Roth的关于分布不均匀性的一个不等式到很一般的情况。设Ω为R^m中一区域,f∈C^m(Ω)。P_1…P_N为Ω内N个点。记S(x^1,…,x^m)为在(—∞,,x^1)×…×(—∞,x^m)内的点数。记Δ(t)={x∈Ω||(?)~mf(x/(?)x^1…(?)x^m|...本文推广了Roth的关于分布不均匀性的一个不等式到很一般的情况。设Ω为R^m中一区域,f∈C^m(Ω)。P_1…P_N为Ω内N个点。记S(x^1,…,x^m)为在(—∞,,x^1)×…×(—∞,x^m)内的点数。记Δ(t)={x∈Ω||(?)~mf(x/(?)x^1…(?)x^m|≥t)。ρ(x,(?)Δ(t))为x到Δ(t)的边界距离,则integral from n=Ω[S(x)-f(x)]~2dv≥c(m)(logN)^(m-1)N^(-2) integral from n=0 to ∞(t integral from n=Δ(t) (ρ(x,(?)Δ(t))~mdv)dt.展开更多
基金funded by the National Natural Science Foundation of China(31471481)the Project of Science and Technology of Shaanxi Province of China(2021NY-081 and 2023YBNY-033)。
文摘The constant evolution of pathogens poses a threat to wheat resistance against diseases,endangering food security.Developing resistant wheat varieties is the most practical approach for circumventing this problem.As a close relative of wheat,Aegilops geniculata,particularly accession SY159,has evolved numerous beneficial traits that could be applied to improve wheat.In this study,we established the karyotype of SY159 by fluorescence in situ hybridization(FISH)using the oligonucleotide probes Oligo-pTa535 and Oligo-pSc119.2 and a complete set of wheat–Ae.geniculata accession TA2899 addition lines as a reference.Using specific-locus amplified fragment sequencing(SLAF-seq)technology,400 specific markers were established for detecting the SY159 chromosomes with efficiencies reaching 81.5%.The SY159-specific markers were used to classify the different homologous groups of SY159 against the wheat-Ae.geniculata addition lines.We used these specific markers on the 7Mg chromosome after classification,and successfully confirmed their suitability for studying the different chromosomes of SY159.This study provides a foundation for accelerating the application of SY159 in genetic breeding programs designed to improve wheat.
文摘Based on a detailed analysis of all the works written by contemporary American writer Philip Roth,Xin Huimin’s monograph A Study of the Writing of the Memories in Philip Roth’s Fiction divides his literary writing career of more than half a century into three phases:the Jewish writing phase,the American writing phase and the phase of“late style”writing.Drawing on related theories of memory,Xin explores how the protagonists in Roth’s seven novels use their various modes of memory to fashion and reconstruct their ethnical,national and personal identity,and further points out that these three distinct phases correspond to Roth’s shifts from a Jewish writer,an American writer,and to an aging writer.The book comprehensively manifests Roth’s ethical concerns,his political appeal and the aesthetic value of his works.
文摘本文推广了Roth的关于分布不均匀性的一个不等式到很一般的情况。设Ω为R^m中一区域,f∈C^m(Ω)。P_1…P_N为Ω内N个点。记S(x^1,…,x^m)为在(—∞,,x^1)×…×(—∞,x^m)内的点数。记Δ(t)={x∈Ω||(?)~mf(x/(?)x^1…(?)x^m|≥t)。ρ(x,(?)Δ(t))为x到Δ(t)的边界距离,则integral from n=Ω[S(x)-f(x)]~2dv≥c(m)(logN)^(m-1)N^(-2) integral from n=0 to ∞(t integral from n=Δ(t) (ρ(x,(?)Δ(t))~mdv)dt.
