A thermo-insensitive pale green leaf mutant （pgl2） was isolated from T-DNA inserted transgenic lines of rice （Oryza sativa L. subsp, japonica cv. Nipponbare）. Genetic analysis indicated that the phenotype was caus...A thermo-insensitive pale green leaf mutant （pgl2） was isolated from T-DNA inserted transgenic lines of rice （Oryza sativa L. subsp, japonica cv. Nipponbare）. Genetic analysis indicated that the phenotype was caused by a recessive mutation in a single nuclear-encoded gene. To map the PGL2gene, an F2 population was constructed by crossing the mutant with Longtefu （Oryza sativa L. subsp, indica）. The PGL2 locus was roughly linked to SSR marker RM331 on chromosome 8. To finely map the gene, 14 new InDel markers were developed around the marker, and PGL2 was further mapped to a 2.37 Mb centromeric region. Analysis on chlorophyll contents of leaves showed that there was no obvious difference between the mutant and the wild type in total chlorophyll （Chl） content, while the ratio of Chl a / Chl b in the mutant was only about 1, which was distinctly lower than that in the wild type, suggesting that the PGL2 gene was related to the conversion between Chl a and Chl b. Moreover, the method of primer design around the centromeric region was discussed, which would provide insight into fine mapping of the functional genes in plant centromeres.展开更多
Paleogene sedimentary basins exposed across much of the central and eastern Tibetan Plateau may record the early history of plateau uplift related to the Indo\|Asian collision. We conducted sedimentological and strati...Paleogene sedimentary basins exposed across much of the central and eastern Tibetan Plateau may record the early history of plateau uplift related to the Indo\|Asian collision. We conducted sedimentological and stratigraphic investigations in the northeastern Qiangtang terrane, eastern Tibetan Plateau. Our results indicate development of several nonmarine basins during Paleogene(?) time, probably synchronous with northeast\|southwest contractional deformation. The Nangqian and Xialaxiu basins (96°～97°E, 32°～33°N) are composed of 500～ 20000m thick successions of primarily clastic sediment indicative of lacustrine and alluvial\|fan depositional processes. Paleocurrent measurements and sediment compositional data indicate local sediment source areas composed of Carboniferous\|Triassic carbonate and sandstone and minor Tertiary volcanic rocks. The large variability of provenance and facies types suggest that each basin evolved independently, as opposed to regional development of a single integrated basin which was partitioned by later deformation.展开更多
P/TGMS (photo-thermo sensitive genie male sterility) lines with pale-green leaf color have been developed in japonica rice. The marker trait is used as an assistant selection in the production of the two-lines system ...P/TGMS (photo-thermo sensitive genie male sterility) lines with pale-green leaf color have been developed in japonica rice. The marker trait is used as an assistant selection in the production of the two-lines system hybrid rice for the improvement of F, seed purity. A joint inheritance study of both leaf color and male sterility is presented for P/TGMS line with pale-green leaf color. The segregation ratios for leaf color in the F2 populations of the three crosses showed 13 : 3 and 15 : 1 at early and late sowing stages (April 26 and June 23) respectively, implying that the leaf color is controlled by two genes with fertility gene as dominant. Sterility level is higher in the early sowing stage than that in the late sowing. The inducement of male sterility is closely related to longer day-length and higher temperature at the developmental stages of young panicle. The genes to govern the leaf color and male fertility are inherited independently.展开更多
Reading Nabokov's Pale Fire is a magical discovery of artistry. Years elapsed, the"who invented whom"question remains an enigma. Through expounding four current interpretations and tracing the relationsh...Reading Nabokov's Pale Fire is a magical discovery of artistry. Years elapsed, the"who invented whom"question remains an enigma. Through expounding four current interpretations and tracing the relationship among the major characters, the real author behind this intriguing work—Nabokov is reshaped. Meanwhile, several fundamental ideas prevalent in his literary creation are discussed, casting some light on the philosophy behind his literary creation.展开更多
Nabokov believes that “art is a method by which the writer is able to cause a special aesthetic experience among thereader”;language, structure, style and other means of expression are always more important than the...Nabokov believes that “art is a method by which the writer is able to cause a special aesthetic experience among thereader”;language, structure, style and other means of expression are always more important than the plot of thework. We can find a vivid embodiment of this creation view in Pale Fire. Because of the method“defamiliarization”, the aesthetics of the whole novel is expressed in three key steps: the introduction of poeticambiguity on Shade’s poem;an explanation of poetic ambiguity by means of Kinbote’s commentary;regenarationof ambiguity through the suspension of Kinbote’s commentary from Shade’s poetic language. The artistic theme ofambiguity is a manifestation of the author’s hidden feelings for the homeland. Nabokov, as an expatriate Russianwriter, is experiencing not only a deep relationship with his homeland, but also a sense of bitterness from being inexile. His impression and memories of hometown beacame the inspiration for creation.展开更多
On the basis of Etsuko’s memory,A Pale View of Hills,a masterpiece of Kazuo Ishiguro,narrates Etsuko’s life experiences and her identity construction.The paper analyses the novel from the perspective of spatial crit...On the basis of Etsuko’s memory,A Pale View of Hills,a masterpiece of Kazuo Ishiguro,narrates Etsuko’s life experiences and her identity construction.The paper analyses the novel from the perspective of spatial criticism proposed by Edward Soja and explores the three-dimensional spaces constructed in the novel in order to explore Etsuko’s attempts to leave the marginal space and analyse her pursuit of identity.The paper comes to the conclusion that by constructing Thirdspace open to all cultures,Etsuko eliminates the dichotomy between Firstspace and Secondspace and embraces her hybrid identity.展开更多
With its uttermost innovate form and its puzzle content, Pale Fire has sustained Nabokov the most intensive scholarly attention ever since its publication. Despite a great deal of criticism on the novel Pale Fire the ...With its uttermost innovate form and its puzzle content, Pale Fire has sustained Nabokov the most intensive scholarly attention ever since its publication. Despite a great deal of criticism on the novel Pale Fire the poem Pale Fire within it has been neglected. This essay commits to analyze this poem from four perspectives, namely its symmetrical structure, the counterpoint of the poem, its parody and intertextuality and its meta-poetic element. By doing the detailed examination this essay proves that this 999 line poem embodies the significant themes of this novel, which are the counterpoint and"a Web of Sense".展开更多
20071213 Guo Xianpu(Institute of Geology, Chinese Academy of Geological Science,Bei- jing 100037);Wang Naiwen Palaeontolog- ical Proof of the Naij Tal Group-Complex as Melange Aggregation in the Eastern Kun- lun Oroge...20071213 Guo Xianpu(Institute of Geology, Chinese Academy of Geological Science,Bei- jing 100037);Wang Naiwen Palaeontolog- ical Proof of the Naij Tal Group-Complex as Melange Aggregation in the Eastern Kun- lun Orogenic Belt and Its Geologic Signifi- cance(Geological Review,ISSN0371-5736, CN11-1952/P,52(3),2006,p.289-294, 2 illus.,2 plates,19 refs.)展开更多
Synthetical research has been done on the geological thermal history of the Turpan\|Hami Basin by using vitrinite reflectance, fluid inclusion geothermometry and fission track. The geotemperature of the Turpan\|Hami B...Synthetical research has been done on the geological thermal history of the Turpan\|Hami Basin by using vitrinite reflectance, fluid inclusion geothermometry and fission track. The geotemperature of the Turpan\|Hami Basin has the character that suggests higher temperature in the past, in the east and south of the basin, and in the areas of large\|fracture, and lower temperature in the present day and in the west and north of the basin. This feature is controlled by the difference of burial depth of basement and heat flow values, which made Permian source rock mature in the late Triassic and Jurassic source rock mature at the end of Jurassic and the early Tertiary.展开更多
20112464Quan Cheng(Key Lab.for Evolution of Past Life and Environment in Northeast Asia,MOE,Jilin University,Changchun 130026,China);Zhou Zhiyan Occurrence of Oligocene Ginkgo Megafossils
文摘A thermo-insensitive pale green leaf mutant （pgl2） was isolated from T-DNA inserted transgenic lines of rice （Oryza sativa L. subsp, japonica cv. Nipponbare）. Genetic analysis indicated that the phenotype was caused by a recessive mutation in a single nuclear-encoded gene. To map the PGL2gene, an F2 population was constructed by crossing the mutant with Longtefu （Oryza sativa L. subsp, indica）. The PGL2 locus was roughly linked to SSR marker RM331 on chromosome 8. To finely map the gene, 14 new InDel markers were developed around the marker, and PGL2 was further mapped to a 2.37 Mb centromeric region. Analysis on chlorophyll contents of leaves showed that there was no obvious difference between the mutant and the wild type in total chlorophyll （Chl） content, while the ratio of Chl a / Chl b in the mutant was only about 1, which was distinctly lower than that in the wild type, suggesting that the PGL2 gene was related to the conversion between Chl a and Chl b. Moreover, the method of primer design around the centromeric region was discussed, which would provide insight into fine mapping of the functional genes in plant centromeres.
文摘Paleogene sedimentary basins exposed across much of the central and eastern Tibetan Plateau may record the early history of plateau uplift related to the Indo\|Asian collision. We conducted sedimentological and stratigraphic investigations in the northeastern Qiangtang terrane, eastern Tibetan Plateau. Our results indicate development of several nonmarine basins during Paleogene(?) time, probably synchronous with northeast\|southwest contractional deformation. The Nangqian and Xialaxiu basins (96°～97°E, 32°～33°N) are composed of 500～ 20000m thick successions of primarily clastic sediment indicative of lacustrine and alluvial\|fan depositional processes. Paleocurrent measurements and sediment compositional data indicate local sediment source areas composed of Carboniferous\|Triassic carbonate and sandstone and minor Tertiary volcanic rocks. The large variability of provenance and facies types suggest that each basin evolved independently, as opposed to regional development of a single integrated basin which was partitioned by later deformation.
基金This research was supported by a grant from China Nationl“863"High Tchnology Proramn,a key grant(2003C22007)“8812”Program from Zhejiang Province,China.
文摘P/TGMS (photo-thermo sensitive genie male sterility) lines with pale-green leaf color have been developed in japonica rice. The marker trait is used as an assistant selection in the production of the two-lines system hybrid rice for the improvement of F, seed purity. A joint inheritance study of both leaf color and male sterility is presented for P/TGMS line with pale-green leaf color. The segregation ratios for leaf color in the F2 populations of the three crosses showed 13 : 3 and 15 : 1 at early and late sowing stages (April 26 and June 23) respectively, implying that the leaf color is controlled by two genes with fertility gene as dominant. Sterility level is higher in the early sowing stage than that in the late sowing. The inducement of male sterility is closely related to longer day-length and higher temperature at the developmental stages of young panicle. The genes to govern the leaf color and male fertility are inherited independently.
文摘Reading Nabokov's Pale Fire is a magical discovery of artistry. Years elapsed, the"who invented whom"question remains an enigma. Through expounding four current interpretations and tracing the relationship among the major characters, the real author behind this intriguing work—Nabokov is reshaped. Meanwhile, several fundamental ideas prevalent in his literary creation are discussed, casting some light on the philosophy behind his literary creation.
文摘Nabokov believes that “art is a method by which the writer is able to cause a special aesthetic experience among thereader”;language, structure, style and other means of expression are always more important than the plot of thework. We can find a vivid embodiment of this creation view in Pale Fire. Because of the method“defamiliarization”, the aesthetics of the whole novel is expressed in three key steps: the introduction of poeticambiguity on Shade’s poem;an explanation of poetic ambiguity by means of Kinbote’s commentary;regenarationof ambiguity through the suspension of Kinbote’s commentary from Shade’s poetic language. The artistic theme ofambiguity is a manifestation of the author’s hidden feelings for the homeland. Nabokov, as an expatriate Russianwriter, is experiencing not only a deep relationship with his homeland, but also a sense of bitterness from being inexile. His impression and memories of hometown beacame the inspiration for creation.
文摘On the basis of Etsuko’s memory,A Pale View of Hills,a masterpiece of Kazuo Ishiguro,narrates Etsuko’s life experiences and her identity construction.The paper analyses the novel from the perspective of spatial criticism proposed by Edward Soja and explores the three-dimensional spaces constructed in the novel in order to explore Etsuko’s attempts to leave the marginal space and analyse her pursuit of identity.The paper comes to the conclusion that by constructing Thirdspace open to all cultures,Etsuko eliminates the dichotomy between Firstspace and Secondspace and embraces her hybrid identity.
文摘With its uttermost innovate form and its puzzle content, Pale Fire has sustained Nabokov the most intensive scholarly attention ever since its publication. Despite a great deal of criticism on the novel Pale Fire the poem Pale Fire within it has been neglected. This essay commits to analyze this poem from four perspectives, namely its symmetrical structure, the counterpoint of the poem, its parody and intertextuality and its meta-poetic element. By doing the detailed examination this essay proves that this 999 line poem embodies the significant themes of this novel, which are the counterpoint and"a Web of Sense".
文摘20071213 Guo Xianpu(Institute of Geology, Chinese Academy of Geological Science,Bei- jing 100037);Wang Naiwen Palaeontolog- ical Proof of the Naij Tal Group-Complex as Melange Aggregation in the Eastern Kun- lun Orogenic Belt and Its Geologic Signifi- cance(Geological Review,ISSN0371-5736, CN11-1952/P,52(3),2006,p.289-294, 2 illus.,2 plates,19 refs.)
文摘Synthetical research has been done on the geological thermal history of the Turpan\|Hami Basin by using vitrinite reflectance, fluid inclusion geothermometry and fission track. The geotemperature of the Turpan\|Hami Basin has the character that suggests higher temperature in the past, in the east and south of the basin, and in the areas of large\|fracture, and lower temperature in the present day and in the west and north of the basin. This feature is controlled by the difference of burial depth of basement and heat flow values, which made Permian source rock mature in the late Triassic and Jurassic source rock mature at the end of Jurassic and the early Tertiary.
文摘20112464Quan Cheng(Key Lab.for Evolution of Past Life and Environment in Northeast Asia,MOE,Jilin University,Changchun 130026,China);Zhou Zhiyan Occurrence of Oligocene Ginkgo Megafossils
