[Objective] This study was to investigate the restoring ability of normal indica red rice Ruby and to carry out its restoring gene mapping. [Method] Normal indica red rice Ruby was hybridized with the sterile lines Zh...[Objective] This study was to investigate the restoring ability of normal indica red rice Ruby and to carry out its restoring gene mapping. [Method] Normal indica red rice Ruby was hybridized with the sterile lines Zhenxian 97A, D62A, G46A and D702A to prepare their F1, BC1 and F2 progenies, and the pollen fertilities of these progenies were investigated. Meanwhile the restoring genes were mapped using SSLP. [ Result] For the sterile lines tested, Ruby has a gene to restore their fertilities. This gene is located on the chromosome 7 and shows a genetic distance of 7.4 cM with RM182. Unlike the clustering distribution of the restoring genes on chromosome 10, it is a specific restoring gene. [ Conclusion] it is feasible to breed restoring genes controlling red color characters via transgene and backcross.展开更多
The migrant worker is the special group in the process of Chinese economic and social transition.The migrant workers'poverty has the characteristics as follows:transferability,marginality,intervention,aggregation,...The migrant worker is the special group in the process of Chinese economic and social transition.The migrant workers'poverty has the characteristics as follows:transferability,marginality,intervention,aggregation,development,circulatory cumulativeness and intergenerational transmission of poverty.The migrant workers'poverty includes capital poverty,right poverty and sustainability poverty.The capital poverty and right poverty hamper migrant workers'survival,development and farmer's citizenship,while the sustainability poverty is the root cause of poverty.Only by system reconstruction,endowment of capital and restoration of ability can the migrant workers get rid of the mire of poverty.展开更多
基金Supported by Sci-tech Program for Excellent Young Scientists of Sichuan Province(01ZQ052)~~
文摘[Objective] This study was to investigate the restoring ability of normal indica red rice Ruby and to carry out its restoring gene mapping. [Method] Normal indica red rice Ruby was hybridized with the sterile lines Zhenxian 97A, D62A, G46A and D702A to prepare their F1, BC1 and F2 progenies, and the pollen fertilities of these progenies were investigated. Meanwhile the restoring genes were mapped using SSLP. [ Result] For the sterile lines tested, Ruby has a gene to restore their fertilities. This gene is located on the chromosome 7 and shows a genetic distance of 7.4 cM with RM182. Unlike the clustering distribution of the restoring genes on chromosome 10, it is a specific restoring gene. [ Conclusion] it is feasible to breed restoring genes controlling red color characters via transgene and backcross.
文摘The migrant worker is the special group in the process of Chinese economic and social transition.The migrant workers'poverty has the characteristics as follows:transferability,marginality,intervention,aggregation,development,circulatory cumulativeness and intergenerational transmission of poverty.The migrant workers'poverty includes capital poverty,right poverty and sustainability poverty.The capital poverty and right poverty hamper migrant workers'survival,development and farmer's citizenship,while the sustainability poverty is the root cause of poverty.Only by system reconstruction,endowment of capital and restoration of ability can the migrant workers get rid of the mire of poverty.
