Elite maintainer lines and restorer lines have been developed by genomic DNA transformation,Analyses of molecular markers, DNA sequences, and Southern blotting have revealed that high DNA polymorphism exists between n...Elite maintainer lines and restorer lines have been developed by genomic DNA transformation,Analyses of molecular markers, DNA sequences, and Southern blotting have revealed that high DNA polymorphism exists between new developed lines and its receptors, indicating that the special DNA fragment from distant relatives may be integrated into the genome of rice. And several combinations with the potential of super-high yield have been developed from these lines. Therefore, transformation of genomic DNA from distant relatives to the plant of a target receptor may open an avenue for breeding of super-hybrid rice.展开更多
Rice is the staple food for more than half of the world population. The utilization of the wild abortive cytoplasmic male sterility （CMS） in 1970s has significantly raised rice yield potential. But the world＇s annu...Rice is the staple food for more than half of the world population. The utilization of the wild abortive cytoplasmic male sterility （CMS） in 1970s has significantly raised rice yield potential. But the world＇s annual rice production will have to increase 70 percent over the next 30 years, to keep up with the demends of the growing population.展开更多
This paper describes in a general way the objectives, contents and methods of molecular breeding, and the application of molecular breeding in hybrid rice.
文摘Elite maintainer lines and restorer lines have been developed by genomic DNA transformation,Analyses of molecular markers, DNA sequences, and Southern blotting have revealed that high DNA polymorphism exists between new developed lines and its receptors, indicating that the special DNA fragment from distant relatives may be integrated into the genome of rice. And several combinations with the potential of super-high yield have been developed from these lines. Therefore, transformation of genomic DNA from distant relatives to the plant of a target receptor may open an avenue for breeding of super-hybrid rice.
基金The study was supported by Hi-tech Research and Development Project of China （No. 2004AA211142）, National Natural Science Foundation of China （No. 30270819）. The development of source materials used in the study was supported by the Rockefeller Foundation.
文摘Rice is the staple food for more than half of the world population. The utilization of the wild abortive cytoplasmic male sterility （CMS） in 1970s has significantly raised rice yield potential. But the world＇s annual rice production will have to increase 70 percent over the next 30 years, to keep up with the demends of the growing population.
文摘This paper describes in a general way the objectives, contents and methods of molecular breeding, and the application of molecular breeding in hybrid rice.
