The maize DNA fragments was successfully incorporated into rice by Associate Prof WAN Wenju’s research team at Hunan Agricultural College, Changsha, China. The new gene transferring rice is named Genetic Engineered R...The maize DNA fragments was successfully incorporated into rice by Associate Prof WAN Wenju’s research team at Hunan Agricultural College, Changsha, China. The new gene transferring rice is named Genetic Engineered Rice (GER) line. The team put dry embryo of rice cultivar Xiangzaoxian 8 in the solution containing maize DNA using a modified method of embryo soaking to introduce the exotic DNA into the rice embryo. By selections through successive generation, promising rice lines were finally developed from progenies having required variations. DNA molecular test showed that the lines have already got some maize DNA fragments. The line GER-1 is of the most productive among the new rice lines. It has strong tillering ability and large sized panicles with an average number of 200 grains per panicle and 80% seed-setting rate. It gives a展开更多
The maize pollens were implanted with seven different doses of 30 keV N+ beam respectively, The genomic DNA polymorphism from treated pollens were analyzed with 104 primers by using RAPD respectively. The results sho...The maize pollens were implanted with seven different doses of 30 keV N+ beam respectively, The genomic DNA polymorphism from treated pollens were analyzed with 104 primers by using RAPD respectively. The results showed that N^+ beam-induced mutation of maize pollens can result in the change of their DNA bases. The mutation is not properly random and its frequency increases with a rise in 30 keV N+ beam doses. It is conformed with A-G transformation, which is one of the most important factors in DNA bases induced by N+ beam.展开更多
文摘The maize DNA fragments was successfully incorporated into rice by Associate Prof WAN Wenju’s research team at Hunan Agricultural College, Changsha, China. The new gene transferring rice is named Genetic Engineered Rice (GER) line. The team put dry embryo of rice cultivar Xiangzaoxian 8 in the solution containing maize DNA using a modified method of embryo soaking to introduce the exotic DNA into the rice embryo. By selections through successive generation, promising rice lines were finally developed from progenies having required variations. DNA molecular test showed that the lines have already got some maize DNA fragments. The line GER-1 is of the most productive among the new rice lines. It has strong tillering ability and large sized panicles with an average number of 200 grains per panicle and 80% seed-setting rate. It gives a
文摘The maize pollens were implanted with seven different doses of 30 keV N+ beam respectively, The genomic DNA polymorphism from treated pollens were analyzed with 104 primers by using RAPD respectively. The results showed that N^+ beam-induced mutation of maize pollens can result in the change of their DNA bases. The mutation is not properly random and its frequency increases with a rise in 30 keV N+ beam doses. It is conformed with A-G transformation, which is one of the most important factors in DNA bases induced by N+ beam.
