摘要
The bottle neck of advancement of soybean breeding inthe Northeast of China is the lack of genetic diversity of the parents used in cross breeding.In order to overcome this constrained condition,under the sponsorship of China National Committe of Natural Science Fundation,a network project with the topic'Broadening and Improving of the Genetic Basis of the Northeast Soybeans'was established in 1990,and the Northeast Agricultural University was apointed to take charge of the project.The project included the following four items:Ⅰ.Breeding high yield and improved quality Northeast Soybeans,directed by Hcilongjiang Academy of Agricultural Science.Ⅱ.Development of new soybean gerplasms highly resistant to diseases epidemic in Northeast China directed by Northeast Agricultural university.Ⅲ.Exploitation of the potential of wild and semicultivated soybeans for broadening and improving the genetic basis of Northeast soybeans,directed by Jilin Academy of Agricultural Science.Ⅳ.Improving methods and technique for development of new soybean genetic resources,directed by Nanjing Agricultural University. Each item contained several research subjects conducted by research workers of different institutes of agricultural sciences.During the period 1991-1992,considerable promising new germplasms had been discovered or developed.The new germplasms not only possessed specific improved characters but also behaved with appropriate ecological types adapted to different conditions of Northeast.Among the numerous new germplasms developed,Gong Jio 8757-3 had a protein content of 49.41 %,100 seed weight 16-17 g,and acceptable agronomic characters,which was considered a very valuable new high protein content germplasm.Such developed new germplasms with enforced and improved genetic basis will be used primarily as parents in soybean cross breeding.
The bottle neck of advancement of soybean breeding inthe Northeast of China is the lack of genetic diversity of the parents used in cross breeding.In order to overcome this constrained condition,under the sponsorship of China National Committe of Natural Science Fundation,a network project with the topic'Broadening and Improving of the Genetic Basis of the Northeast Soybeans'was established in 1990,and the Northeast Agricultural University was apointed to take charge of the project.The project included the following four items:Ⅰ.Breeding high yield and improved quality Northeast Soybeans,directed by Hcilongjiang Academy of Agricultural Science.Ⅱ.Development of new soybean gerplasms highly resistant to diseases epidemic in Northeast China directed by Northeast Agricultural university.Ⅲ.Exploitation of the potential of wild and semicultivated soybeans for broadening and improving the genetic basis of Northeast soybeans,directed by Jilin Academy of Agricultural Science.Ⅳ.Improving methods and technique for development of new soybean genetic resources,directed by Nanjing Agricultural University. Each item contained several research subjects conducted by research workers of different institutes of agricultural sciences.During the period 1991-1992,considerable promising new germplasms had been discovered or developed.The new germplasms not only possessed specific improved characters but also behaved with appropriate ecological types adapted to different conditions of Northeast.Among the numerous new germplasms developed,Gong Jio 8757-3 had a protein content of 49.41 %,100 seed weight 16-17 g,and acceptable agronomic characters,which was considered a very valuable new high protein content germplasm.Such developed new germplasms with enforced and improved genetic basis will be used primarily as parents in soybean cross breeding.
