The Study on the Maturity Group of Soybean Varieties in Hailun in the Centre of Black Soil Region in Northeast China

To promote the scientific introduction of soybean varieties among different cultivation regions in China,14 soybean varieties including the major varieties and new varieties of Hailun city were compared with 13 MG standard varieties of North America including MG000-MGI maturity groups. The results showed that all standard varieties could mature in Hailun station in autum from 2011-2014 with exception of PI548596 in 2011,indicating that selected reference varieties were suitable for the climatic conditions in Hailun city. The tested 14 varieties from Hailun belong to MG00-MGI maturity groups,and 84% of major and new varieties belong to MGI maturity group. However,the control variety of Chinese national and province experiments,Suinong 14,belonged to MG0 in 2011 and 2013,but to MGI in 2012 and 2014.