Abstract: 【Objective】The objective of this study was to solve the difficult problem that adapted crops is single and inefficient in high altitude and cold areas of China.【Method】Using "target character gene bank breeding method", a new millet germplasm Super Prematurity No.2 was developed.【Result】It has some prominent characters: (1) It can normally mature in Bashang of Hebei where the altitude is above 1400 meters. It needs effective accumulated temperature 1650℃ in growing period. (2) The millet is rich in iron and the content of iron is 54.10 mg·kg-1. The average content of iron is 62.0% higher than other varieties in China. (3) The content of crude fat is 6.24%, and the average content of fat is 54.1% higher than other millet varieties. (4) The average content of crude protein of the millet varieties in China is 12.71%, among these varieties, whose crude protein content is higher than 14% is only 5%. The protein content of Super Prematurity No.2 is 14.36%. (5) The synthetic characters are better. 【Conclusion】 It has important significance that super prematurity No.2 has been bred and extended in high altitude and cold areas, thus promoting the development of Super Prematurity millet breeding and the adjusting the structure of crop production in the wide areas with high altitude and low temperature. The practice of super prematurity millet variety breeding indicates that the "targeted-character-gene bank-breeding method" has obvious effects in innovating super prematurity millet and other special idioplasm.

Key words: millet, super- early maturity, well-off iron, crude fat, innovation of germplasm