黑谷子新品种丹谷2号为野生谷子变异植株中经株系选择选育而成。在甘肃省进行的多点试验中，平均折合产量4 446.53 kg/hm2，较对照品种定西黑谷子增产10.17%。生育期140 d，株高110～130 cm，穗长15～30 cm，千粒重3.3 g。籽粒含粗蛋白87.6 g/kg、胡萝卜素4.7 mg/kg、花青素19.1 mg/kg、钙236.76 mg/kg、铁132.38 mg/kg、锌30.6 mg/kg、硒3.26 mg/kg。适宜甘肃省灌区无霜期140 d以上的区域种植。

Dangu 2 is a black new millet variety in the wild millet in mutant plants by strain selection. The average yield of the new variety is 4 446.53 kg/hm2 and 10.17% higher than of the check Dingxi black millet s in Gansu province multi point test. The result shows that the growth period， the plant height， ear length， thousand grain weight， bulk density， seed crude protein， Carotene， anthocyanin， calcium， ironzinc， selenium are 140 days， 110～130 cm， 15～30 cm， 3.3 g， 87.6 g/kg， 4.7 mg/kg 19.1mg/kg， 236.76 mg/kg， 132.38 mg/kg， 30.6 mg/kg， 3.26 mg/kg， respectively. It is suitable to be grown in more than 140 days regional plant frost free period in Gansu province.

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