高粱是一种抗旱、耐盐的高产作物,在苏联主要用作饲料。然而,众所周知,当植株中单宁含量在2％以上时,植株体的饲用价值就显著降低(Harris等,1970;Hahn等,1984)。另一方面,单宁的存在有助于减少昆虫(蚜科等)和鸟类对作物的危害,同时提高作物对不良天气条件的适应性(Doherty等,1987)。因此,在进行高粱作物育种时,测定高粱品系及品种的单宁含量具有实际意义。试材是苏丹草、高粱及高粱-苏丹草杂交种,分别将籽粒、茎秆和叶片磨成细粉并测定 Sorghum is a drought-tolerant and salt-tolerant high-yield crop that is mainly used as feed in the Soviet Union. However, it is well known that the plant value of a plant is significantly reduced when tannin content is above 2% in plants (Harris et al., 1970; Hahn et al., 1984). On the other hand, the presence of tannin helps to reduce the damage to crops from insects (aphididae, etc.) and birds while improving the crop’s adaptability to bad weather conditions (Doherty et al., 1987). Therefore, in the sorghum crop breeding, determination of sorghum strains and varieties of tannin content of practical significance. The test material is Sudan grass, sorghum and sorghum - sudangrass hybrids, the seeds, stems and leaves were ground into fine powder and measured