Genetic variations for grain yield and tannin content of grain sorghums (Sorghum bicolor L. Moench.)

Choi, B.H.; Park, K.Y.; Son, Y.H.

The Research Reports of the Rural Development Administration - Upland and Indus 32(3): 39-45


Sorghum has been known as a resistant crop to drought and black streaked dwarf virus, and also would outyield maize in some environments when well managed. Its production areas are also increasing dramatically in many locations of the world including some traditionally maize-growing areas. Thus, the objective of the study was to investigate variations of grain productivity and tannin content of sorghum lines introduced from the United States of American and China, and of Korean sorghum varieties to develop superior varieties and/or hybrids of grain sorghums for human and domestic animals. Culm length of sorghums examined was 121 cm in mean ranging from 73 cm to 272 cm. The highest grain yield was 79g per plant being above 800 kg/10a and being 49g/plant in mean. The lines above 60g/plant being above 600 kg/10a were 6011, 6012, 6016, 6017, 8806-2, 8806-5, and FS-5. Korean sorghum lines contained the highest tannin ranging from 2.75% to 9.03%. However, the tannin content was very low for the lines introduced from the United States of American being lower than 1.0%. Cytoplasmic male sterile lines MA-9, MB-9, 8050A, 8050B, T623A and T623B also had very low tannins ranging from 0.20% to 0.41%. It was detected to be possible to develop high-yielding dwarf low or high-tannin varieties and/or hybrids of grain sorghum adaptable to Korean environmentgal conditions.