In order to investigate salt-tolerant sorghum germplasms that can grow in saline soil from newly reclaimed land, we measured a well-established germination rate, and growth characteristics including leaf number, height, and root length in salt-treatment conditions (0.3, 0.6, 0.8, and 1.2%) and untreated control. The highly salt-tolerant sorghum line was confirmed using PCA (principal component analysis) analysis and fuzzy comprehensive evaluation method. Germination rate gradually decreased at doses higher than 0.3%, but the germination rates reached about 70% in IT124115, IS1041, Dansusu4ho, and Dansusu2ho germplasms. At 0.6% salt-treatment condition, the germination rates ranged from 35% to 100%. Only seven germplasms (IT103274, IT101381, IT104110, Dansusu4ho, IS20740, IS22720, and IS27887) had germination rates exceeding 50% at 0.8% salt-treatment. At 1.2% salt-treatment IT124115, IT028385, and IS1041 withered. The total number of leaves decreased similarly for both germplasms at salt levels below 0.6%, and sweet sorghum leaf count was more susceptible than grain sorghum at doses higher than 0.8%. In addition, the height of both germplasms was severely reduced even at low salt concentrations, whereas grain sorghum exhibited a greater sensitivity to salinity stress in terms of root length, while sweet sorghum had longer roots at low concentrations when compared with the untreated control. PCA analysis and fuzzy comprehensive evaluation showed that 29 sorghum accessions could be divided into 3 groups based on the germination rate and morphological traits. Especially, sweet sorghum accessions showed a different pattern of PCA plot when compared with the grain sorghum, and salt tolerance could be divided into 5 groups using MFV in terms of their traits. Taken together, the results from this work will contribute to the development of domestic agriculture utilizing marginal land such as reclaimed land by selecting elite sorghum germplasms that have a high salt tolerance and capacity.

To improve their income, farmers should cultivate sorghum varieties with high productivity, short breeding period, and easy double cropping. To increase purchases by consumers, the sorghum variety must have health-related functions. To meet these demands, the 'Cheongpung' variety has been raised through net separation from the traditional species of the Chungbuk region as a sorghum variety that can be harvested by machine, have the highest yield in the country, and have the most abundant antioxidant content. The seed coat of ‘Cheongpung’ was reddish-brown, and had the characteristic of early maturation; it required only 107 days from sowing to harvest. Its culm length was 89 cm, the smallest among domestic cultivated varieties. It could also be harvested by machine without difficulty. Compared with the ‘Hwanggeumchal’ variety, the number of ear per plant in ‘Cheongpung’ was approximately 1.3, but each ear piece weighed 66.2 g, weighing 3.8 g, and the thousand-grain weight was 1.4 grams higher than the rough-grain weight. A local adaptation test in five regions nationwide for two years led to a ‘Cheongpung’ yield of 359 kg/10a, which was the highest among domestic cultivated varieties. In addition, the polyphenol content of ‘Cheongpung’ was 29% higher than that of ‘Hwanggeumchal’. (Registration No. 7717)