The sorghum (Sorghum bicolor (L.) Moench) variety ‘Noeulchal’ was developed and registered by the Department of Southern Area Crop Science, National Institute of Crop Science, in 2019. This variety was developed from the cross between ‘RTx2907’, with white grain, and ’Sodamchal’, with brown grain and semi-dwarf traits. The yield performance of ‘Noeulchal’ was 3.71 MT/ha in a local adaptability test run for two years. It had a culm length of 93 cm, which is 11 cm longer than that of ‘Sodamchal’, a panicle length of 29 cm, a culm 22 mm thick, and a panicle exsertion of 9 cm. It could reduce the lodging problem experienced with current cultivars, and is also adapted to mechanized cultivation. ‘Noeulchal’ has a waxy endosperm with 3.2% amylose and contained high levels of rapidly digestible starch. The rapidly digestible starch with gluten-free flours could contribute to the development of foods with different properties (Registration No. 9105).

The sorghum (Sorghum bicolor (L.) Moench) variety ‘Sodamchal’ was developed and registered by Department of Sothern Area Crop Science, National Institute of Crop Science (NICS) in 2013. This variety was developed from the cross between ‘Hwanggeumchal’ with brown grain and ’Jungmo4001’ with semi-dwarf trait. ‘Sodamchal’ is the first semi-dwarf stature with waxy endosperm ever developed in Korea. The yield performance of ‘Sodamchal’ was 2.95 MT/ha in local adaptability test for 2 years. It had 91 cm culm length, which was 58 cm shorter than that of ‘Hwanggeumchal’, 26.3 cm panicle length, 22.0 mm thickness of culm, 21.1 g in 1,000 grain weight. It could be reduce the lodging problem and also adapted to mechanized cultivation. ‘Sodamchal’ produces high quantities of polyphenol and radical scavenging activitiy with diphenyl-picrylhydrazyl (DPPH), 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) in pigmented testa. Above all ‘Sodamchal’ is suitable for use as a parental source for the development of improved pollinator parent lines for developing semi-dwarf sorghum with waxy endosperm and antioxidant activity. (Variety registration No. 6244)

The sorghum (Sorghum bicolor (L.) Moench) variety ‘Sodamchal’ was developed and registered by Department of Sothern Area Crop Science, National Institute of Crop Science (NICS) in 2013. This variety was developed from the cross between ‘Hwanggeumchal’ with brown grain and ’Jungmo4001’ with semi-dwarf trait. ‘Sodamchal’ is the first semi-dwarf stature with waxy endosperm ever developed in Korea. The yield performance of ‘Sodamchal’ was 2.95 MT/ha in local adaptability test for 2 years. It had 91 cm culm length, which was 58 cm shorter than that of ‘Hwanggeumchal’, 26.3 cm panicle length, 22.0 mm thickness of culm, 21.1 g in 1,000 grain weight. It could be reduce the lodging problem and also adapted to mechanized cultivation. ‘Sodamchal’ produces high quantities of polyphenol and radical scavenging activitiy with diphenyl-picrylhydrazyl (DPPH), 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) in pigmented testa. Above all ‘Sodamchal’ is suitable for use as a parental source for the development of improved pollinator parent lines for developing semi-dwarf sorghum with waxy endosperm and antioxidant activity. (Variety registration No. 6244)

This study was carried out to develop new zoysiagrass (Zoysia japonica Steud.) cultivar ‘Halla Green 2’ (Grant number: No. 118). To develop a zoysiagrass cultivar with dwarfism by using the mutation breeding method, the wild type control "Gosan" plants were irradiated using a 30 Gy gamma ray source in 2010. Dwarf mutants were selected from the mutated grasses in successive generations. Dwarf mutant lines were identified and a new zoysiagrass variety Halla Green 2 was developed. The plant height of Halla Green 2 was 3.4 and 1.8 times lower than that of Gosan and Zenith, respectively. This cultivar has dwarf characteristics such as shorter sheath, shorter leaf blade, shorter flag leaf, and shorter third internode of stolon compared to those of Gosan and Zenith. Additionally, the sheaths and leaf blades color of Gosan, Zenith and Halla Green 2 were all light green, whereas their stolons were purple, yellow-green and yellow green, respectively. Trichomes(hairs) were visible on both adaxial and abaxial surfaces of the Gosan leaves, whereas only on the adaxial side of the Zenith and Halla Green 2 leaves. The Halla Green 2 grass showed distinguishable morphological traits compared to those of wild type Gosan and Zenith.

To develop a dwarf turfgrass (Zoysia japonica) cultivar with artificial mutation-induced breeding method, the wild type control "Gosan" plants were exposed to a 30 Gy gamma ray source in 2010. The mutant lines showing short height were selected from successive generations. One of the resulting dwarf lines obtained was registered under the cultivar name of “Halla Green 1” (2016). The dwarf phenotype of the Halla Green 1 includes a reduction of the height by 4.5-fold, an increase in leaf and third internode lengths by about 6- and 2.3-fold, respectively, compared to the Gosan, and approximately 2.4-, 3.8-, and 1.5-fold relative to the Zenith, respectively. In addition, the Halla Green 1 had a sheath of darker green coloring compared to the light green Gosan and Zenith. The leaf blades of Gosan, Zenith and Halla Green 1 were all light green, whereas their stolons were purple, yellow-green and light purple, respectively. Trichomes presented on both adaxial and abaxial surfaces of the Gosan’s leaves, and only on the adaxial side of the Zenith’s leaves, but none on the Halla Green 1 leaves. The Halla Green 1 exhibited sufficiently distinct morphological traits when compared with the wild type Gosan and Zenith that the dwarf phenotype enhances its commercial viability.