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송인자(In-Ja Song),선현진(Hyeon-Jin Sun),정옥철(Ok-Cheol Jeong),양대화(Dae-Hwa Yang),진일두(Il-Doo Jin),강홍규(Hong-Gyu Kang),고석민(Suk-Min Ko),권용익(Yong-Ik Kwon),배태웅(Tae-Woong Bae),송필순(Pill-Soon Song),이효연(Hyo-Yeon Lee) 한국육종학회 2017 한국육종학회지 Vol.49 No.1
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.