한국잔디 신품종 ‘세찬’ 개발 = Development of the New Zoysiagrass Cultivar ‘Sechan’

국문 초록 (Abstract)

한국잔디 신품종 ’세찬’은 피복력 및 밀도가 우수한 잔디유전자원 JO (Zoysia matrella) 모본과 Z1060 (Z. japonica) 부본간에 인공교배를 수행하였고, 교배후대(F1) 중 생육이 우수하고 밀도가 높은 특성의 JJ317을 선발하였으며, 이를 ’세찬’ 이라 명명하여 품종보호권(품종보호 제232호)을 등록하였다. ’세찬’의 특성은 엽폭는 3.0 mm 중엽 형태이고, 들잔디에비해 엽장은 79.4 mm로 짧은 편이며, 최하위 잎의 높이가 16.8 mm로 낮은 특성을 나타내었다. 줄기개수는 금잔디에 비해 적었지만 들잔디에 비해 약 1.8배가 많아 높은 줄기밀도 특성을 보였다. ’세찬’의 봄철 그린 피복률과 생육속도는 들잔디와 유사하였다. 지상 포복경 마디 두께는 1.63 mm로 들잔디와 유사하였고, 금잔디에 비해 2배가 굵었다. 마모와 토양 답압에 의한 답압스트레스 처리 후 초분광 분석결과 답압에 민감하게 반응한 식생지수 NDVI, EVI, SRI, PSSRa에서높은결과를나타내어’세찬’의답압에대한저항성을확인할수있었다.

다국어 초록 (Multilingual Abstract)

In this study, the new zoysiagrass cultivar ‘Sechan’, was compared with the JO (Zoysia matrella) mother plant, which has rapid greening and shoot density, and the Z1060 (Z. japonica) father plant. Among the F1 hybridization progenies, JJ113 was selected for its high growth speed and high shoot density. This new cultivar was named 'Sechan' and the plant breeders’ rights (Right No. 232) was registered. ‘Sechan’ has a leaf width of 3.0 mm, with a leaf-shaped midrib. The leaf length is shorter than that of Z. japonica at 79.4 mm, and the height of the lowest leaf is 16.8 mm. The turfgrass quality was compared with Z. japonica and Z. matrella, ‘Sechan’ had fewer shoots than Z. matrella, but approximately 1.8 times that of Z. japonica, meaning that it has high density. The spring green cover rate and growth rate of ‘Sechan’ were similar to those of Z.japonica. The thickness of the stolon internode was 1.63 mm, which was similar to that of Z.japonica and twice as thick as that of Z. matrella. After applying traffic stress from wear injury and soil compaction, the hyperspectral analysis showed high NDVI, EVI, SRI, and PSSRa, which confirmed ‘Sechan’ resistance to traffic stress.