Comparison of Germination Characteristics and Daily Seed Germinating Pattern in New Cultivars of The Third Generation of Creeping Bentgrass Grown under Alternative and Natural Room Temperature Conditions

자연실온 및 변온조건에서 제3세대 크리핑 벤트그래스 신품종의 발아특성 및 일일 발아패턴 비교

  • Kim, Kyoung-Nam (Dept. of Horticulture. College of Science and Technology, Sahmyook University) ;
  • Kwon, O-Dal (Dept. of Horticulture, College of Science and Technology, Sahmyook University) ;
  • Shim, Sang-Ryul (Dept. of Environmental Landscape Architecture, College of Science and Engineering, Cheongju University) ;
  • Yoon, Jung-Seo (Dept. of Environmental Landscape Architecture, Graduate School, Dankook University) ;
  • Park, So-Hyang (Dept. of Environmental Horticulture, Graduate School, Sahmyook University)
  • 김경남 (삼육대학교 과학기술대학 원예학과) ;
  • 권오달 (삼육대학교 과학기술대학 원예학과) ;
  • 심상렬 (청주대학교 이공대학 환경조경학과) ;
  • 윤중서 (단국대학교 대학원 환경조경학과) ;
  • 박소향 (삼육대학교 대학원 환경원예학과)
  • Received : 2011.04.19
  • Accepted : 2011.05.11
  • Published : 2011.06.30

Abstract

This study was conducted to investigate early germination characteristics and germination pattern of new cultivars of creeping bentgrass (CB, Agrostis pall/stris Huds.) under natural room temperature conditions and to analyze differences between alternative and natural conditions. Seven cultivars of CB were tested in the study. Daily and cumulative germination patterns were measured and analyzed on a daily basis. Significant differences were observed in germination pattern, days to the first germination, days to 50% germination, days to 85% germination, and germination rate among cultivars under different environments. The first germination in all entries was initiated between 4 and 5 days after seeding (DAS) under alternative conditions, while between 6 and 8 DAS under natural conditions, being 2 to 3 days later as compared with that of alternative conditions. As for the first germination percentage, it was generally 5 to 25% under alternative conditions. However, 'Penn A-1', 'Penncross', and 'Penn A-4' cultivars showed a vigorous germination, producing 50 to 70%. Under natural room temperature conditions, it was 5 to 10% for the most entries, except 'Penncross', 'L-93', and 'Penn A-4' cultivars which vigorously produced 20 to 50%. Days to the 50% germination in CB resulted in 4 to 10 DAS under alternative conditions, while 6 to 15 DAS under natural conditions, being 2 to 5 days later than under alternative conditions. Days to the 85% germination were 5.90 to 11.75 DAS under alternative conditions and 7.95 to 12.50 DAS under natural conditions. 'Penn A-1' and 'L-93' were the fastest cultivars under alternative and natural conditions, respectively. Regardless of the temperature conditions, the longest cultivar in germination was 'T-1', being over 11 DAS. In-depth comparative data on germination characteristics and germination patterns among CB cultivars would be usefully applied for a practical CB turf establishment in golf course construction etc.

본 실험은 자연 실온 환경에서 크리핑 벤트그래스 신품종의 초기 발아특성 및 발아패턴을 조사하고, 그리고 변온 및 자연실은 환경에서의 그 차이점을 비교 분석해서 실무 시공에 응용할 수 있는 기초자료를 파악하고자 시작하였다. 공시재료는 크리핑 벤트그래스 7품종이었으며, 일일 발아패턴 및 누적 발아패턴을 1일 간격으로 조사하였다. 크리핑 벤트그래스 종자의 발아율, 발아패턴 및 발아특성은 온도 조건 및 품종에 따라 차이가 크게 나타났다. 공시 품종 모두 최초 발아는 ISTA 변온환경 에서 치상 후 4-5 일 사이에 시작되었지만, 자연 실온 환경에서는 대부분 품종이 ISTA 변온보다 2~3일 늦은 6~8일 사이에 시작되었다. 최초 발아 시 발아율은 ISTA 변온에서 일반적으로 5~25% 정도였고, 'Penn A-1', 'Penncross' 및 'Penn A-4' 품종의 최초 발아율은 50~70% 정도로 초기 발아가 대단히 왕성하였다. 하지만 자연 실온 환경에서 최초 발아율은 일반적으로 5~10% 정도였으며, 'Penncross', 'L-93' 및 'Penn A-4' 품종은 20~50% 정도로 초기 발아 특성이 대단히 왕성하였다. 크리핑 벤트그래스에서 발아율 50% 도달 기간은 ISTA 변온에서는 치상 후 4~10일 사이에 나타났고, 자연 실온에서는 품종에 따라 ISTA 변온보다 2~5일 정도 늦은 치상 후 6~15일 사이에 나타났다. 발아율 85% 도달 기간은 ISTA 변온에서는 치상 후 5.90~11.75일 사이였으며, 가장 빠른 종류는 'Penn A-1' 품종이었다. 하지만 자연 실온에서는 ISTA 변온보다 다소 늦은 치상 후 7.95~12.50일 사이였고, 가장 빠른 종류는 'L-93' 품종이었다. 그리고 온도 조건에 관계없이 기준 발아율 도달 기간이 가장 느린 품종은 ISTA 변온 및 자연 실온에서 각각 11.75일 및 12.50일로 나타난 'T-1' 품종이었다. 본 실험 결과 나타난 이러한 발아특성 비교 데이터는 골프장 등 잔디밭 조성 시 실무적인 기초 자료로 유용하게 활용될 수 있을 것이다.

Keywords

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