Journal of Japanese Society of Turfgrass Science
Online ISSN : 1884-4022
Print ISSN : 0285-8800
ISSN-L : 0285-8800
Volume 36, Issue 2
Displaying 1-12 of 12 articles from this issue
  • Kentaro Iijima
    2008 Volume 36 Issue 2 Pages 83-88
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • Waichi AGATA, Yasuhiro TAKEUCHI, Noriaki AOKI, Hiroyuki YAMAJI, Yukito ...
    2008 Volume 36 Issue 2 Pages 89-94
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
    In order to clarify the climatic factors which influence on anthocyanin spot formation, 18 greens of creeping bentgrass at Fukuoka Country Club (Fukuoka City) was observed monthly over winter. The spot formation was also observed to know varietal difference in nursery of some cultivars at Wakamatsu Golf Club (Kitakyushu City) . As an indicator of anthocyanin spot formation, anthocyanin index was used in this investigation. The index was calculated from coverage and color intensity (tone) of anthocyanin spot formed in green. The first appearance of anthocyanin spot in Fukuoka area was the middle ten days of December. Anthocyanin index increased from December to February, and then it decreased for March. From analysis of climatic factors in Fukuoka, it was made clear that about 10°C of daily mean air temperature is a turning point of appearance and vanishment of anthocyanin spot in bentgrass green. Anthocyanin spot formation was more remarkable in sodding than seeding establishment. Also it became remarkable in third year in the former and fourth year in the latter after green establishment. Anthocyanin index of new bentgrass cultivars bred in 1987 and 1988 was lesser than of penncross cultivar bred in 1954 under the same green established and cultivated conditions.
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  • Yasuhiro TAKEUCHI, Waichi AGATA, Yukito KAWANABE, Hiroyuki YAMAJI, Yas ...
    2008 Volume 36 Issue 2 Pages 95-99
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
    This study was carried out to examine the growth characteristics of anthocyanin accumulative and non-accumulative strains which were separated from creeping bentgrass (Agrostis stolonifera L.) cultivar “Penncross”. Both strains were selected from Penncross green of 6 years after establishment and propagated in nursery greens. To compare growth characteristics of these strains, plants were grown in field and pot conditions. Growth of anthocyanin accumulative strain was low in winter and vigorous toward summer. While, anthocyanin non-accumulative strain had lower growth rate than anthocyanin accumulative strain in summer. Anthocyanin accumulative strain grown at vinyl house (mean 18°C) in winter did not show anthocyanin color (purple) . However, this strain cultivated under outdoor condition (mean 10°C) accumulated anthocyanin pigment in plant tissues. These results suggest that the accumulation correlates closely to low air temperature. Both strains grown in nursery green had rhizoctonia brown patch disease in summer of 1998 and 1999. However, the extent of disease injury was larger in anthocyanin non-accumulative strain than that of anthocyanin accumulative strain. Anthocyanin non-accumulative strain contained more TNC, sugar and lesser starch than anthocyanin accumulative strain in winter. While, the latter strain had more starch in summer than the former. These results suggest that growth of penncross cultivar in winter is supported by anthocyanin non-accumulative strain, and that the heat tolerance and disease resistance in summer are supported by anthocyanin accumulative strain.
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  • Hiroyuki KASHIWABARA, Masayuki OYAMADA, Yasuhiro SUGIMOTO
    2008 Volume 36 Issue 2 Pages 100-104
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
    We tried to evaluate the differences in the early growth rate and soil conservation ability between four lines of Japanese lawngrass (Okinawa, Toi cape, Aso and, Jambo) and two cultivars of centipedegrass (TifBlair and Common) . Both kinds of grasses were grown for one month and then transplanted in a pasture. Following the transplantation, in the first measurement (45 days after transplantation), of the survival rates of both the grasses were high in the range 76.3-92.2%, which were considered high. However, during the second measurement (97 days after transplantation), survival rates of the Japanese lawngrasses and the centipedegrasses were in the range 42.8-59.5% and 84.5-92.8%, respectively. Thus, the survival rates of the centipedegrasses were higher than those of the Japanese lawngrasses. For coverage 530 days after transplantation, Aso line was the highest among the Japanese lawngrasses, and was also higher than both the cultivars of centipedegrasses that had the same coverage. For water permeability and infiltration capacity, all the lines of Japanese lawngrasses showed high values than the centipedegrasses. In conclusion, we believe that Japanese lawngrass have greater ability to increase soil permeability towards water.
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  • Kojiro SUZUKI, Minako IDE, Yukie NAKAMURA
    2008 Volume 36 Issue 2 Pages 105-108
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
    We carried out a morphological investigation into why the Ophiopogon japonicus plant grows under water. Our stereoscopic observations revealed the presence of aerenchymas in Ophiopogon japonicus roots. The oxygen-saturation content rate in the water in which Ophiopogon japonicus plants were placed showed increased level under both light and dark conditions, and root only or both shoot and root were submerged. The root structure of Ophiopogon japonicus plants to be morphologically adapted to contain aerenchymas, which are able to transfer oxygen from shoot to root.
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  • Shigeto Hayashi
    2008 Volume 36 Issue 2 Pages 109-111
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • Masahisa Nakazawa
    2008 Volume 36 Issue 2 Pages 112-115
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • Mikio Sasage
    2008 Volume 36 Issue 2 Pages 116-120
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    2008 Volume 36 Issue 2 Pages 121-123
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    2008 Volume 36 Issue 2 Pages 124-125
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    2008 Volume 36 Issue 2 Pages 126-132
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    2008 Volume 36 Issue 2 Pages 133-135
    Published: March 31, 2008
    Released on J-STAGE: June 08, 2010
    JOURNAL FREE ACCESS
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