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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Crop science 39 (1999), S. 545-551 
    ISSN: 1435-0653
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Poa pratensis L.) subjected to drought. Two-week-old seedlings of Kentucky bluegrass (cv. Plush) were treated with seaweed extract at 326 g ha-1, humic acid (25% active) at 5 L ha-1, alone or in combination, and grown under two soil moisture levels (-0.03 Mpa and -0.5 Mpa) for 5 wk, and subsequently analyzed for antioxidant concentration and growth. The HCP treatments improved leaf water status and enhanced shoot and root growth regardless of soil moisture levels. Water stress induced a significant increase of α-tocopherol, ascorbic acid, and β-carotene content but did not influence superoxide dismutase (SOD) activity. Foliar application of HCP significantly increased α-tocopherol, ascorbic acid, β-carotene content, and SOD activity, especially under low soil moisture (LSM). Positive correlations between antioxidants and antioxidants with growth parameters were observed in Kentucky bluegrass grown under either LSM or high soil moisture (HSM). These data indicate that HCP enhancement of the grass's endogenous antioxidant status may contribute to turfgrass drought tolerance.
    Type of Medium: Electronic Resource
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