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        Effects of water potential and temperature on the development of eyespot lesions in wheat

        Author
        Higgins, S.
        Fitt, Bruce D.L.
        Attention
        2299/11115
        Abstract
        Growth of Pseudocercosporella herpotrichoides on potato dextrose agar at water potentials from -0.5 to -6.9 MPa was optimal at 20°C. At 12 and 20°C, six isolates of P. herpotrichoides grew more rapidly at -0.5 to -2 MPa than at -6.9 MPa. Wheat plants inoculated with P. herpotrichoides and grown in columns of soil at either 15 or 20°C developed more severe eyespot lesions under a heavy watering regime than under medium or light watering regimes. P. herpotrichoides penetrated leaf sheaths of inoculated plants grown in compost more rapidly at 10°C night/15°C day temperatures than at 5/10°C; death of leaf sheaths was also more rapid and consequently there were fewer living infected leaf sheaths at 10/15°C than at 5/10°C. Irrigating for 5 wk before harvest increased the severity of eyespot lesions in a 1983 wheat crop.
        Publication date
        1985-08
        Published in
        Annals of Applied Biology
        Published version
        https://doi.org/10.1111/j.1744-7348.1985.tb01541.x
        Other links
        http://hdl.handle.net/2299/11115
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