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Differences in susceptibility to leaf spot caused by bipolaris sorokiniana among strains of poa annua

, : Differences in susceptibility to leaf spot caused by bipolaris sorokiniana among strains of poa annua. Canadian Journal of Plant Science 59(4): 1113-1116

Twenty clones of P. annua L. (annual bluegrass) were tested for susceptibility to B. sorokiniana (Sacc. in Sorok.) Shoem. isolated from diseased turf at Ottawa, Ontario [Canada]. Variation from highly resistant to very susceptible was found among these strains. Six of the 20 exhibited much greater resistance to the disease than did 4 cultivars of P. pratensis L. and 4 of bentgrass (Agrostis spp.). In the eastern Ontario and western Quebec areas at least, B. sorokiniana infection apparently plays a definite role in the frequent dying out of P. annua in July and Aug.

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Accession: 005151019

DOI: 10.4141/cjps79-172

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