Browsing by Author "LOLAS, M"

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    VERTICILLIUM WILT, A LIMITING FACTOR FOR TOBACCO PRODUCTION IN CHILE
    (1989) LATORRE, BA; LOLAS, M; MARHOLZ, G
    A wilt and orange-to-yellow discoloration observed in recent years in burley types of tobacco [Nicotiana tabacum] in Chile was confirmed to be caused by Verticillium dahliae. Disease incidence as high as 25.6% had occurred. Significant yield losses were estimated in nine of 11 selected plots during the 1987-1988 growing seasons. Quality also was significantly affected in diseased versus symptomless cultivar Burley-49 tobacco plants. Isolates of V. dahliae from tobacco were pathogenic to plants of tobacco cultivar Burley-21. However, only mild symptoms occurred in cultivar Coker-86; flue-cured lines V-1 and V-3 appeared to be resistant. All isolates were pathogenic to the susceptible tomato cultivar Earlypak-7, and some isolates caused symptoms on tomato seedlings of the resistant cultivars San Remo, Flora Dade, and Cal-Ace. Lower disease incidence was observed in the latter cultivars. Consequently, isolates from tobacco appeared to be race 1 of V. dahliae.