EFFECTS OF HOST VARIETY, PHOTOPERIOD AND CHEMICAL TREATMENTS ON HATCHING OF GLOBODERA-ROSTOCHIENSIS

  • 1 January 1982
    • journal article
    • research article
    • Vol. 14  (2) , 203-207
Abstract
Golden nematode cysts were collected after they had completed one generation on an early, a mid-season, or a late-maturing potato [Solanum tuberosum] variety (''Superior'', ''Katahdin'' and ''Sebago'', respectively). The plants were grown in 8.5- or 16-h photoperiods and treated with GA or xylocaine or both. When treated subsequently with potato root-diffusate few (13.3%) juveniles hatched from cysts collected from Sebago, more (22.3%) from cysts collected from Katahdin and most (36.0%) from cysts collected from Superior. Hatching was greater from cysts collected from plants treated with GA than from untreated plants. Short photoperiods decreased hatching from cysts collected from Katahdin but increased hatching from cysts collected from Superior and Sebago. GA had no detectable effect on hatching, but EDTA has some.