Y. Canihos, EFFECT OF HERBICIDES ON VERTICILLIUM WILT OF COTTON AND INDUCTION OF PHYTOALEXIN GOSSYPOL PRODUCTION BY HOST-CELLS, Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, 104(5), 1997, pp. 516-522
Pretreatment of cotton seeds with tested herbicides markedly increased
resistance of cotton plants to Verticillium wilt caused by Verticilli
um dahliae. The present investigation studied the effect of three herb
icides tested on mycelial growth of V. dahliae and induction of gossyp
ol synthesis of cotton cells. All herbicides selected had inhibitory e
ffect on the mycelial growth of the pathogen particularly at high conc
entrations. Prometryn caused a great reduction in the appearance of Ve
rticillium wilt disease and was the most effective in controlling the
disease. Maximum amounts of gossypol production were also observed in
roots and stems of prometryn-treated plants. Protection of gossypol wa
s greater in treated and V. dahliae-inoculated than in treated and uni
noculated plants.