Co-Authors:
Orion, D., Division of Nematology, The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Minz, G., Division of Nematology, The Volcani Institute of Agricultural Research, Bet Dagan, Israel
Abstract:
The effect of methyl-2-chloro-9-hydroxyfluorene-(9)-carboxylate (morphactin), a plant antimitotic agent, was studied on tomato seedlings infected with Meloidogyne javazzica. Morphactin suppressed giant cell formation and consequently reduced the rate of nematode development. Sex reversal occurred, and the percentage of males in the population increased up to 60%. The activity of morphactin was most conspicuous during the early stages of gall formation. Gall parenchymal tissue differentiated to vascular cells, resulting in abnormal distorted female adults, and the host plant exhibited distorted apices, retarded growth and strong epinasty. The substance did not significantly suppress the population of the saprozoic nematode, Panagrellus redivivus. © 1971 BRILL.