אסיף מאגר המחקר החקלאי

Effect of plant growth regulators on white mould (Sclerotinia sclerotiorum) on bean and cucumber

Year:

2002

Source of publication :

Authors :

Volume :

150

Co-Authors:

Al-Masri, M.I., College of Agriculture, Hebron University, Hebron, Palestine, College of Agriculture, Hebron University, P.O. Box 40, Hebron, Palestine
Ali-Shtayeh, M.S., College of Agriculture, Hebron University, Hebron, Palestine, College of Science, An-Najah National University, Nablus, Palestine
Elad, Y., College of Agriculture, Hebron University, Hebron, Palestine, Department of Plant Biology, ARO, Volcani Center, Bet dagan 50250, Israel
Sharon, A., College of Agriculture, Hebron University, Hebron, Palestine, Department of Plant Sciences, Tel Aviv University, Tel Aviv 69978, Israel
Tudzynski, P., College of Agriculture, Hebron University, Hebron, Palestine, Institut für Botanik, Westf. Wilhelms Universität, D-48149 Münster, Germany
Barakat, R., College of Agriculture, Hebron University, Hebron, Palestine, College of Agriculture, Hebron University, P.O. Box 40, Hebron, Palestine

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Abstract:

The effect of plant growth regulators on the pathogenic fungus Sclerotinia sclerotiorum (white mould) was investigated under in vitro and in vivo conditions. Naphthalene acetic acid inhibits the fungus in vitro and in vivo. It reduced white mould disease severity on bean and cucumber plants at concentrations of 200-400 μg/ml. Gibberellic acid (GA3) promoted both mycelium and white mould disease severity on plants at concentrations of 50-250 μg/ml. Methyl jasmonate (MeJa), and abscisic acid (ABA) decreased mycelium growth of S. sclerotiorum in vitro. MeJa decreased bean and cucumber white mould disease at concentrations of 75-250 μg/ml.ABA increased disease development on bean and cucumber plants at concentrations of 100-300 μg/ml.

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