Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 412690
Title Bladrandjes en Ca bij tomaat: Fysiologische achtergronden van cel- en weefselstevigheid in relatie tot het ontstaan van bladrandjes en infectie met Botrytis cinerea L.
Author(s) IJdo, M.L.; Janse, J.; Hofland-Zijlstra, J.D.; Voogt, W.
Source Bleiswijk : Wageningen UR Glastuinbouw (Rapporten GTB 1116) - 48
Department(s) WUR GTB Gewasfysiologie Management en Model
WUR GTB Teelt & Bedrijfssystemen
WUR GTB Gewasgezondheid
Publication type Research report
Publication year 2011
Keyword(s) solanum lycopersicum - botrytis cinerea - bladeren - symptomen - calcium - gebreksziekten - glastuinbouw - leaves - symptoms - deficiency diseases - greenhouse horticulture
Categories Symptoms of plant pests, diseases and disorders
Abstract Tip burn of tomato leaves is often seen by growers as indication for maximum crop performance, however grey mould (botrytis), can easily infect through the necrotic leaf edges. In this desk study factors that are influencing the occurrence of tip burn and calcium (Ca) deficiency were studied. Cells formed during periods of Ca shortage have weaker membranes and walls and ‘burst’ after a climatic shock resulting in plasmolysis and disintegration of the membranes. Possibly the disruption of the Ca homeostasis in the cytoplasm. Botrytis uses dead tissue as an entrance to infect the plant. The weak cell walls and solute leaking caused by disruption of the membranes facilitates the infection process of the fungus. Ca uptake and transport are affected by high fruit load, EC and K/Ca in the root environment and transpiration and root pressure. These factors sometimes interact and sometimes are independently effective, resulting in a complex situation. Thus preventing heavy fruit loads in susceptible periods and stimulating Ca uptake and distribution will alleviate the problem. This, in combination with the prevention of climate shocks will help to reduce the occurrence of tip burn in tomato.
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