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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/5295

Title: Damage and reproduction potentials of heterodera avenae on wheat under outdoor conditions
Authors: Al-Hazmi, A.S.
Al-Yahya, F.A.
Abdul-Razig, A.T.
Keywords: Cereal Cyst Nematode
Growth
Heterodera Avenae
Nematode
Pathogenicity
Reproduction
Reproduction
Triticum Aestivum
Wheat
Yield
Plant Protection
Issue Date: 1999
Publisher: Society of Nematologists
Citation: The Journal of Nematology: 31 (4S) ;662-666
Abstract: Two pot experiments, in consecutive years, were conducted under outdoor conditions during the wheat growing season to examine the relationship between increasing initial population densities (Pi: 0-3,000 cysts/pot) of Heterodera avenae and corresponding responses of wheat cv. Yecora Rojo. Results of both experiments were very similar. The nematode suppressed plant height, root and biomass dry weights, and grain yield at all Pi's studied. The suppression of these parameters, as well as the final nematode population densities (Pf), increased with increasing Pi levels. The reproduction factor (Pf/Pi) decreased as Pi increased but was always greater than 1.0. When data from both experiments were combined for regression analyses, inverse relationships were found between log10 (Pi + 1) and both plant growth and yield. These negative relationships were highly significant and adequately described by linear models. Final population (Pf) increased linearly with Pi. The wheat cultivar cv. Yecora Rojo was found to be highly vulnerable to damage and a good host for H. avenae.
URI: http://hdl.handle.net/123456789/5295
Appears in Collections:Faculty of Food and Agriculture Sciences Research Center

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