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Titre du document / Document title

The use of the area under the disease-progress curve (AUDPC) to assess quantitative disease resistance in crop cultivars

Auteur(s) / Author(s)

JEGER M. J. (1) ; VILJANEN-ROLLINSON S. L. H. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Agriculture and Horticulture, Wye College, University of London, Wye, Ashford, Kent, TN25 5AH, ROYAUME-UNI
(2) New Zealand Institute for Crop and Food Research Ltd, Private Bag 4704, Christchurch, NOUVELLE-ZELANDE

Résumé / Abstract

Calculation of the area under the disease-progress curve (AUDPC) as a measure of quantitative disease resistance entails repeated disease assessments. For typical sigmoid disease-progress curves, repeated assessments may be unnecessary. A mathematical procedure is derived for estimating the AUDPC from two data points. A field trial with ten cultivars with and without the gene Yrl8 for resistance to stripe rust were inoculated with two pathotypes of Puccinia striiformis (from the cultivars Karamu and Oroua) and assessed for the percentage leaf area infected seven or eight times during the growing season. The AUDPCs were calculated directly from data and estimated from the described equation. Calculated values were plotted and ranked against estimated values, and excellent correspondence was obtained (Spearman's Rank Correlation in the Karamu trial= 0.9879 and the Oroua trial=0.9515). Therefore, an estimation of the AUDPC from two data points provides an equivalent amount of information as from repeated assessments.

Revue / Journal Title

Theoretical and applied genetics    ISSN  0040-5752   CODEN THAGA6 

Source / Source

2001, vol. 102, no1, pp. 32-40 (36 ref.)

Langue / Language

Anglais

Editeur / Publisher

Springer, Heidelberg, ALLEMAGNE  (1968) (Revue)

Mots-clés anglais / English Keywords

Cultivar

;

Sensitivity resistance

;

Quantitative character

;

Puccinia striiformis

;

Fungus resistance

;

Leaf area

;

Mathematical model

;

Triticum aestivum

;

Cereal crop

;

Basidiomycetes

;

Fungi

;

Thallophyta

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Plant pathogen

;

Mots-clés français / French Keywords

Cultivar

;

Sensibilité résistance

;

Caractère quantitatif

;

Puccinia striiformis

;

Résistance champignon

;

Surface foliaire

;

Modèle mathématique

;

Triticum aestivum

;

Plante céréalière

;

Basidiomycetes

;

Fungi

;

Thallophyta

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Phytopathogène

;

Mots-clés espagnols / Spanish Keywords

Cultivar

;

Sensibilidad resistencia

;

Carácter cuantitativo

;

Puccinia striiformis

;

Resistencia a los hongos

;

Superficie foliar

;

Modelo matemático

;

Triticum aestivum

;

Planta cerealista

;

Basidiomycetes

;

Fungi

;

Thallophyta

;

Gramineae

;

Monocotyledones

;

Angiospermae

;

Spermatophyta

;

Fitopatógeno

;

Localisation / Location

INIST-CNRS, Cote INIST : 395, 35400009485104.0040

Nº notice refdoc (ud4) : 898634



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