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Evolution of Physiologic Races and Virulence of Puccinia striiformis on Wheat in Syria and Lebanon
Virulence–avirulence phenotypes of Puccinia striiformis isolates collected in Lebanon and
Syria were determined on seedlings of the wheat–yellow rust differential genotypes. We found
25 and 11 physiologic races over 6 years ...
Characterization of seedling infection types and adult plant infection responses of monogenic Sr gene lines to race TTKS of Puccinia graminis f. sp tritici
Stem rust, caused by Puccinia graminis f. sp. tritici, historically was one of the most destructive diseases of wheat and barley. The disease has been under effective control worldwide through the widespread use of host ...
Assessing the sustainability of wheat-based cropping systems using APSIM: model parameterisation and evaluation
Assessing the sustainability of crop and soil management practices in wheat-based rotations requires a well-tested model with the demonstrated ability to sensibly predict crop productivity and changes in the soil resource. ...
Genotypic interaction between resistance genes in wheat and virulence genes in the Hessian fly Mayetiola destructor (Diptera: Cecidomyiidae)
The genotypic interaction between wheat resistance genes H3, H6, H7H8, H9 and virulence genes vH3, vH6, vH7vH8, vH9 of Hessian fly, Mayetiola destructor (Say), was studied in a growth chamber. Results showed plants homozygous ...
In-season wheat root growth and soil water extraction in the Mediterranean environment of northern Syria
Wheat is the most important cereal crop in the semi-arid eastern Mediterranean region that includes northern Syria. Knowledge of wheat root depth and the vertical distribution during the winter growing season is needed for ...
Caravan 24: Review of agriculture in the dry areas
Articles in this issue describe how value-addition options were identified for herbal and medicinal plants in a remote valley in Morocco; how cactus species – that combine hardiness with high market value – are being ...
The Identification of Two New Races of Pyrenophora tritici-repentis from the Host Center of Diversity Confirms a One-to-One Relationship in Tan Spot of Wheat
Pyrenophora tritici-repentis, causal agent of tan spot, induces necrosis and chlorosis in its wheat host. The tan spot system conforms to the toxin model and three host-specific toxins have been identified (Ptr ToxA, Ptr ...
Water-use efficiency of wheat-based rotation systems in a Mediterranean environment
Crop production in Mediterranean- type environments is invariably limited by low and erratic rainfall (200-600 mm year(-1)), and thus soil moisture, and by high evapotranspiration resulting from high temperature. Consequently, ...
ICARDA Annual Report 2007
In 2007, ICARDA celebrated its thirtieth anniversary. The Center and its partners have worked together for three decades to improve the food security and livelihoods of the poor in dry and marginal areas. During this time, ...