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Biochemistry of Russian wheat aphid resistance in wheat: involvement of lipid-like products
(University of the Free State, 2007-11-03)
Physical damage and disease are known to cause changes in the lipid composition of plants. The biochemical pathways that lead to changes in the lipid composition were investigated in a comparative study using Russian wheat ...
Characterization of some early defence responses of leaf rust-infected wheat
(University of the Free State, 2007)
The aim of this study was to investigate the early events following the infection of wheat with leaf rust. An attempt was made to identify and characterize genes putatively involved in these early events. More specifically, ...
Cloning of genes involved in the early response of wheat towards Russian wheat aphid infestation
(University of the Free State, 2004)
English: The interaction between wheat (Triticum aestivum) and the Russian
wheat aphid (Diuraphis noxia) was investigated on a molecular level. The
resistant cultivar, Tugela DN1, was infested with the Russian wheat ...
The influence of environment on the expression of Russian wheat aphid; Diuraphis noxia (Kurdjumov) resistance
(University of the Free State, 2008-05)
English: The purpose of this study was to investigate the effect of variations in climatic factors such as vernalization periods, minimum- and maximum temperatures and rainfall on the expression of host plant resistance ...
Metabolic aspects of the early response of leaf rust-infected wheat
(University of the Free State, 2008)
English: The aim of this study was to study various aspects of the defence response of wheat infected by Puccinia triticina. SSH was used to isolate differentially expressed cDNA fragments from P. triticina infected wheat. ...
Targeting quantitative trait loci for adult plant stripe rust resistance in wheat
(University of the Free State, 2007-11)
English: Stripe rust, caused by Puccinia striiformis West. f. sp. tritici is one of the most damaging
diseases of wheat (Triticum aestivum L.) globally. The South African wheat cultivar Kariega
expresses APR and has ...
Genetic variability for Russian wheat aphid, Diuraphis noxia resistance in South African wheat genotypes
(University of the Free State, 2006-07)
Near-isogenic genotypes 1684/Tugela and 2199/Tugela containing D. noxia resistance ex SA1684 [PI 137739 (Dn1)] and SA 2199 [PI 262660 (Dn2)] were studied in terms of antibiosis, antixenosis and tolerance, population ...
Aspects of ß-1,3-glucanase expression in wheat associated with Russian wheat aphid resistance
(University of the Free State, 2003-11)
The aim of the study was to learn more about the expression of b-1,3-glucanase during the resistance response of wheat to the RWA (Diuraphis noxia)(Mordvilko). The different resistance genes (Dn1, Dn2 and Dn5) used in the ...
Molecular markers for and quality assessment of near isogenic palmiet and SST66 wheat lines for Pmeudocercosporella herpotrichoides (eyespot) resistance
(University of the Free State, 2000-11)
English: 1. The aim of this study was to determine whether the presence of the Pch 1
gene, has an effect on breadmaking quality and yield in two genetic
backgrounds, to find a molecular marker linked to the gene, using ...
Isolation and characterization of a possible polygalacturonase: inhibiting protein from wheat
(University of the Free State, 2001)
English: The presence and possible role of polygalacturonase-inhibiting protein (PGIP) in
wheat (Triticum aestivum) as part of the plant's defense reaction following leaf rust
(Puccinia triticina) infection were ...