Biotypic variation in Russian wheat aphid (Diuraphis noxia Kurdjumov Homoptera: Aphididae) between Hungary and South Africa

2002 ◽  
Vol 30 (1-2) ◽  
pp. 133-139 ◽  
Author(s):  
Z. Basky
Keyword(s):  
South Africa ◽  
Russian Wheat Aphid ◽  
Diuraphis Noxia

scholarly journals Genome-wide association analysis of Russian wheat aphid (Diuraphis noxia) resistance in Dn4 derived wheat lines evaluated in South Africa

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0244455
Author(s):  
Lavinia Kisten ◽  
Vicki L. Tolmay ◽  
Isack Mathew ◽  
Scott L. Sydenham ◽  
Eduard Venter
Keyword(s):  
South Africa ◽  
South African ◽  
The United States ◽  
Russian Wheat Aphid ◽  
Diuraphis Noxia ◽  
Genome Wide Association ◽  
Complex Genetics ◽  
Genome Wide ◽  
A Genome ◽  
Wheat Lines

Russian wheat aphid (RWA; Diuraphis noxia Kurdjumov) resistance on the 1D chromosome of wheat has been the subject of intensive research. Conversely, the deployment of the Dn4 derived RWA resistant varieties diminished in recent years due to the overcoming of the resistance it imparts in the United States of America. However, this resistance has not been deployed in South Africa despite reports that Dn4 containing genotypes exhibited varying levels of resistance against the South African RWA biotypes. It is possible that there may be certain genetic differences within breeding lines or cultivars that influence the expression of resistance. The aim of this study was to identify single nucleotide polymorphism (SNP) markers associated with resistance to South African RWA biotypes. A panel of thirty-two wheat lines were phenotyped for RWA resistance using four South African RWA biotypes and a total of 181 samples were genotyped using the Illumina 9K SNP wheat chip. A genome wide association study using 7598 polymorphic SNPs showed that the population was clustered into two distinct subpopulations. Twenty-seven marker trait associations (MTA) were identified with an average linkage disequilibrium of 0.38 at 10 Mbp. Four of these markers were highly significant and three correlated with previously reported quantitative trait loci linked to RWA resistance in wheat. Twenty putative genes were annotated using the IWGSC RefSeq, three of which are linked to plant defence responses. This study identified novel chromosomal regions that contribute to RWA resistance and contributes to unravelling the complex genetics that control RWA resistance in wheat.

Diuraphis noxia (Kurdjumov), Russian wheat aphid (Homoptera: Aphididae).

2009 ◽  
pp. 110-114
Author(s):  
O. O. Olfert ◽  
J. F. Doane ◽  
K. Carl ◽  
M. A. Erlandson ◽  
M. S. Goettel
Keyword(s):  
Russian Wheat Aphid ◽  
Diuraphis Noxia

Biotypic and Genetic Variation Within Tropical Populations of Russian Wheat Aphid, Diuraphis noxia (Kurdjumov) (Homoptera: Aphididae) in Kenya

2007 ◽  
Vol 4 (5) ◽  
pp. 350-361 ◽  
Author(s):  
J.N. Malinga ◽  
M.G. Kinyua . ◽  
A.W. Kamau . ◽  
J.K. Wanjama . ◽  
J.O. Awalla . ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Russian Wheat Aphid ◽  
Diuraphis Noxia
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