Identifying Resistance to Ethiopian Russian Wheat Aphid (Diuraphis noxia (Mordvilko)) Populations in Introduced Bread Wheat Genetic Resources

Select Volume / Issue:

• Volume 2, Issue 3, May 2015

Year:

2015

Type of Publication:

Article

Keywords:

Russian Wheat Aphid, Bread Wheat, Ethiopia, Biotypic Diversity

Authors:

Belay, Tesfay

Journal:

IJRAS

Volume:

2

Number:

3

Pages:

132-136

Month:

May

Note:

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. CC BY-NC-SA 4.0 Creative Commons License: https://creativecommons.org/licenses/by-nc-sa/4.0/

Abstract:

Russian wheat aphid (R.W.A.), Diuraphis noxia (Mordvilko), is a major insect pest of wheat and barley in Ethiopia. Yield losses of 67.7% have been reported on irrigated wheat. Bread wheat genetic resources (125) with promise of resistance to R.W.A. in other parts of the world were screened to northern Ethiopian R.W.A. populations in field experiment for two years. Twenty five wheat lines were resistant while 22 had moderate resistance to northern Ethiopian R.W.A. populations. R.W.A. resistant germplasm in other parts of world became susceptible to Ethiopian R.W.A. population. This might indicate biotypic diversity in the R.W.A. populations and might require full-fledged investigation using R.W.A. differentials. The resistant bread wheat germplasm identified from this study can be further tested for agronomic traits or can be used in breeding programs aimed at developing R.W.A. resistant cultivars for irrigated agriculture.

Full text: IJRAS_169_Final.pdf [Bibtex]