Potential of Synthetic Hexapod Wheat for Stripe Rust Resistance in Ethiopia
Journal Title: Open Access Journal of Agricultural Research - Year 2018, Vol 3, Issue 4
Abstract
Stripe rust caused by Puccinia striiformis f.sp. tritici is one of the major constraints of wheat production worldwide. The most recent epidemics was occurred in 2010 in major wheat growing regions of central, west Asia, north and subSaharan Africa causing significant yield losses because of breakdown of resistance in predominantly cultivated wheat varieties (e.g. Kubsa/Attila and Galama in Ethiopia and Cham-8 in Syria). The major cause might be the narrow genetic base on which the breeding for resistance has been founded. Many control measures have been used to minimize the losses incurred by yellow rust but use of resistant cultivars remains the most economical, efficient and environment and farmer friendly strategy. To broaden the genetic basis of wheat cultivars, it is important to collect, evaluate and document new source of resistance genes from wild relatives of wheat including Triticum and Aegilops species. Synthetic hexaploid wheat (SHW) is a valuable genetic resource for resistance to a range of biotic stresses. A total of 653 SHWs derived from Aegilops tauschii and Triticum turgidum subsp. durum were evaluated for resistance to yellow rust in Meraro and Kulumsa, Ethiopia, at the adult plant growth stage. Of these, 644 entries were further tested on wheat cultivars carrying Yr2, Yr6, Yr7, Yr9, YrA, Yr25 and Yr27 against stripe rust isolates virulent on these genes at the seedling growth stage of 116 exhibited resistant to moderately resistant reaction under field conditions in both locations. Of these, 40 and 76 SHWs showed susceptible and resistant reactions at the seedling stage, respectively. The resistant SHWs identified could be useful in broadening the genetic bases of stripe resistance and further characterized to uncover potentially new resistance gene(s) in SHWs effective against prevalent races currently attacking wheat in Ethiopia and other stripe rust countries in the region
Authors and Affiliations
Zegeye H*, Tadesse Z, Asnake D and Kassa D
Keywords
Related Articles
- EP ID EP755120
- DOI 10.23880/oajar-16000170
- Views 33
- Downloads 0
Compost and Zinc Application Enhanced Production of Sweet Potatoes in Sandy Soil
Composting releases nutrients in the less fertile soil to increase soil health for sustainable production of a crop. To investigate the effects of compost-and zinc (Zn)- induced growth and development of sweet potato,...
Exogenous Application of Bio-Regulators for Alleviation of Heat Stress in Seedlings of Maize
High temperature is an important environmental stress that influences the growth and development of crop plants thus adversely affecting their production and productivity. An experiment was carried out to investigate th...
Turmeric (Curcuma Longa L): An Unpopular Industrial Crop for Sustainable Agriculture
There is a dearth of information in Nigeria on turmeric as an industrial crop with the potential of creating a wide range of employment opportunities due to its overwhelming benefits. Turmeric contains an orange pigment...
The Functional State of Animals Blood under the Electromagnetic Radiation Influence at Millimeter Range
The electromagnetic EHF field at frequencies of molecular absorption atmospheric oxygen spectrum in vitro that effects on the functional activity of animals’ blood was first studied. The change in the number of erythroc...
Pesticides Exposure in Relevance to Cancer Risk
Pesticides are widely used throughout the world because of their benefits to maintain high agricultural products quality and quantity. There is growing epidemiological evidence that exposure of humans to pesticides corr...