2015 BGRI Poster Abstracts

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Displaying 21 - 30 of 415

Utilization of Jordanian durum wheat (Triticum turgidum ssp durum) landraces for crop improvement in dry areas

Durum wheat (Triticum turgidum subsp. durum) landraces are rapidly disappearing from the main wheat production areas in the Fertile Crescent. Such local landraces are most likely contain geographically specific, ectopically adapted alleles or gene complexes for their harsh environments. A panel of 156 durum wheat landraces and released varieties were assembled from historical collections deposited in national and international gene banks and from a recent active collection mission from...Read complete abstract

Primary Author: Al-Abdallat, Faculty of Agriculture, The University of Jordan

Keywords: drought, QTL

Genetic variation in Puccinia striiformis f.sp. tritici populations on wheat in Iraq

This study was conducted to detect new races of Puccinia striiformis f. sp. tritici in Iraq. Trap nurseries were planted in different locations throughout the main wheat growing areas. Stripe rust severities and infection types on each genotype were recorded at different stages of crop development. Yellow rust samples collected from commercial wheat fields at different locations were sent to the Global Rust Center for race analysis. Local adult plant tests indicated...Read complete abstract

Primary Author: Al-Maaroof, Sulaimani University, Iraq

Keywords: Iraq, genetics, stripe rust

High yielding bread wheat cultivar Alaa with potential to retard rust spread in rain-fed and irrigated zones of Iraq

Rusts continue to cause significant losses in grain yield of wheat in Iraq. Substitution of susceptible cultivars with resistant ones is an important step in reducing the vulnerability of the wheat crop. The present study represents a breeding program to develop high yielding bread wheat cultivars with resistance to brown rust and yellow rust. The performance of 265 spring wheat genotypes representing an international bread wheat-screening nursery from CIMMYT were evaluated in different agro...Read complete abstract

Primary Author: Al-Maaroof, Sulaimani University,IKR, Iraq

Keywords: rusts, Iraq

Survey of wheat stem rust Puccinia graminis f. sp. tritici in Jordan

Studies on whet stem rust (WSR) in Jordan are considered to be old. There was only one study conducted in the late 1980's by Abu-Blan and Duwayri (1989) to evaluate the infection of wheat cultivars with black stem rust disease (Puccinia graminis f. sp. tritici). Recently, reports of stem rust were published in Israel and Lebanon in 2010 and first report of Ug99 was reported in Egypt in 2014. The objectives of our research are to: (i) survey wheat growing areas for WSR in Jordan during...Read complete abstract

Primary Author: Alananbeh, The University of Jordan


Genetic protection of wheat from rusts and development of resistant varieties in Russia and Ukraine

Leaf rust represents the major threat to wheat production in Russia and Ukraine. It has been present for many years and epidemics occur in different regions on both winter and spring wheat. In some regions there is evidence of more frequent epidemics, probably due to higher precipitation as a result of climate change. There is evidence that the virulence of the leaf rust population in Ukraine and European Russia and on winter wheat and spring wheat is similar. The pathogen population...Read complete abstract

Primary Author: Alexey Morgounov, CIMMYT-Turkey


Diversity of Puccinia spp. on wheat, grasses and Berberis spp. in the Himalayan center of diversity of Puccinia striiformis f. sp. tritici

The Himalayan and near Himalayan region of Pakistan, China and Nepal was recently identified as the center of diversity of Pst. The Pakistani Himalayan populations were shown to be recombinant and possibly maintained through sexual reproduction on the alternate host, Berberis spp. To examine the role of Berberis spp. in supporting Puccinia spp. in the Himalayan region of Pakistan, 274 pycnial/aecial-infected Berberis leaves and 16 grass samples...Read complete abstract

Primary Author: Ali, The University of Agriculture, Peshawar, Pakistan

Keywords: stripe rust, barberry, Nepal

Wheat rusts status and population structure across Pakistan during wheat growing seasons 2015-16 and 2016-17

Considering the importance of wheat rust diseases in Pakistan and the recent identification of yellow rust pathogen (Puccinia striiformis f. sp. tritici) centre of diversity in Pakistan, the present study was designed to assess the status of three wheat rusts across the country during 2015-16 and 2016-17 and analyze the population structure of P. striiformis f. sp. tritici . A total of 451 fields (from 68 districts) were surveyed during 2016 and 480 fields (from 69 districts) during 2017. A...Read complete abstract

Primary Author: Ali, The University of Agriculture, Peshawar, Pakistan


Comparative analysis of rust resistant and susceptible wheat varieties in Pakistan

To reduce losses caused by rusts, regular and timely replacement of susceptible varieties with new high yielding, rust resistant varieties must occur. Data from a farmer survey carried out across Pakistan (Punjab, Sindh, KPK and Baluchistan) in 2014 enabled an analysis of the uptake of rust resistant variety NARC 2011. The empirical results indicated that the major sources of information that farmers obtained about NARC 2011 were research stations (83%), seed companies (7%) and fellow...Read complete abstract

Primary Author: Ali, International Maize and Wheat Improvement Center (CIMMYT) Pakistan Office

Keywords: Pakistan, varieties, ug99

Assessment of slow rusting of landraces of bread wheat to Puccinia striiformis f.sp. tritici under artificial field inoculation

Yellow rust caused by Puccinia striiformis f.sp. tritici, is the most devastating fungal disease of wheat, especially in CWANA region. Growing cultivars with durable resistance is the most economical control measure. A field study was conducted to evaluate 500 bread wheat landraces along with the susceptible control ?Morocco? using artificial inoculation under field conditions at Tel Hadia, Syria during 2010-11 and 2011-12 growing seasons. The most prevailing yellow rust virulent race 70E214...Read complete abstract

Primary Author: Alo, ICARDA

Keywords: bread wheat

SNP discovery and genotyping of wheat-Dasypyrum villosum disomic addition lines by genotyping-by-sequencing (GBS) to facilitate identification and introgression of novel stem rust resistance genes

Most accessions of Dasypyrum villosum (2n = 2x = 14), a tertiary gene pool of wheat, were resistant in previous tests with a collection of Pgt races, including TTKSK. In order to transfer novel resistance genes with minimum linkage drag into wheat, chromosome-specific markers linked to the resistance loci would be useful. However, the currently available SNP and sequence information for D. villosum is very limited. Hence, developing SNP markers and genotyping D. villosum will aid in...Read complete abstract

Primary Author: Ando, Department of Crop and Soil Sciences, Washington State University, USA

Keywords: stem rust, resistance SNP, genotyping