2015 BGRI Poster Abstracts

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Displaying 41 - 50 of 415

Research for development (R4D) approaches to minimize the threat of new Pgt races to wheat production in Ethiopia

Recurrent outbreaks of rusts debilitated mega wheat varieties in major production areas in Ethiopia. Projects to accelerate seed multiplication of rust resistant varieties funded by USAID, BMGF and others contributed to the replacement of the widely grown susceptible varieties Kubsa and Galama. In 2013/14, a new Pgt race (TKTTF) - unrelated to Ug99 - caused 100% yield losses on bread wheat variety Digalu. The continuing epidemic calls for fast replacement...Read complete abstract

Primary Author: Badebo, CIMMYT-Ethiopia

Keywords: Ethiopia, seed, training, gender, surveillance

Investigation on heat stress tolerance in bread wheat (Triticum aestivum. L) for the conditions of terminal heat stress.

Heat stress globally remains the most important factor determining yield anomalies. Terminal heat stress shortens the duration of grain filling. Hence, this investigation was undertaken during the cropping season 2016-17 to evaluate heat stress tolerance of 32 bread wheat genotypes planted in timely (optimal temperature) and late (terminal heat stress) sown condition at Agharkar Research Institute, Pune. Data were collected and analyzed for various agronomical and physiological traits and...Read complete abstract

Primary Author: Bagwan, Agharkar Research Institute Pune

Keywords:

Monitoring wheat diseases in Nepal 2014-2016

Disease surveillance is very important in establishing the status of disease response in crops. During the 2014 to 2016 wheat seasons, foliar blight (spot blotch caused by Bipolaris sorokiniana and tan spot caused by Pyrenophora tritici-repentis) was recorded as severe across the entire whole plains region. Foliar blight was moderate in the mid hills, especially the Kathmandu valley. Leaf rust was severe (10MS - 100S) at several places in the mid hills. This could be due either to climatic...Read complete abstract

Primary Author: Baidya, Plant Pathology Division, Nepal Agricultural Research Council

Keywords: surveillance

Achieving triple rust resistance in wheat through combination of phenomic and genomic tools

Dr. Norman Borlaug stated that rust never sleeps and this enables rust pathogens to produce new strains capable of putting rust resistance genes to rest. These pathogens continue to pose threats to global wheat production. Wheat breeders have made significant progress to control rust outbreaks using conventional selection technologies; however, some critical shifts in pathogen populations have let them down. Rapid evolution in molecular marker technologies in the last 15 years and...Read complete abstract

Primary Author: Bansal, University of Sydney Plant Breeding Institute

Keywords: genomics, markers

Development of adapted wheat lines resistant to Ug99+ with combinations of Sr26, Sr32 and Sr39

Wheat stem rust (SR), caused by Puccinia graminis f. sp. tritici, (Pgt) is considered one of the most destructive diseases of the wheat crop. As Sr24 and Sr31 are the most widely used resistance genes in the Southern Cone of America, wheat crops in this region is under threat of SR outbreaks posed by the potential migration of virulent Pgt Ug99-lineage races (Ug99+). Efforts have to be made to develop adapted lines resistant to Ug99+. Genes Sr26, Sr32 and Sr39 are effective to both Ug99+ and...Read complete abstract

Primary Author: Baraibar, Instituto Nacional de Investigaci?n Agropecuaria (INIA) La Estanzuela

Keywords: stem rust, ug99

Wheat rust in Brazil

Wheat is the best cropping option for the winter season in southern Brazil. According to current predictions the wheat area in 2015 will decline by 5.3% (146 thousand hectares) due to low prices for cereal grain and to high precipitation and disease severities (principally FHB and wheat blast) in 2014 that caused high losses in production. Due to high inoculum pressure leaf rust is controlled every year by resistance genes and fungicide application (an average three applications during the...Read complete abstract

Primary Author: Barcellos, OR Melhoramento de Sementes Ltda., Brazil

Keywords: Brazil

Rust resistant wheat in Bangladesh: Progress and prospects

Leaf rust is most common wheat rust in Bangladesh. Late planted wheat crops are more likely to be affected. Yellow rust occurs occasionally with sporadic infection in the northern parts and stem rust was observed after three decades in 2014, but Ug99 races were not detected. The Wheat Research Centre in Bangladesh works in collaboration with CIMMYT and BGRI to develop high yielding rust resistant wheat varieties. Advanced lines and breeding materials are screened every year at KARLO, Kenya,...Read complete abstract

Primary Author: Barma, Bangladesh Agricultural Research Institute (BARI)

Keywords: Bangladesh

Current work on rusts, blight and blast on wheat in Bangladesh

The major diseases of wheat in Bangladesh are leaf blight and leaf rust. Yellow rust occurs occasionally with sporadic infection in the northern parts whereas stem rust was observed only in 2014. So far the country is free of Pgt race Ug99. Wheat blast, a devastating head disease, was first reported in 2016. Currently, about 65% of the wheat area in Bangladesh is covered by leaf rust resistant varieties and about 30% of the area is covered by Ug99 resistant varieties. Surveillance and...Read complete abstract

Primary Author: Barma, Bangladesh Agricultural Research Institute

Keywords:

Phylogenetic relationships of Berberis species in Ecuador, and pathogenicity of rust pathogens on Berberis

Identifying and tracking new races of wheat rust pathogens in a timely manner is important for early warning of disease potential in wheat-growing regions. Ecuador, located in northwestern South America, serves as a strategic monitoring location for rust fungi between the wheat production areas of North and South America. New races are likely to occur more often when the fungus is in the proximity of the alternate Berberis species host. More than 30 Berberis species have...Read complete abstract

Primary Author: Barnes, Universidad de las Américas, Ecuador

Keywords: Ecuador, barberry, alternate host

Utilizing a natural population of inter-specific barberry hybrids in New England to characterize the genetics of Puccinia graminis resistance in Berberis thunbergii

In the northeastern United States, outside the boundaries of the 20th century federal barberry eradication zone, both common barberry (Berberis vulgaris) and Japanese barberry (B. thunbergii) are found in great abundance, to the extent that both are considered invasive species. Much less common and relatively less studied is their interspecific hybrid, B. ×ottawensis, which has been produced in the ornamental horticultural industry but which also occurs...Read complete abstract

Primary Author: Bartaula, Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, USA

Keywords: barberry, stem rust

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