2015 BGRI Poster Abstracts

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Displaying 51 - 60 of 415

Transgenerational response to high temperature stress in Indian bread wheat cultivar HD2967

The present challenge in wheat breeding is to decipher the molecular mechanisms of heat stress response and thermotolerance in detail for future applications. Several reports indicate the ability of plants to maintain a memory of stress exposure throughout their ontogenesis and even transmit it faithfully to the following generation. Here, three diverse genotypes of wheat viz., HD2967, WR544 and C306 were used for thermotolerance assays. The genotype HD2967 was able to withstand heat stress...Read complete abstract

Primary Author: Barthakur, ICAR NRC Plant Biotechnology


How to adapt durum wheat when the environment tries everything to kill it

Durum wheat is the tenth most important crop in the world, but its cultivation is mostly limited to harsh, arid, and heat prone marginal lands. Breeding for tolerance to these conditions is often considered the most strategic approach to ensure adaptation, especially when paired with best agronomical practices. The word 'adaptation' summarizes all the research efforts conducted to identify the many traits controlling the mechanisms for withstanding or escaping the traceries of the...Read complete abstract

Primary Author: Bassi, ICARDA, Rabat

Keywords: genomic selection

Economic impact of front line demonstrations on wheat in the Semi-Arid tropics of western Maharashtra, India

Frontline demonstrations (FLDs,) on wheat were conducted by Agharkar Research Institute, Pune, during last five rabi seasons from 2012-13 to 2016-17 at farmer's fields of Pune and Satara district under wheat growing area of semi-arid tropics of western Maharashtra, India. Before conducting FLDs, a group meeting held every year in the selected village and specific skill training had imparted to the randomly selected farmers regarding adoption of different improved aspects of cultivation...Read complete abstract

Primary Author: Baviskar, Agharkar Research Institute Pune


How has Lr34/Yr18 conferred effective rust resistance in wheat for so long?

The Lr34/Yr18 gene has been used in agriculture for more than 100 years. In contrast to many other resistance sources against leaf rust and stripe rust, it has remained effective and no virulence has been reported. This makes Lr34 a unique and highly valuable resource for rust resistance breeding. The pleiotropic nature of the gene conferring partial resistance to different pathogen species, the associated leaf tip necrosis and its durability suggest a molecular mechanism...Read complete abstract

Primary Author: Beat Keller, Institute of Plant Biology, University of Zurich, Switzerland


Cultivating Success in Ethiopia: The contrasting stripe rust situations in 2010 and 2013

In 2010, Ethiopia experienced one of the largest stripe rust epidemics in recent history. Over 600,000 ha of wheat were affected, an estimated 60 million Ethiopian Birr ($US3.2 million) were spent on fungicides and large production losses were observed. Factors associated with the 2010...Read complete abstract

Primary Author: Bekele Abeyo, CIMMYT-Ethiopia


Performance of CIMMYT germplasm in Ethiopia: Key materials for variety development

CIMMYT wheat germplasm flow to Ethiopia started in the late 1960s. Over 90 bread wheat varieties were released over the decades. Of these, about 77% had CIMMYT origins or were derived from CIMMYT materials. Wheat is a traditional rainfed crop grown by 5 million small-scale farmers on 1.6 ha more or less. Yields have increased from 1.0 t/ha in the 1960s to 2.54 t/ha in 2014 mainly due to high yielding semi-dwarf bread wheat varieties and modern agronomic practices. Using such technologies,...Read complete abstract

Primary Author: Bekele Abeyo, CIMMYT-Ethiopia

Keywords: Ethiopia, CIMMYT, germplasm

Breeding Studies of Resistant Varieties to Stripe and Stem Rust Diseases in West Transitional Zone of Turkey

The most serious wheat diseases affecting yield and quality in West Transitonal Zone of Turkey is rust diseases. Breeding resistant varieties is the most economic and confident way to struggle with these diseases. In this study, it was aimed to determine the genotypes which are resistant to stripe and stem rust diseases existing in our region and use these genotypes as material in breeding program. The study was carried out in 2014 at natural and artificial epidemic conditions in the...Read complete abstract

Primary Author: Belen, Transitional Zone Agricultural Research Institute, Turkey

Keywords: stripe rust, stem rust, Turkey

System biology to decipher regulatory network hubs that control Zymoseptoria tritici-wheat infection process

Septoria tritici blotch disease, caused by the fungus Zymoseptoria tritici, is a major threat to global wheat production. With the recent advances in high-throughput DNA-based technologies, Z. tritici has become a powerful model system for the discovery of candidate determinants that underlie virulence and host specialization. Although a few important virulence/regulatory genes have been identified, a global understanding of the larger regulatory network has not been developed. Therefore, to...Read complete abstract

Primary Author: Ben M'Barek, Laboratory of Molecular Plant Physiology, Biotechnology Center of Borj Cedria (CBBC)

Keywords: Septoria

Monitoring the yellow rust pathogen in Algeria

Among the many biotic constraints to wheat production in Algeria, rusts and in particular yellow rust (Puccinia striiformis), are among the most prevalent diseases that occur mostly all over the northern part of the country. Yellow rust has become now sporadic due to the exploitation of effective resistant genes in different forms and combinations (from CIMMYT and ICARDA). Earlier, durable resistance was probably due to many genes, such Yr18, Yr9, Yr27 and Yr1.
Yellow rust appeared as...Read complete abstract

Primary Author: Benbelkacem, National Agronomic Research Institute of Algeria


Yield performance and preliminary screening of promising bread wheat genotypes for yellow rust and Septoria tritici blotch in Morocco

Bread wheat is the most important staple crop in Morocco. However, the low national production represents less than 50% of national need. Yellow (stripe) rust (Pst) and Septoria tritici blotch (STB) are the most important foliar diseases limiting bread wheat production in Morocco. The objective of this study was to identify effective sources of resistance to Pst and STB and to select candidate lines displaying high yield and resistance traits. A total of 194 bread wheat...Read complete abstract

Primary Author: Bennani, National Institute of Agricultural Research, INRA, Morocco

Keywords: Morocco, bread wheat, stripe rust