Evolving usage of materials from CIMMYT in developing Australian wheat varieties

2006 ◽  
Vol 57 (9) ◽  
pp. 947 ◽  
Author(s):  
John P. Brennan ◽  
Kathryn J. Quade
Keyword(s):  
Developing Countries ◽  
Wheat Varieties ◽  
Breeding Programs ◽  
Wheat Improvement ◽  
Australian State ◽  
Australian Wheat ◽  
Different Origins ◽  
Over Time

Wheat genetic materials developed at the International Maize and Wheat Improvement Center (CIMMYT) in Mexico for developing countries and varieties developed from those genetic materials have resulted in yield increases in Australia. The usage of the genetic materials obtained from CIMMYT has evolved over time, with fewer Australian varieties resulting from either direct CIMMYT crosses or having a CIMMYT line as a parent. There has been an increasing tendency to use adapted Australian lines with CIMMYT ancestry, rather than CIMMYT lines, as parents. These changes are examined, both in terms of varieties released in Australia and for the shares of wheat area sown to crosses of different origins, for each Australian state. The results demonstrate that for the benefits of international developments to be made available to Australian producers, Australian-based breeding programs are essential.

Microsatellites as markers for Australian wheat improvement

2001 ◽  
Vol 52 (12) ◽  
pp. 1121 ◽  
Author(s):  
N. Harker ◽  
L. R. Rampling ◽  
M. R. Shariflou ◽  
M. J. Hayden ◽  
T. A. Holton ◽  
...  
Keyword(s):  
Molecular Marker ◽  
Genetic Markers ◽  
Wheat Breeding ◽  
Genetic Maps ◽  
Wheat Varieties ◽  
Breeding Programs ◽  
Wheat Improvement ◽  
Australian Wheat ◽  
Mapping Populations

Microsatellite markers have been shown to be highly polymorphic and simple to use in hexaploid wheat. This study aimed to establish microsatellites as informative markers for Australian wheat improvement. By screening microsatellites developed as part of the Wheat Microsatellite Consortium and other available microsatellite sources, 257 informative microsatellites for Australian wheat varieties were identified and reported in the Australian National Wheat Molecular Marker Program microsatellite database (http://www.scu.edu.au/research/cpcg/). Of these, 151 microsatellites identifying 172 loci were scored on at least 1 of 4 double haploid mapping populations and were then integrated, where possible, into existing genetic maps. Polymorphism information content values were calculated for most microsatellites to establish a reference for their value for future investigations. The mapping of available microsatellites enhances the quality of the genetic maps and may provide useful genetic markers for traits of interest to the Australian wheat breeding programs.

Evaluation of Molecular Markers Specific for 1BL∙1RS Translocation and Characterization of 1RS Chromosome in Wheat Varieties from Different Origins

2009 ◽  
Vol 35 (11) ◽  
pp. 2107-2115 ◽  
Author(s):  
Huai-Jun TANG ◽  
Gui-Hong YIN ◽  
Xian-Chun XIA ◽  
Jian-Jun FENG ◽  
Yan-Ying QU ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Wheat Varieties ◽  
Different Origins

scholarly journals EMS Derived Wheat Mutant BIG8-1 (Triticum aestivum L.)—A New Drought Tolerant Mutant Wheat Line

2021 ◽  
Vol 22 (10) ◽  
pp. 5314
Author(s):  
Marlon-Schylor L. le Roux ◽  
Nicolas Francois V. Burger ◽  
Maré Vlok ◽  
Karl J. Kunert ◽  
Christopher A. Cullis ◽  
...  
Keyword(s):  
Amino Acids ◽  
Water Deficit ◽  
Triticum Aestivum L ◽  
Water Deficit Stress ◽  
Drought Response ◽  
Fibrous Root ◽  
Wheat Varieties ◽  
Breeding Programs ◽  
Response Characteristics ◽  
Drought Tolerant

Drought response in wheat is considered a highly complex process, since it is a multigenic trait; nevertheless, breeding programs are continuously searching for new wheat varieties with characteristics for drought tolerance. In a previous study, we demonstrated the effectiveness of a mutant known as RYNO3936 that could survive 14 days without water. In this study, we reveal another mutant known as BIG8-1 that can endure severe water deficit stress (21 days without water) with superior drought response characteristics. Phenotypically, the mutant plants had broader leaves, including a densely packed fibrous root architecture that was not visible in the WT parent plants. During mild (day 7) drought stress, the mutant could maintain its relative water content, chlorophyll content, maximum quantum yield of PSII (Fv/Fm) and stomatal conductance, with no phenotypic symptoms such as wilting or senescence despite a decrease in soil moisture content. It was only during moderate (day 14) and severe (day 21) water deficit stress that a decline in those variables was evident. Furthermore, the mutant plants also displayed a unique preservation of metabolic activity, which was confirmed by assessing the accumulation of free amino acids and increase of antioxidative enzymes (peroxidases and glutathione S-transferase). Proteome reshuffling was also observed, allowing slow degradation of essential proteins such as RuBisCO during water deficit stress. The LC-MS/MS data revealed a high abundance of proteins involved in energy and photosynthesis under well-watered conditions, particularly Serpin-Z2A and Z2B, SGT1 and Calnexin-like protein. However, after 21 days of water stress, the mutants expressed ABC transporter permeases and xylanase inhibitor protein, which are involved in the transport of amino acids and protecting cells, respectively. This study characterizes a new mutant BIG8-1 with drought-tolerant characteristics suited for breeding programs.

Seed Governance at the Intersection of Multiple Global and Nation-State Priorities: Modernizing Seeds in Turkey

2012 ◽  
Vol 12 (4) ◽  
pp. 125-146 ◽  
Author(s):  
Nurcan Atalan-Helicke ◽  
Becky Mansfield
Keyword(s):  
Developing Countries ◽  
Intellectual Property ◽  
Genetic Resources ◽  
Intellectual Property Rights ◽  
Nation State ◽  
Wheat Varieties ◽  
Global Perspectives ◽  
Convergence Results ◽  
International Regulations ◽  
Agriculture Development

Given their value for both agriculture and biodiversity, seeds are the target of controversial efforts to establish intellectual property rights and variety protections that regulate sale, exchange, and breeding of genetic resources. This article examines seed governance in Turkey, a country in which many farmers continue to rely on “traditional” wheat varieties. It analyzes the tensions and ambiguities in seed governance that arise at the intersection of Turkey's goals of development and diverse priorities imposed by international frameworks. Seed governance is the product of an open-ended process of strategic elaboration among constituencies involved in trade, agriculture, development, and conservation. Although contradictions among international regulations present an array of choices, many countries including Turkey adopt laws that favor commercialization and privatization. This convergence results not simply from imposition of regulation from above, but also from developing countries' adoption of dominant global perspectives on the “modern” seed and agricultural progress.

scholarly journals Population structure of Chinese southwest wheat germplasms resistant to stripe rust and powdery mildew using the DArT-seq technique

2018 ◽  
Vol 48 (4) ◽  
Author(s):  
Tianqing Chen ◽  
Piyada Alisha Tantasawat ◽  
Wei Wang ◽  
Xu Gao ◽  
Liyi Zhang
Keyword(s):  
Population Structure ◽  
Disease Resistance ◽  
Polymorphic Information Content ◽  
Wheat Breeding ◽  
Wheat Varieties ◽  
Group I ◽  
Population Structure Analysis ◽  
Specific Allele ◽  
The Mean ◽  
Different Origins

ABSTRACT: Understanding genetic variability in existing wheat accessions is critical for collection, conservation and use of wheat germplasms. In this study, 138 Chinese southwest wheat accessions were investigated by genotyping using two resistance gene makers (Pm21 and Yr26) and DArT-seq technique. Finally, about 50% cultivars (lines) amplified the specific allele for the Yr26 gene (Gwm11) and 40.6% for the Pm21 gene (SCAR1265). By DArT-seq analysis, 30,485 markers (6486 SNPs and 23999 DArTs) were obtained with mean polymorphic information content (PIC) value 0.33 and 0.28 for DArT and SNP marker, respectively. The mean Dice genetic similarity coefficient (GS) was 0.72. Two consistent groups of wheat varieties were identified using principal coordinate analysis (PCoA) at the level of both the chromosome 6AS and the whole-genome, respectively. Group I was composed of non-6VS/6AL translocation lines of different origins, while Group II was composed of 6VS/6AL translocation (T6VS/6AL) lines, most of which carried the Yr26 and Pm21 genes and originated from Guizhou. Besides, a model-based population structure analysis revealed extensive admixture and further divided these wheat accessions into six subgroups (SG1, SG2, SG3, SG4, SG5 and SG6), based on their origin, pedigree or disease resistance. This information is useful for wheat breeding in southwestern China and association mapping for disease resistance using these wheat germplasms in future.

Review of Article 27.3(b) and the Patenting of Life Forms: Hitting a BRIC Wall in the WTO?

2021 ◽  
Vol 26 (2) ◽  
pp. 289-318
Author(s):  
Jagjit Plahe ◽  
Nitesh Kukreja ◽  
Sunil Ponnamperuma
Keyword(s):  
Developing Countries ◽  
Property Rights ◽  
Intellectual Property Rights ◽  
World Trade ◽  
Private Property ◽  
Life Forms ◽  
Private Property Rights ◽  
Ethical Concerns ◽  
The World ◽  
Over Time

Abstract Under Article 27.3(b) of the Trade-Related Aspects of Intellectual Property Rights (TRIPS) Agreement of the World Trade Organization (WTO), all members are required to extend private property rights to life forms. Using official WTO documents, this article analyzes the negotiating positions of WTO members on life patents during a review of Article 27.3(b) which commenced in 1999 and is currently ongoing. Initially, developing countries raised serious ethical concerns regarding life patents, creating a clear North-South divide. However, over time the position of Brazil and India moved away from the ethics of life patents to the prevention of bio-piracy, a position supported by China. Russia too is supportive of life patents. A group of small developing countries have, however, continued to question the morality of life patents despite this “BRIC wall,” changing the dynamics of the negotiations from a North-South divide to one which now includes a South-South divide.

Institutions, Investment, and Growth in Developing Countries

2020 ◽  
pp. 220-237
Author(s):  
Giovanni Andrea Cornia
Keyword(s):  
Developing Countries ◽  
Economic Development ◽  
Political Stability ◽  
Informal Institutions ◽  
Economic Institutions ◽  
Formal Institutions ◽  
The Public ◽  
Over Time ◽  
Macroeconomic Stability

Many analyses of long-term development neglect the importance of formal and informal political and economic institutions in developing countries. This chapter discusses the nature of such institutions, their endogeneity and persistence over time as well as their impact on growth, inequality, and political stability. The chapter places particular attention on the institutions that build the market and facilitate economic exchange, and on the public organizations mandated with their enforcement. It then discusses their impact on growth and macroeconomic stability as well as the role played by informal institutions in developing countries where formal institutions are often perceived as a costly obstacle to economic development.

Using Information Technology to Spread Awareness about Communicable Diseases

2016 ◽  
pp. 543-559
Author(s):  
Twiesha Vachhrajani ◽  
Lavanya Rao ◽  
H. R. Rao
Keyword(s):  
Information Technology ◽  
Developing Countries ◽  
Information Systems ◽  
Developing World ◽  
Developed Countries ◽  
Communicable Diseases ◽  
Global Average ◽  
Indispensable Tool ◽  
Time Changes ◽  
Over Time

Over time, changes in lifestyles, surroundings, and presence of parasites in the developed and developing world has resulted in new strains of various communicable diseases such as AIDS, tuberculosis, malaria, etc. Even though the global average of diseases may be quite low, the concentration in certain countries is much higher. In developed countries, information technology has proved to be an indispensable tool to spread awareness regarding these communicable diseases; however, most developing countries lack the infrastructure needed to use these same resources to educate people about the prevention, symptoms, and treatment available. This chapter makes the following contributions: first, it outlines some of the critical challenges regarding the spread of communicable diseases. It then identifies and summarizes the various information systems strategies used in developed and developing countries. The conclusion ties these together and offers suggestions to further curb the spread of communicable diseases in developing countries.

Severing Corruption from Everyday Life

2014 ◽  
Vol 1 (3) ◽  
pp. 13-25
Author(s):  
Babatunde Joshua Omotosho
Keyword(s):  
Developing Countries ◽  
Everyday Life ◽  
Economic Factors ◽  
Success Story ◽  
Political Landscape ◽  
Over Time

One of the challenging scenarios regarding political landscape in developing countries has to do with corruption and Nigeria is not an exception. Politicians often tow the paths of corrupt practices (while preparing for election and upon assumption of political offices) due to a number of social and economic factors. Attempts have been made by different administrations in this country to severe these twin brothers (corruption and politics) in order to ensure a lasting democracy in Nigeria. In spite of these efforts, the success story is nothing to write home about. The questions therefore are: is there any tie between corruption and culture? At what point did corruption become an identifiable feature of Nigerian politics? What are the steps taken so far to address this menace and what are the achievements over time? All these issues and others become critical as this paper examines the place of culture in corruption in Nigeria.

scholarly journals You Can't Count on Me: The Impact of Electricity Unreliability on Productivity

2017 ◽  
Vol 46 (3) ◽  
pp. 579-602
Author(s):  
Sharon Poczter
Keyword(s):  
Developing Countries ◽  
Industrial Production ◽  
Solar Irradiance ◽  
Electricity Demand ◽  
District Level ◽  
Firm Level ◽  
The Impact ◽  
Electricity Provision ◽  
Over Time

While access to reliable electricity can significantly constrain industrial production, little is known as to how unreliability impacts firm level productivity. This is a particularly salient issue for firms in developing countries, where electricity provision is still unreliable and self-generation is costly. This paper analyzes the impact of electricity provision on productivity, instrumenting for electricity demand with district level solar irradiance. Results indicate that firms exhibit decreasing productivity in the initial stages of electricity adoption that decreases over time. Furthermore, I find that unreliability negatively impacts productivity initially and over time, and this effect is larger for smaller firms.

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