Selenium characterisation of the Portuguese bread-wheat archival collection

2015 ◽  
Vol 66 (11) ◽  
pp. 1111 ◽  
Author(s):  
Catarina Galinha ◽  
Adriano M. G. Pacheco ◽  
Maria do Carmo Freitas ◽  
Ana Rita P. Costa ◽  
Nuno M. B. Pinheiro ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Research Reactor ◽  
Frame Of Reference ◽  
Archival Collection ◽  
Veterinary Research ◽  
Cyclic Neutron Activation Analysis ◽  
The Status ◽  
Low Levels ◽  
Wheat Lines ◽  
Genetic Development

Following the first morphological and taxonomic inventory of Portuguese wheat in 1933, an archival collection of representative varieties has been maintained, replanted and documented by the National Institute of Agricultural and Veterinary Research (INIAV), specifically by its division formerly known as the National Station for Plant Improvement (ENMP-Elvas, now INIAV-Elvas). The INIAV-Elvas wheat collection has always been an invaluable asset in studies of agronomic and/or genetic development of wheat lines, as well as providing a frame of reference for the nutritional evolution of Portuguese wheat crops. This work addresses the status of selenium (Se) in a pool of 46 accessions of bread wheat. Special attention is paid to the (low) levels of Se, for which wheat acts as an important source in human diets, with a view to curbing its deficiency in Portuguese cultivars through biofortification strategies. All grain samples were irradiated at the Portuguese Research Reactor, and total Se was determined through cyclic neutron activation analysis. Our results indicate that the best candidates for an improvement of Se contents in mature grains are cvv. Ideal, Ribeiro (b) and Ribeiro (a), and the worst candidates are cvv. Restauração, Galego Rapado and Rieti.

scholarly journals Grain yield and correlated traits of bread wheat lines: Implications for yield improvement

2021 ◽  
Author(s):  
Muhammad Irfan Ullah ◽  
Shahzadi Mahpara ◽  
Rehana Bibi ◽  
Rahmat Ullah Shah ◽  
Rehmat Ullah ◽  
...  
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Yield Improvement ◽  
Correlated Traits ◽  
Wheat Lines

Construction of comparative genetic maps of two 4Bs.4Bl-5Rl translocations in bread wheat (Triticum aestivum L.)

Genome ◽  
2006 ◽  
Vol 49 (7) ◽  
pp. 729-734 ◽  
Author(s):  
R C Leach ◽  
I S Dundas ◽  
A Houben
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Rflp Analysis ◽  
Triticum Aestivum L ◽  
Genetic Maps ◽  
Homoeologous Group ◽  
Group 4 ◽  
Translocation Breakpoints ◽  
Group 5 ◽  
Wheat Lines

The physical length of the rye segment of a 4BS.4BL–5RL translocation derived from the Cornell Wheat Selection 82a1-2-4-7 in a Triticum aestivum 'Chinese Spring' background was measured using genomic in situ hybridization (GISH) and found to be 16% of the long arm. The size of this translocation was similar to previously published GISH measurements of another 4BS.4BL–5RL translocation in a Triticum aestivum 'Viking' wheat background. Molecular maps of both 4BS.4BL–5RL translocations for 2 different wheat backgrounds were developed using RFLP analysis. The locations of the translocation breakpoints of the 2 4BS.4BL–5RL translocations were similar even though they arose in different populations. This suggests a unique property of the region at or near the translocation breakpoint that could be associated with their similarity and spontaneous formation. These segments of rye chromosome 5 also contain a gene for copper efficiency that improves the wheat's ability to cope with low-copper soils. Genetic markers in these maps can also be used to screen for copper efficiency in bread wheat lines derived from the Cornell Wheat Selection 82a1 2-4-7.Key words: Triticum aestivum, wheat–rye translocation, homoeologous group 4, homoeologous group 5, GISH, comparative map, copper efficiency, hairy peduncle.

Field Screening of Salinity Tolerance in Iranian Bread Wheat Lines

Crop Science ◽  
2014 ◽  
Vol 54 (4) ◽  
pp. 1489-1496 ◽  
Author(s):  
Somaye Sardouie-Nasab ◽  
Ghasem Mohammadi-Nejad ◽  
Babak Nakhoda
Keyword(s):  
Bread Wheat ◽  
Salinity Tolerance ◽  
Field Screening ◽  
Wheat Lines

scholarly journals Expected genetic gains from mono trait and indexbased selection in advanced bread wheat (Triticum aestivum L.) populations

2020 ◽  
Vol 73 (2) ◽  
pp. 9131-9141
Author(s):  
Zine El Abidine Fellahi ◽  
Abderrahmane Hannachi ◽  
Hamenna Bouzerzour
Keyword(s):  
Grain Yield ◽  
Bread Wheat ◽  
Flag Leaf ◽  
Block Design ◽  
Triticum Aestivum L ◽  
Research Unit ◽  
Kernel Weight ◽  
Wide Range ◽  
Wheat Lines ◽  
Selection Of

This study aimed at evaluating the expected gains from selection obtained based upon direct, indirect, and index-based selection in a set of 599 bread wheat lines. The experiment was carried out at the experimental field of INRAA institute, Setif research unit (Algeria), in a Federer augmented block design including three controls. A wide range of genetic variability was observed among lines for the eleven traits assessed. The results indicated that index-based selection and selection based on grain yield expressed higher expected genetic gain than direct and indirect mono-trait-based selection. The best 15 selected lines exhibited higher grain yield than the control varieties, and they were clustered in three groups that contrasted mainly for the flag-leaf area, thousand-kernel weight, biomass, and harvest index. The index-based selection appears as a useful tool for the rapid selection of early filial generations, enriching selected breeding materials with desirable alleles and reducing the number of years required to combine these traits in elite varieties.

The status and future of bilingual education for remote indigenous students in the Northern Territory

2011 ◽  
Vol 34 (3) ◽  
pp. 260-279 ◽  
Author(s):  
Brian Devlin
Keyword(s):  
Bilingual Education ◽  
Northern Territory ◽  
Student Attendance ◽  
Political Decision ◽  
Educational Approach ◽  
Indigenous Students ◽  
The Status ◽  
Low Levels ◽  
The Cost ◽  
Political Decision Making

This article analyses the status and future of bilingual education programs using Indigenous languages and English in remote Northern Territory schools. It explains why this educational approach is so contested at present, resulting in an unresolved situation which can best be regarded as an uneasy compromise on the ground and a stalemate at higher levels of political decision making. If the bilingual education approach was better understood by the current NT Government, there would a strong impetus now to refine and effectively implement a model of schooling that is appropriate for students in remote areas. Instead, current politicians debunk the bilingual approach, thereby robbing schools and literacy plans of any momentum and distracting attention away from the work that needs to be done. Meanwhile, student attendance rates have fallen away to worryingly low levels (Dickson, 2010). The current regime may well resolve the impasse, but in the absence of any meaningful, open negotiation the future looks uncertain. It is too soon to judge the cost of this uncertainty, but it may well result in further alienation and the emergence of non-government alternatives.

Registration of Five Synthetic Hexaploid Wheat and Seven Bread Wheat Lines Resistant to Wheat Spot Blotch

Crop Science ◽  
2001 ◽  
Vol 41 (5) ◽  
pp. 1653-1654 ◽  
Author(s):  
A. Mujeeb‐Kazi ◽  
S. Cano ◽  
V. Rosas ◽  
A. Cortes ◽  
R. Delgado
Keyword(s):  
Bread Wheat ◽  
Hexaploid Wheat ◽  
Spot Blotch ◽  
Synthetic Hexaploid Wheat ◽  
Synthetic Hexaploid ◽  
Wheat Lines

The relationship between root system development and vernalization under contrasting irrigation in bread wheat lines with the introgressions from a synthetic hexaploid

2020 ◽  
Vol 92 (3) ◽  
pp. 583-595
Author(s):  
Tatyana A. Pshenichnikova ◽  
Olga G. Smirnova ◽  
Alexander V. Simonov ◽  
Ludmila V. Shchukina ◽  
Evgeniya V. Morozova ◽  
...  
Keyword(s):  
Root System ◽  
Bread Wheat ◽  
System Development ◽  
Root System Development ◽  
Synthetic Hexaploid ◽  
Wheat Lines ◽  
The Relationship

Detection of y-type Subunit at theGlu-A1Locus in Some Swedish Bread Wheat Lines

1996 ◽  
Vol 23 (3) ◽  
pp. 203-211 ◽  
Author(s):  
B. Margiotta ◽  
M. Urbano ◽  
G. Colaprico ◽  
E. Johansson ◽  
F. Buonocore ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Wheat Lines
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