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Breeding durum wheat for South Australia /Brooks, Brenton James. January 2004 (has links) (PDF)
Thesis (Ph.D.)--University of Adelaide, School of Agriculture and Wine, Discipline of Plant and Pest Science, 2004? / "March, 2004" Bibliography: leaves 204-229.
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Agronomic potential and physiological performance of synthetic hexaploid wheat-derived populations /Del Blanco, Isabel Alicia. January 1999 (has links)
Thesis (Ph. D.)--Oregon State University, 1999. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
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Variation and genetic control of prolamins in tetraploid wheats and their association with quality in durum wheat /Liu, Chao-yin. January 1994 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, 1994. / Includes bibliographical references (leaves 180-198).
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Breeding durum wheat for South Australia / by Brenton James BrooksBrooks, Brenton James January 2004 (has links)
"March, 2004" / Bibliography: leaves 204-229. / xv, 229 leaves : ill. (some col.), map (col.), photos (col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The outcome of the yield evaluation trials conducted in this study was the identification of the high-yielding and widely adapted line, RH912025, which was consequently released as the variety Tamaroi. Development of B tolerant lines, with a grain yield advantage when grown under high B conditions in the field, means durum production will be able to expand into the marginal areas where B toxicity occurs. Furthermore, by pyramiding genes for B tolerance and dough strength (i.e. subunit 2*) into Tamaroi, the result should be widely grown germplasm, with premium quality for the international market. --p. x. / Thesis (Ph.D.)--University of Adelaide, School of Agriculture and Wine, Discipline of Plant and Pest Science, 2005
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Estimates of genetic variability and efficiency of early generation selection for grain yield and protein content in durum wheat crosses (Triticum turgidum. L. var. durum)Rezgui, Salah 16 August 1993 (has links)
Graduation date: 1994
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Growth and yield of durum and bread wheat /Zubaidi, Akhmad. January 1996 (has links) (PDF)
Thesis (M. Ag. Sc.)--University of Adelaide, Dept. of Plant Science, 1997. / Includes bibliographical references (leaves 148-160).
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Variation and genetic control of prolamins in tetraploid wheats and their association with quality in durum wheat / by Chao-yin Liu.Liu, C.-Y. January 1994 (has links)
Bibliography: leaves 180-198. / viii, 217 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Plant Science, 1994
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Variation and genetic control of prolamins in tetraploid wheats and their association with quality in durum wheatLiu, Chao-yin. January 1994 (has links) (PDF)
Bibliography: leaves 180-198.
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Gluten protein polymeric composition and allelic variation as related to bread-making quality in durum wheat (Triticum turgidum L. var. durum)Ammar, Karim 28 March 1997 (has links)
Attempts to develop dual-purpose durum wheat cultivars for both pasta and bread-making
have been unsuccessful. To better understand this limitation, thirty durum
genotypes, selected based on their diverse geographical origin, and five bread wheat
cultivars were compared as to their flour mixing properties, dough physical characteristics
and baking performance. The polymeric composition of gluten protein was determined
using SE-HPLC of unreduced flour protein extracts and the size-distribution of the gluten
polymer was estimated by determining the SDS-unextractable polymer (macro-polymer)
content. Durum genotypes were characterized by a lower bread-making quality compared
to bread wheats, in spite of higher total flour protein and gluten polymer contents. This
was due to a weaker gluten and lack of dough extensibility. The stronger gluten
characteristics of bread wheats were associated with a greater ability to form macro-polymers.
However, two durum cultivars had a higher macro-polymer content than many
of the bread wheats, suggesting that an additional property, unrelated to size-distribution
of the gluten, contributes to the greater loaf volumes observed for bread wheats.
Considerable variability for most quality attributes was observed among durum genotypes.
Gluten strength and dough extensibility were the most important factors associated with
superior baking performance. These two parameters were not inter-related. Durum
genotypes expressing LMWG-1 had the weakest gluten and the poorest baking
performance. This allele contributed less protein to the glutenin fraction and the sub-units
produced exhibited a reduced ability to form macro-polymers. Among the durum
genotypes expressing LMWG-2, those carrying HMWG-(6+8) were characterized by a
better baking quality than genotypes carrying HMWG-(7+8) or HMWG-20. Genotypes
carrying HMWG-20 were characterized by a comparatively weaker gluten and a lower
macro-polymer content. The better baking performance of genotypes expressing HMWG-(6+8) relative to that of genotypes carrying HMWG-(7+8) was attributed to the greater
dough extensibility characterizing the former group, but not to differences in gluten
strength-related parameters. There was no indication of differences in the gluten
polymer's size-distribution between the two groups. / Graduation date: 1997
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Estimates of genetic variability resulting from single, top, and double cross populations in durum wheat (Triticum turgidum L. var. durum)Abdennadher, Mourad 07 December 1990 (has links)
The success of a plant breeding program depends upon the availability of
useable genetic diversity. Such diversity may be enhanced depending on the type of
hybridization strategy employed. Segregating progenies resulting from F2
populations, a double cross, and a top cross were compared for the amount of
useable genetic diversity associated with six traits in durum wheat. The parental lines
were three winter selections, H7092-11, H7092-52, and WD5, and two spring
cultivars, WPB 881 and Altar 84. Traits evaluated were (1) plant height, (2) days to
maturity, (3) harvest index, (4) kernel weight, (5) grain yield, and (6) pigment
content.
Analysis of the population mean values suggested the superiority of the F1 top
cross for plant height, kernel weight, and grain yield. The F1 top cross progeny also
had the highest genetic variability for grain yield. F2 population of the cross Altar
84 I H7092-52 gave the highest mean values for days to maturity and harvest index,
and showed the highest genetic diversity for traits other than grain yield. The only
population showing detectable genetic variance for pigment content was the F2
progeny of the single cross WPB 881 / H7092-11. When genetic diversity was
detected, the double cross was approximately intermediate between the two F2
populations from which it was derived. Transgressive segregation was more frequent
in the top cross population for grain yield, kernel weight, and plant height.
No associations between grain yield and the other traits were noted for the F2
population of the single cross Altar 84 I H7092-52 and the top cross population. For
the second F2 population (WPB 881 / H7092-11) and the double cross population,
grain yield was found to be associated with harvest index and plant height.
The only consistent relationship across all segregating generations was a negative
correlation between plant height and harvest index.
Based on the genetic diversity and the transgressive segregation observed, top
crossing appears to be the more promising in improving grain yield in the
experimental material investigated. For specific traits other than grain yield, it would
appear that single crosses would be a more productive approach, however progress
would depend on the specific parental combination. The double cross was inferior
to the other crossing strategies for the traits measured. / Graduation date: 1991
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