CERZOS   05458
CENTRO DE RECURSOS NATURALES RENOVABLES DE LA ZONA SEMIARIDA
Unidad Ejecutora - UE
artículos
Título:
QTL analysis of pasta quality using a composite microsatellite and SNP map of durum wheat.
Autor/es:
W. ZHANG; S.CHAO; F.MANTHEY; O.CHICAIZA; J.C.BREVIS; V.ECHENIQUE; J.DUBCOVSKY
Revista:
THEORETICAL AND APPLIED GENETICS
Editorial:
Springer
Referencias:
Lugar: Berlín; Año: 2008 vol. 117 p. 1361 - 1377
ISSN:
0040-5752
Resumen:
Abstract Bright yellow color, Wrmness and low cooking
loss are important factors for the production of good-quality
pasta products. However, the genetic factors underlying
those traits are still poorly understood. To Wll this gap we
developed a population of 93 recombinant inbred lines
(RIL) from the cross between experimental line UC1113
(intermediate pasta quality) with the cultivar Kofa (excellent
pasta quality). A total of 269 markers, including 23
SNP markers, were arranged on 14 linkage groups covering
a total length of 2,140 cM. Samples from each RIL fromBright yellow color, Wrmness and low cooking
loss are important factors for the production of good-quality
pasta products. However, the genetic factors underlying
those traits are still poorly understood. To Wll this gap we
developed a population of 93 recombinant inbred lines
(RIL) from the cross between experimental line UC1113
(intermediate pasta quality) with the cultivar Kofa (excellent
pasta quality). A total of 269 markers, including 23
SNP markers, were arranged on 14 linkage groups covering
a total length of 2,140 cM. Samples from each RIL fromWll this gap we
developed a population of 93 recombinant inbred lines
(RIL) from the cross between experimental line UC1113
(intermediate pasta quality) with the cultivar Kofa (excellent
pasta quality). A total of 269 markers, including 23
SNP markers, were arranged on 14 linkage groups covering
a total length of 2,140 cM. Samples from each RIL from
Wve diVerent environments were used for complete pasta
quality testing and the results from each year were used for
QTL analyses. The combined eVect of diVerent loci,
environment and their interactions were analyzed using
factorial ANOVAs for each trait. We identiWed major QTLs
for pasta color on chromosomes 1B, 4B, 6A, 7A and 7B.
The 4B QTL was linked to a polymorphic deletion in theve diVerent environments were used for complete pasta
quality testing and the results from each year were used for
QTL analyses. The combined eVect of diVerent loci,
environment and their interactions were analyzed using
factorial ANOVAs for each trait. We identiWed major QTLs
for pasta color on chromosomes 1B, 4B, 6A, 7A and 7B.
The 4B QTL was linked to a polymorphic deletion in theVect of diVerent loci,
environment and their interactions were analyzed using
factorial ANOVAs for each trait. We identiWed major QTLs
for pasta color on chromosomes 1B, 4B, 6A, 7A and 7B.
The 4B QTL was linked to a polymorphic deletion in theWed major QTLs
for pasta color on chromosomes 1B, 4B, 6A, 7A and 7B.
The 4B QTL was linked to a polymorphic deletion in the
Lpx-B1.1 lipoxygenase locus, suggesting that it was associated
with pigment degradation during pasta processing. The
7B QTL for pasta color was linked to the Phytoene
synthase 1 (Psy-B1) locus suggesting diVerence in pigment
biosynthesis. QTLs aVecting pasta Wrmness and cooking
loss were detected on chromosomes 5A and 7B, and in both
cases they were overlapping with QTL for grain protein
content and wet gluten content. These last two parameters
were highly correlated with pasta Wrmness (R > 0.71) and
inversely correlated to cooking loss (R < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussedlipoxygenase locus, suggesting that it was associated
with pigment degradation during pasta processing. The
7B QTL for pasta color was linked to the Phytoene
synthase 1 (Psy-B1) locus suggesting diVerence in pigment
biosynthesis. QTLs aVecting pasta Wrmness and cooking
loss were detected on chromosomes 5A and 7B, and in both
cases they were overlapping with QTL for grain protein
content and wet gluten content. These last two parameters
were highly correlated with pasta Wrmness (R > 0.71) and
inversely correlated to cooking loss (R < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussedPhytoene
synthase 1 (Psy-B1) locus suggesting diVerence in pigment
biosynthesis. QTLs aVecting pasta Wrmness and cooking
loss were detected on chromosomes 5A and 7B, and in both
cases they were overlapping with QTL for grain protein
content and wet gluten content. These last two parameters
were highly correlated with pasta Wrmness (R > 0.71) and
inversely correlated to cooking loss (R < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussed(Psy-B1) locus suggesting diVerence in pigment
biosynthesis. QTLs aVecting pasta Wrmness and cooking
loss were detected on chromosomes 5A and 7B, and in both
cases they were overlapping with QTL for grain protein
content and wet gluten content. These last two parameters
were highly correlated with pasta Wrmness (R > 0.71) and
inversely correlated to cooking loss (R < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussedVecting pasta Wrmness and cooking
loss were detected on chromosomes 5A and 7B, and in both
cases they were overlapping with QTL for grain protein
content and wet gluten content. These last two parameters
were highly correlated with pasta Wrmness (R > 0.71) and
inversely correlated to cooking loss (R < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussedWrmness (R > 0.71) and
inversely correlated to cooking loss (R < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussedR < ¡0.37). The location
and eVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussedVect of other QTLs aVecting grain size and
weight, gluten strength, mixing properties, and ash content
are also discussed