T. Turchetta et al., RELATIONSHIP BETWEEN ELECTROPHORETIC PATTERN OF STORAGE PROTEINS AND GLUTEN STRENGTH IN DURUM-WHEAT LANDRACES FROM TURKEY, Plant breeding, 114(5), 1995, pp. 406-412
A collection of 180 Triticum durum lines from Turkey and 22 Italian cu
ltivars were investigated by electrophoretic techniques and evaluated
for grain parameters such as protein content and sodium dodecyl sulpha
te (SDS)-sedimentation test. A total of 14 different patterns were obs
erved for high-molecular-weight (HMW) glutenin subunits resulting from
the combination of three alleles from the A genome and seven from the
B genome. Three new allelic variants, one at Glu-A1 and two at Glu-B1
, were found. Five different alleles were detected at the Gli-B1 locus
. Genotypes with the same allelic variant at Gli-B1 showed inconsisten
cy of composition in B group of low-molecular-weight (LMW) glutenin su
bunits. A total of 11 different B-subunit patterns were identified in
the material analysed. A substantial proportion (78%) of the variation
in gluten properties could be explained in terms of protein compositi
on, with the LMW glutenin subunits making the largest contribution (54
%). Results indicate that, in addition to Glu-B3 encoded proteins, var
iation at other loci coding for some intermediate and fastest B subuni
ts might also influence rheological properties.