Comparison of low- and high molecular-weight wheat glutenin allele effects on flour quality |
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Authors: | C Luo W B Griffin G Branlard D L McNeil |
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Institution: | (1) Soil, Plant and Ecological Sciences Division, PO Box 84, Lincoln Unviersity, Canterbury, New Zealand, NZ;(2) Crop and Food Research Ltd, Lincoln, Private Bag 4707, Christchurch, New Zealand, NZ;(3) INRA, Station d’Amelioration des Plantes, 63039, Clermont-Fd, France, FR |
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Abstract: | Five crosses were made, using a set of New Zealand wheat cultivars, to measure the effect of glutenin allele differences on
baking quality parameters. The alleles involved were: Glu-A1 (2*, 1 and n), Glu-D1 (5+10, 2+12), Glu-A3 (c, d and e), Glu-B3 (Sec-12, Sec-13, b and g), Glu-D3 (a and b). The allelic variation of F3 individual plants was identified by SDS-PAGE, and plants with the same HMW-GS and LMW-GS patterns were grouped. Quality parameters
were then measured on the grouped F4 bulks. Quality parameters measured for this study were wholemeal flour protein content (WFP), grain hardness (HAR), SDS sedimentation
volume (SED), Pelshenke time (PEL), mid-line peak value (MPV) and the mid-line peak time (MPT) of a mixograph. The results
showed there were significant quality differences within most populations associated with the possession of a particular allele,
reaching magnitudes of up to 42% for the range between populations. Most glutenin allelic comparisons showed significant differences
for at least one of the resultant measured quality parameters. Allelic differences of Glu-A1 significantly influenced all characters except MPT, with the null allele apparently inferior; possession of 5+10 at Glu-D1 significantly increased Pelshenke time and SED volumes relative to allele 2+12; WFP, SED and MPV were significantly affected
by the Glu-A3 alleles tested. Glu-B3 alleles significantly affected all characters except hardness and the Glu-D3 alleles tested significantly affected all characters other than hardness and SDS sedimentation volume.
Received: 8 June 1999 / Accepted: 25 July 2000 |
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Keywords: | HMW-GS LMW-GS Quality parameters Mixograph Recombinant inbred lines (RILs) |
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