000 01826nab a22003137a 4500
001 G99294
003 MX-TxCIM
005 20190315200535.0
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024 8 _ahttps://doi.org/10.1016/j.jcs.2005.01.005
040 _aMX-TxCIM
100 1 _aDon, C.
245 0 0 _aHeat stress and genotype affect the glutenin particles of the glutenin macropolymer-gel fraction
260 _c2005
520 _aGenetic and environmental factors that affect the formation of glutenin macropolymer (GMP) particles were investigated by growing Lance 5+10, Lance 2+12, Warigal 5+10 and Warigal 2+12 lines under widely differing temperature regimes in greenhouse conditions. The GMP characteristics and mixing properties of flour extracted from mature wheat kernels were systematically studied. The amount of GMP is more sensitive to growing conditions than protein quantity. With the exception of severe heat stress conditions, 5+10 varieties produce larger glutenin particles than 2+12 varieties. The HMW/LMW ratio of GMP is lowered by heat stress, but glutenin particles become larger. In heat stress effects on dough mixing properties, glutenin particle size is more relevant than GMP quantity for dough development time; and GMP quantity is more relevant for band-width at peak resistance. A hyperaggregation model is used to explain how heat stress controls glutenin particle formation.
546 _aEnglish
593 _aLucia Segura
595 _aRPC
650 1 0 _aDough mixing
650 1 0 _aGMP
650 1 0 _aGMP-particles
650 1 0 _91971
_aHeat stress
_gAGROVOC
700 1 _aHamer, R.J.,
_ecoaut.
700 1 _aLookhart, G.,
_ecoaut.
700 1 _aMacRitchie, F.,
_ecoaut.
700 1 _aNaeem, H.,
_ecoaut.
773 0 _tJournal of Cereal Science
_gv. 42, no. 1, p. 69-80
942 _cJA
999 _c30691
_d30691