Effects of high temperatures and drought during anthesis and grain filling period on wheat processing quality and underlying gluten structural changes

2017 ◽  
Author(s):  
Jasna Mastilović ◽  
Dragan Živančev ◽  
Eva Lončar ◽  
Radomir Malbaša ◽  
Nikola Hristov ◽  
...  
Keyword(s):  
High Temperatures ◽  
Structural Changes ◽  
Grain Filling ◽  
Processing Quality ◽  
Grain Filling Period

scholarly journals Is the Technological Quality of Old Durum Wheat Cultivars Superior to That of Modern Ones When Exposed to Moderately High Temperatures during Grain Filling?

Foods ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 778
Author(s):  
Francesco Giunta ◽  
Simona Bassu ◽  
Marina Mefleh ◽  
Rosella Motzo
Keyword(s):  
Durum Wheat ◽  
High Temperatures ◽  
Grain Filling ◽  
Field Trials ◽  
Wheat Cultivars ◽  
Protein Percentage ◽  
Technological Quality ◽  
Grain Filling Period ◽  
Genetic Pool ◽  
Sowing Period

The growing interest in old durum wheat cultivars, due to enhanced consumer attention on healthy, traditional products and low-input agricultural systems, partly relies on their different quality characteristics compared to modern cultivars. Nine Italian durum wheat cultivars from different breeding periods were compared in two late-sown (January) field trials in order to subject their grain filling period to high temperatures similar to those expected in the future. Late sowing moved anthesis forward by about 10 days and increased the mean temperature during grain filling by 1.3 °C compared to that obtained when using the common sowing period of November–December. In these conditions, old cultivars were on average less productive than modern ones (2.36 vs. 3.54 tons ha−1, respectively), had a higher protein percentage (13.8% vs. 11.1%), a lower gluten index (24.3% vs. 56.3%), and a lower alveographic W (baking strength) (64 vs. 100 J 10−4). The differences were partly associated to variations in the gliadins:glutenins ratio. It depended on the genotype whether the grain and semolina protein percentage and gluten strength compensated one another in terms of alveographic indices to give the dough a strength similar to that of the modern cultivars in the range of moderately high temperatures, which resulted from delayed sowing. Further studies aimed at exploring the genetic variability of quality traits in the large genetic pool represented by the several Italian old and intermediate durum wheat cultivars still available are therefore advisable.

Interpretation of grain quality results from wheat variety trials with reference to high temperature stress

1991 ◽  
Vol 42 (3) ◽  
pp. 325 ◽  
Author(s):  
CS Blumenthal ◽  
F Bekes ◽  
IL Batey ◽  
CW Wrigley ◽  
HJ Moss ◽  
...  
Keyword(s):  
Heat Stress ◽  
High Temperatures ◽  
Grain Quality ◽  
Wheat Variety ◽  
Grain Filling ◽  
High Temperature Stress ◽  
Loaf Volume ◽  
Dough Strength ◽  
Variety Trials ◽  
Grain Filling Period

Grain quality results for variety trials extending over 27 years (3 sites and 5 varieties) were compared with the temperature profiles during the grain filling period (56 days prior to harvest) to determine the effects on quality of high temperatures (>35�C) during this period of growth. Heat stress episodes have been frequent at two (Narrabri, N.S.W., and Turretfield, S.A.) of the three sites studied; spring temperatures were more moderate at the third site, Wongan Hills, W.A. There were highly significant (P< 0.01) correlations of heat stress (as hours above 35�C, during grain filling) with protein content (positive) and with grain yields (negative) at Narrabri for all varieties. In many combinations of site and variety, heat stress correlated negatively with loaf volume, and with dough strength (as Rmax, resistance to stretching with the Extensograph). Heat stress episodes in the Narrabri (N.S.W.) region in 1981 and 1982 gave further opportunity to examine these relationships. Results showed very clearly that high temperatures late in grain filling were associated with weaker dough properties (lower Rmax) in the resulting grain. These trends may form the basis of a predictive system by which to estimate crop quality and to interpret the results of variety trials.

Influence of Canopy Temperature (CT) During Grain-Filling Period on Yield and Effects of Several CT-Associated SSR Loci

2015 ◽  
Vol 41 (4) ◽  
pp. 548 ◽  
Author(s):  
Dong-Ling ZHANG ◽  
Hong-Na ZHANG ◽  
Chen-Yang HAO ◽  
Lan-Fen WANG ◽  
Tian LI ◽  
...  
Keyword(s):  
Canopy Temperature ◽  
Grain Filling ◽  
Ssr Loci ◽  
Grain Filling Period

Effect of PASP-KT-NAA on Leaf Senescence and Grain Filling Rate during the Grain-Filling Period in Different Temperature Zones

2013 ◽  
Vol 38 (9) ◽  
pp. 1698-1709
Author(s):  
Tian-Jun XU ◽  
Zhi-Qiang DONG ◽  
Jiao GAO ◽  
Chuan-Xiao CHEN ◽  
Liu JIAO ◽  
...  
Keyword(s):  
Leaf Senescence ◽  
Grain Filling ◽  
Filling Rate ◽  
Grain Filling Rate ◽  
Grain Filling Period
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