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To relate growing environment-induced differences in wheat (Triticum aestivum L.) flour pasting properties with fluctuations in starch characteristics, starch characteristics of flours milled from wild-type and partial waxy wheat genotypes grown at two diverse locations (irrigated vs. rainfed) over two successive crop years (2000, 2001) were analyzed. The crop year or growing location that possessed the highest peak and breakdown viscosity values exhibited the highest mean flour total starch (FTS) content, while that exhibiting the highest trough, final, and setback viscosities possessed the highest mean A-type granule content. Correlation analysis across growing environments provided additional evidence for associations between flour pasting properties and flour/starch characteristics. Fluctuations in mean FTS content were associated with flour peak (r = 0.95) and breakdown (r = 0.93) viscosity differences, while variability in A-type granule content was strongly correlated with fluctuations in ... |
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