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Type: Journal article
Title: Wheat grain preharvest sprouting and late maturity alpha-amylase
Author: Mares, D.
Mrva, K.
Citation: Planta, 2014; 240(6):1167-1178
Publisher: Springer Berlin Heidelberg
Issue Date: 2014
ISSN: 0032-0935
Statement of
Daryl J. Mares, Kolumbina Mrva
Abstract: Preharvest sprouting (PHS) and late maturity α-amylase (LMA) are the two major causes of unacceptably high levels of α-amylase in ripe wheat grain. High α-amylase activity in harvested grain results in substantially lower prices for wheat growers and at least in the case of PHS, is associated with adverse effects on the quality of a range of end-products and loss of viability during storage. The high levels of α-amylase are reflected in low falling number, the internationally accepted measure for grain receival and trade. Given the significant losses that can occur, elimination of these defects remains a major focus for wheat breeding programs in many parts of the world. In addition, the genetic, biochemical and molecular mechanisms involved in the control of PHS and LMA as well as the interactions with environmental factors have attracted a sustained research interest. PHS and LMA are independent, genetically controlled traits that are strongly influenced by the environment, where the effects of particular environmental factors vary substantially depending on the stage of grain development and ripening. This review is a summary and an assessment of results of recent research on these important grain quality defects.
Keywords: Triticum; Seeds; Germination; Quantitative Trait Loci; alpha-Amylases; Plant Dormancy
Rights: © Springer-Verlag Berlin Heidelberg 2014
RMID: 0030010251
DOI: 10.1007/s00425-014-2172-5
Appears in Collections:Agriculture, Food and Wine publications

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