‘No grain is ever produced without water, but too much water tends to spoil the grain and inundation is as injurious to growth as dearth of water.’ (Narada Smriti XI, 19; circa 3000 BC). ‘Waterlogging’ is defined as a condition of the soil where excess water limits gas diffusion; while ‘waterlogging tolerance’ is defined as survival or the maintenance of high growth rates, biomass accumulation or grain yield under waterlogging relative to non waterlogged (usually drained soil) conditions (Setter and Waters, 2003).

This set of materials contains a range of reaction types, which may be viewed in the Source file.

Source: CIMMYT Wheat Germplasm Bank