Association mapping of malting quality traits in UK spring and winter barley cultivar collections.

Whilst there has been highly significant genetic progress in the spring two row gene pool since the introduction of Triumph in 1980, and prior to 2000 (Fig. 2 ) ( β = 0.16; p = 0.001; R 2 = 0.48), the rate of progress since 2000 is non-significant ( β = − 0.06; p = 0.245; R 2 = 0.04) with a large scattering of the datapoints, indicating that breeding progress for the character has stalled or that the maximum attainable phenotype has been reached.

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