Breeding winter-maturing cauliflowers in south-west England

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Abstract
Significant improvements in yield, diameter, depth, and weight and a reduction in the percentage of unmarketable and small curds have been achieved in eight populations of winter-maturing ‘Roscoff’ cauliflowers after one generation of recurrent selection with progeny trials. Employing the breeding programme described, improvements in yield of between 18 and 47% of selected material over the original starting material have been obtained together with significant improvements in the other characters. These improvements have been confirmed in independent trials, emphasising the effectiveness of the breeding programme. Further improvements are expected in a second generation of selection since considerable useful variation remained for exploitation within the populations.

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