Around what decade were purple Brussels sprouts reportedly developed by crossing green sprouts with red cabbage?
Answer
Early 1940s
The origin of the purple Brussels sprout coloration is rooted in agricultural history dating back several decades. These colorful miniature cabbages are the result of intentional hybridization efforts, specifically crossing the traditional green Brussels sprouts variety with red cabbage. This cross-breeding process successfully introduced the genes responsible for the purple pigmentation. The successful development and introduction of this distinct variety occurred in the early 1940s, marking the beginning of their presence in cultivation, long before modern agricultural techniques became widespread, showing an established history rather than a recent novelty.
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