Summary
F1 and F2 progenies from crosses of an early broccoli (Brassica oleracea var. italica L.) line with kohlrabi (B. oleracea var. gongyloides) indicated that days to flower bud maturity in annual segregates is quantitative and additive in inheritance. It appeared that the biennial kohlrabi parent strongly contributed genetic factors for late maturity. F1 plants of both crosses, 98% of F2 plants from early broccoli × kohlrabi, and 81% of the F2 plants from late broccoli × kohlrabi were annual in 1980. In 1986, 96% of early broccoli × kohlrabi F2 and 87% of late broccoli × kohlrabi F2 plants were annual. Kohlrabi stem enlargement showed a continuous range of expression in the F2 with some dominance of broccoli type. Few F2 plants were close to the kohlrabi parent in degree of stem enlargement.
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Baggett, J.R., Kean, D. Segregation for heading date and stem enlargement in kohlrabi x broccoli crosses. Euphytica 42, 171–176 (1989). https://doi.org/10.1007/BF00042629
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DOI: https://doi.org/10.1007/BF00042629