| Abstract
| - The P1 P2 F2 and F2 generations of the cross Cucumis sativus L. × C. hardwickil R. were grown in a randomized complete block design. Data were collected on spine color, bitterness, and nodes with plstillate flowers, for nodes 1-20. Using the parental and F1 ranges to define classes, percent gynoecious nodes segregated in a 1:2:1 ratto, and Is explained by segregation of alleles at the F locus (gynoecious sex expression). Bitterness segregated in a 3:1 ratio of bitter: nonbitter. Spine color, contrary to all previous reports, segregated In a 9:7 ratio of black: white spIne in the F2 which was confirmed with F3 data. The gene controlling bitterness was independent of the genes controlling spine color, or the F locus.
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