Genetic control of thermoinhibition tolerance in lettuce seeds

Abstract The objective of this work was to assess the genetic control tolerance thermoinhibition in lettuce (Lactuca sativa) seeds. Seeds F1, F2, and F2:3 generations derived from cross between cultivars Everglades (tolerant thermoinhibition) Verônica (sensitive were used, besides seeds parents. Seed germination tests conducted a completely randomized design, with four replicates each parent, eight 26 progenies. mean F2 population considered as sample is attributed one or few genes. additive effects are more expressive than nonadditive ones, narrow-sense heritability relatively high, allowing prediction success selection.