Germination responses

Data from a germination experiment with freshly harvested seeds of crosses within Silene dioica (L.) Clairv., S. latifolia Poiret and of different hybrid classes between these species under three conditions, a dormancy breaking treatment (OPT), and conditions simulating diurnal temperature profiles during the seeding time of S. dioica (SD) or S. latifolia (SL, see methods). Column names: name, unique name of each seed lot, collected on the same day; ct4, cross type (SL: Silene latifolia, SD: Silene dioica, F1: first-generation hybrid, F2: second-generation hybrid, F3: third-generation hybrid, BC-SD: backcross toward SD, BC-SL: backcross toward SL [see also Table S2, Figure S1]); No, cross identity (see Table S2); Date: seed collection date as days from the start of the experiment; OPT, SD, SL, percentage of seeds germinating under OPT, SD, and SL conditions; weight, weight per seed in g (measured for entire seed lot before splitting), no.OPT, no.SD, no.SL, number of hard (likely viable) seeds which had not germinated; dead.OPT, dead.SD, dead.SL, number of dead (soft) seeds under OPT, SD, and SL conditions; TOTAL.sum, total number of seeds per seed lot (OPT + SD + SL); TOTAL.min, minimum number of seeds per trial (petri dish); comment, information on data pooling where seed number per trial was < 15 (see methods).