Proceedings Volume 2010 (format .pdf) - SimpBTH

among the treatments in that study may be also a consequence of individualvariations.56Fig. 1. - Somatic embryo regeneration from root sections of spinach seedlings cultivated on MSmedium with 20 µM NAA and 5 µM GA 3 , exposed to short day (SD) and long day (LD) photoperiodfor 12 weeks. a) Frequency of regeneration, b) the mean SE number per regenerating explant, c) EFC(embryo-forming capacity). Thirty seedlings were used for the experiment and roots of each seedlingwere exposed to both photoperiods. Genotypes with no regeneration (121-124) are not presented.Data indicate the means (n = 20). T-test with dependent samples was used to asess SD/LD pairswithin each genotype. Symbols used to denote significance between SD/LD pairs: NS - notsignificant, * significant at 95% level, ** significant at 99% level, *** significant at 99.9% level.58