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Analysis of albino embryo mutation frequency in M1 siliques of EMS mutated M1 parents is shown in the following table.

Albino embryos are rarely found in non-mutated seeds (D. Meinke, personal communication). P is the frequency of initial cells with albino embryo mutations and M is the mean number of albino embryo mutations per one initial cell, i.e. -ln(1-P). P and M were calculated as described by Mednik (Mednik, I.G., 1988. AIS 26:67-72).
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cat. no.		 No. M1 plants
examined for
albino embyros		 Total no. of
M1 siliques
examined		 No. of siliques
segregating for
albino embryos		 P M
M2E-01A-07 50 250 71 0.28 0.33
M2E-02-05 22 110 76 0.69 1.17
M2E-04-07 25 125 58 0.46   0.62
M2E-08A-02 30 121 48 0.40 0.51
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