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Table 4 F2 plants from selfing of the F1 progeny resulting from the cross JI 2822 × JI 3020

From: Growth, seed development and genetic analysis in wild type and Def mutant of Pisum sativum L

  Genotype Observed number (O) Expected number (E) Difference (O-E) (O-E)2/E
3: 1 Def/Def 59 60 --1 0.01666
  Def/def - - - -
  def/def 21 20 1 0.05
  Total 80 80 0 0.0666 = χcalc2
1: 2: 1 Def/Def 47 20 27 36.45
  Def/def 12 40 --28 19.60
  def/def 21 20 1 0.05
  Total 80 80 0 56.1 = χcalc2
  1. * 3:1 Observed values do not differ significantly from expected value at 1 degree of freedom and 0.05 level of significance
  2. * 1: 2: 1 Observed values differ significantly from the expected value at 1 degree of freedom and 0.05 level of significance