Table 1.

Segregation of the Revertant Phenotype in an Homozygous abi1-1 Background

Phenotypeb
CrossaGenerationABA ResistantABA Sensitive χ 2cP
Ler × abi1-1F1760
F271270.34>0.6
abi1-1R1 × abi1-1 F11080
F2124430.05>0.8
abi1-1R2 × abi1-1 F1460
F2108420.72>0.4
abi1-1R3 × abi1-1 F1270
F2143520.29>0.6
abi1-1R4 × abi1-1 F1220
F2129541.98>0.15
abi1-1R5 × abi1-1 F1490
F2107380.11>0.7
abi1-1R6 × abi1-1 F1230
F2126490.84>0.3
abi1-1R7 × abi1-1 F1260
F2101400.85>0.3
  • a In each case, the F1 seeds derived from the reciprocal cross were also all resistant to ABA (data not shown).

  • b Seeds were tested for their sensitivity to 3 μM ABA as described in Figure 1, and scored as ABA resistant or ABA sensitive by comparison to abi1-1 and Ler controls, respectively.

  • c Segregation data were evaluated with the chi-square goodness-of-fit test by using 3:1 segregation of the ABA-resistant phenotype as the null hypothesis. Chi-square values (χ2) and corresponding probabilities (P) are indicated.