Table 1.
Quantification of Root Growth of the Wild Type, Three Salt-Hypersensitive Mutants, and Intermutant Crosses: Frequency of the Mutation in Each M2 Family
| Wild Type, Mutants, and Intermutant Crosses | Root Growtha (mm); Absolute ±sd |
Root Growth Percentage Compared with Wild Type |
Frequency of Mutantb |
χ2c |
|---|---|---|---|---|
| Wild type | 33 ± 4 | 100 | ||
| tss1-1 | 12 ± 3 | 36.4 | 36/7 | 1.75 |
| tss1-2 | 13 ± 2 | 39.4 | 32/10 | 0.032 |
| tss2 | 22 ± 4 | 66.7 | 38/8 | 1.42 |
| tss1-1 × tss1-2 | 11 ± 3 | 33.3 | 12/12 | |
| tss1-1 × tss2 | 32 ± 6 | 97.0 | 12/0 | |
| tss1-2 × tss2 | 34 ± 4 | 103.0 | 12/0 |
a
Root growth was determined 2 days after transfer of seedlings to 125 mM NaCl.
b
Frequency of segregation in M2 families: numerator, total number screened in a family or a cross; denominator, number of segregating mutants.
c
χ2 values represent the fit of the data to an expected 3:1 (wild type/mutant) phenotypic segregation (P > 0.05).