Table IV.
ZmIpk-mum mutants are allelic to low-phytic acid mutant lpa2
| Seed Source | Genotype | Pi | PAP |
|---|---|---|---|
| mg g−1 | |||
| Mutant | PHP38-ZmIpk-mum3 | 0.84 ± 0.11 | 1.88 ± 0.10 |
| Mutant | PHJ90-lpa2–1 | 1.05 ± 0.01 | 2.01 ± 0.18 |
| Mutant | PHN46-lpa2–2 | 0.94 ± 0.14 | 1.23 ± 0.21 |
| F1 | PHJ90-lpa2–1/PHP38-ZmIpk-mum3 | 0.83 ± 0.31 | 1.52 ± 0.27 |
| F1 | PHN46-lpa2–2/PHP38-ZmIpk-mum3 | 0.90 ± 0.05 | 1.23 ± 0.12 |
| F1 | PHN46-ZmIpk/PHP38-ZmIpk-mum3 | 0.22 ± 0.03 | 2.19 ± 0.19 |
| Non-mutant | PHJ90 | 0.21 ± 0.02 | 2.42 ± 0.11 |
| Non-mutant | PHN46 | 0.18 ± 0.04 | 1.68 ± 0.09 |
| Non-mutant | PHP38 | 0.15 ± 0.01 | 2.40 ± 0.04 |
| Non-mutant | PHN46/PHP38 | 0.20 ± 0.02 | 2.16 ± 0.03 |
Homozygous ZmIpk-mum3 plants were crossed with the recessive lpa2-1 and lpa2-2 alleles. Ten F1 mature seeds from each ear were pooled and assayed for inorganic phosphate and phytic acid. The Pi and phytic acid are expressed as Pi P and phytic acid P (PAP), respectively. Values are means ± sd, n = 3 ears.