TABLE 3.
Characters observed and calculated in this study
| Observed characters | Calculated characters |
|---|---|
| No. of kernels germinating (per family) | Proportion of kernels germinating (per family) |
| 6-wk height (cm to top of visible leaf collar) | Proportion of 14-wk height at 6 wk |
| 8-wk height (cm to top of visible leaf collar) | Proportion of 14-wk height at 8 wk |
| 10-wk height (cm to top of visible leaf collar) | Proportion of 14-wk height at 10 wk |
| 12-wk height (cm to top of visible leaf collar) | Proportion of 14-wk height at 12 wk |
| 14-wk height (cm to top of visible leaf collar) | Ear height (ear branch node height + ear branch length) |
| Days postplanting to top of ear shoot emergencea (eo) | Ear length as a proportion of mature height |
| Days postplanting to top of leaf collar emergencea (tlc) | Shank length as a proportion of mature height |
| Days postplanting to first silk emergence (so) | No. of leavesb |
| Days postplanting to first pollen shed (ps) | Days between eo and tlc (eo → tlc) |
| Fertility (fertile, semifertile, sterile; see text) | Days between eo and ps (e → ps) |
| No. of primary tassel branches | Days between eo and so (eo → so) |
| No. of leaves above the top ear node | Days between tlc and ps (tlc → ps) |
| No. of leaves below the top ear nodeb | Days between tlc and so (tlc → so) |
| No. of tillers | Days between ps and so (ps → so) |
| No. of nascent ear branchesb | eo as a proportion of tlc (eo/tlc) |
| No. of mature ears | eo as a proportion of ps (eo/ps) |
| Husk blade length (cm; longest at time of silk emergence) | eo as a proportion of so (eo/so) |
| Height of ear branch node (cm) | tlc as a proportion of ps (tlc/ps) |
| Ear length (cm) | tlc as a proportion of ps (tlc/ps) |
| Ear branch (shank) length (cm to base of mature ear) | ps as a proportion of so (ps/so) |
| Plant lodging (none, <45°, >45°) | Proportion of normal kernels |
| Ear tip emergent from husk (+/−) | Proportion of mildly defective kernelsc |
| No. of normal kernels | Proportion of severely defective kernelsc |
| No. of mildly defective kernelsc | No. of kernels on the top ear |
| No. of severely defective kernelsc | Proportion of normal kernels on parent ear |
| No. of normal kernels on parent ear | Proportion of mildly defective kernelsc on parent ear |
| No. of mildly defective kernelsc on parent ear | Proportion of severely defective kernelsc on parent ear |
| No. of severely defective kernelsc on parent ear | No. of kernels on parent ear |
Underlining indicates data that are presented and discussed in this article. Italic indicates data that are discussed in this article but presented in supplemental figures.
a
From under the ligule at time of top ear silk emergence.
b
Above the sixth node (see Figure 2).
c
Defective in endosperm production: mildly defective kernels had at least some pericarp wrinkling, and severely defective kernels had no smooth (attached) pericarp.