Table 1.
Pearson’s correlations among root and shoot traits of 11 Egyptian rice cultivars under well-watered conditions
| Max. root depth | Large LRBD | Small LRBD | Large LRL | Small LRL | Cross section area | Stele area | Median MV area | Total MV area | MV No. | Theor. cond. | Shoot dry biomass | Tiller No. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. root depth | 1 | ||||||||||||
| Large LRBD | −0.135 | 1 | |||||||||||
| Small LRBD | −0.187 | 0.192 | 1 | ||||||||||
| Large LRL | 0.245 | 0.208 | −0.276 | 1 | |||||||||
| Small LRL | −0.183 | 0.063 | −0.111 | 0.733** | 1 | ||||||||
| Cross section area | 0.484** | 0.017 | −0.081 | 0.173 | 0.068 | 1 | |||||||
| Stele area | 0.414* | −0.271 | −.538** | 0.275 | 0.205 | 0.563** | 1 | ||||||
| Median MV area | 0.224 | −0.008 | 0.303 | 0.145 | 0.259 | 0.342 | 0.267 | 1 | |||||
| Total MV area | 0.548** | 0.020 | −0.364* | 0.346* | 0.170 | 0.839** | 0.630** | 0.080 | 1 | ||||
| MV No. | −0.398* | 0.279 | 0.201 | 0.349* | 0.504** | −0.199 | −0.003 | 0.237 | −0.280 | 1 | |||
| Theor. cond. | 0.023 | 0.109 | 0.395* | 0.207 | 0.337 | 0.137 | 0.191 | 0.871** | −0.120 | 0.631** | 1 | ||
| Shoot dry biomass | 0.624** | −0.399* | −0.475** | 0.275 | 0.034 | 0.616** | 0.568** | 0.006 | 0.752** | −0.270 | −0.161 | 1 | |
| Tiller No. | 0.259 | −0.436* | −0.302 | 0.200 | 0.339 | 0.456** | 0.664** | 0.502** | 0.378* | −0.016 | 0.372* | 0.451** | 1 |
LRBD Lateral root branching density, LRL Lateral root length, MV Metaxylem vessel, Theor. cond Theoretical conductance, Max Maximum, and No. Number significance indicated by * p ≤ 0.05; ** p ≤ 0.01