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Primary root growth pattern of two Opuntioideae species
| Determinate PR growth |
PR did not grow or grew only briefly |
Indeterminate PR growth |
PR inside the testa | ||||
|---|---|---|---|---|---|---|---|
| Species | No. of plants | PR length | No. of plants | PR length | No. of plants | PR length | No. of plants |
| O. puberula | 50 | 15–35 mm | 14 | 1–7 mm | 1 | >70 mm | 27 |
| O. streptacantha | 12 | 11–45 mm | 8 | Approx. 2 mm | 3 | >70 mm | – |
PR, primary root.
