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| Pollen
|
|||||
|---|---|---|---|---|---|
| Stigmas | At | Aa | Op | Cr | Si |
| At | +++ (4) | +++ (5) | +++ (5) | +++ (5) | ++ (5) |
| Aa | +++ (4) | +++ (4)* | ++ (7) | - (6) | - (6) |
Symbols indicate the extent of pollen hydration as measured by percent of grains that swell: +++, complete (>90%); ++, intermediate (1-90%); -, incomplete (<1%), averaged over (n) stigmas. Species are as indicated in Fig. 2. *Self-incompatible pollen was not hydrated (five trials).
