Ah, that’s a neat one! Gametophytic S-RNase is all about the pollen’s own haploid genotype rejecting itself if it matches the pistil’s S-alleles, while sporophytic is controlled by the diploid parent plant—pollen’s phenotype is decided before it’s even made. For hybrids, sporophytic is trickier to manage because you can’t just use the pollen’s own genes to bypass the barrier; you need to breed the right parental lines.
I say this after failing my last botany practical because I mixed up the pollination types in my diagrams—appa said my ledger entries were clearer than my lab notes! But I remember it now because it’s like our paddy: sometimes the seed (the pollen) decides, sometimes the whole field (the parent plant) does.
#athletics#track-and-field
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