Pollen grains are shed at the 2-celled stage in over 60% of angiosperms; in others, the generative cell divides mitotically to form two male gametes before shedding (3-celled stage).
In oltre il 60% delle angiosperme, i granuli pollinici vengono rilasciati in questo stadio a 2 cellule. Nelle restanti specie, la cellula generativa divide mitoticamente per dare origine ai due gameti maschili prima che i granuli pollinici vengano rilasciati (stadio a 3 cellule).
| Text | In over 60 % of angiosperms, pollen grains are shed at this 2-celled stage. In the remaining species, the generative cell divides mitotically to give rise to the two male gametes before pollen grains are shed (3-celled stage). |
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