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self-incompatible
(redirected from self-incompatibility)

   Also found in: Acronyms, Encyclopedia 0.02 sec.
self-in·com·pat·i·ble (slfn-km-pt-bl)
adj. Botany
Incapable of self-fertilization.

self-incom·pati·bili·ty n.

self-incompatible
adj
(Life Sciences & Allied Applications / Botany) (of a plant) incapable of self-fertilization because its own pollen is prevented from germinating on the stigma or the pollen tube is blocked before it reaches the egg cell
self-incompatibility  n


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Called gametophytic self-incompatibility, this plant system sabotages (male) pollen that's genetically similar to the female tissue of the plant.
A complete barrier of self-incompatibility, however, might invite occasional disaster if a plant does get surrounded by clones of itself.
So it's no surprise that protective self-incompatibility mechanisms have evolved many times in the plant kingdom (SN: 2/19/94, p.
 
 
 
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