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plant reproduction
P van Rijckevorsel writes
Isn't there any number of fruit trees who need to have a 'male' planted somewhere near them for them to bear fruit? Maybe I can think of them when feeling a little less woozy. PvR Stewart Robert Hinsley schreef Apples for a start, though I wouldn't swear that it applies to all cultivars. Sample URL - http://www.ontarioprofessionals.com/trees.htm -- Stewart Robert Hinsley + + + Afraid not. This is an example of a different mechanism, viz self-incompatibility not based on mechanical principles. Self-incompatibilty in apples is linked to genetic make-up, which means that an orchard composed of a single clone (cultivar) won't produce fruit. For that a genetically different apple is necessary (a different cultivar). Not all apple cultivars are equally suitable as pollen producers. PvR |
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