Plant Siblings

This just in: plants are nicer to their sibs than to other plants. From LiveScience.com:

After plants are potted, roots branch out to suck up water and nutrients. But when several plants of the same species are potted together, things get a little nasty: Each plant flexes its muscles, so to speak, by extending its root growth to try and snatch up valuable resources.

Unless, that is, the plants are siblings—each having come from the same mother plant—in which case they become very accommodating, allowing each other ample root space.

The implications of this news are obviously staggering. I'm not sure exactly how, but it feels quite significant. Did you know plants had siblings?