Is any attempt being made to differentiate between apomyxy and cleistogamy here? T > Date: Tue, 15 Jun 2010 08:52:49 -0700 > From: rakkasanbarnett@gmail.com > To: pbs@lists.ibiblio.org > Subject: Re: [pbs] apomixis; was RE: Plants of hybrid origin > > Many or most of the cactus species are apomicticm. Flowers do not always > occur at the same time or the plants are spread far apart. Sclerocactus and > pediocactus I grow are completely closed in with no pollinators and they > still make seeds. With pollination the plants produce way more seed but its > just their way of keeping the species alive. So apomixity is apart of cactus > life. > > On Jun 15, 2010 7:08 AM, "Jim McKenney" <jimmckenney@jimmckenney.com> wrote: > > The term apomixis and by extension the concept of apomictic species have > come up in our discussion of plants of hybrid origin. > > > > Since plants which arise from apomixis are said to be genetically identical > to the parent from which they derive, they form, in effect, clones. > > > > Incidentally, this term apomixis antedates any technology which would allow > one to prove what the term purports to assert: that the entities in question > are in fact genetically identical. Until very recently there was no reason > to regard any claim of apomixis as anything but a hypothetical assertion. > Even now, has a comparison of the entire genomes of two entities been done? > > > > > >From a taxonomic point of view, I assert that the so-called "microspecies" > formed by apomictic populations are misclassified; they have been classified > at rank species, but they should be classified at rank Individuum. They > really are no different than the clones of garden daffodils or tulips. > > > > Jim McKenney > > jimmckenney@jimmckenney.com > > Montgomery County, Maryland, USA, 39.03871º North, 77.09829º West, USDA zone > 7 > > My Virtual Maryland Garden http://www.jimmckenney.com/ > > BLOG! http://mcwort.blogspot.com/ > > > > Webmaster Potomac Valley Chapter, NARGS > > Editor PVC Bulletin http://www.pvcnargs.org/ > > > > Webmaster Potomac Lily Society http://www.potomaclilysociety.org/ > > > > > > > > > > > > > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/