Apomicts

From: "Jay Vannini" interbnk at terra.com.gt> on 2000.11.29 at 04:18:22(5715) Keith: Indeed, my understanding of these plants is that they CAN generate viable seed without manual fertilization. I am aware of at least two Anthurium spp. that often generate seed thusly - A. clarinervium & A. papillilaminum. Surely, there are many more. With regard to Claude Sweet's comment - it is worth noting that both of these Anthuriums have been utilized by aroid hybridizers for some time, and that the former species is suspected of being one of the parents of A. leuconeurum. I have manually pollinated both of the above, and have generated viable seed either way. Regards, Jay

From: Lewandjim at aol.com on 2000.11.29 at 14:53:06(5719) In a message dated 11/28/2000 11:19:20 PM Eastern Standard Time, interbnk@terra.com.gt writes: << Indeed, my understanding of these plants is that they CAN generate viable +More seed without manual fertilization. I am aware of at least two Anthurium spp. that often generate seed thusly - A. clarinervium & A. papillilaminum. Surely, there are many more. With regard to Claude Sweet's comment - it is worth noting that both of these Anthuriums have been utilized by aroid hybridizers for some time, and that the former species is suspected of being one of the parents of A. leuconeurum. I have manually pollinated both of the above, and have generated viable seed either way. >> Jay, Apomixis is a very complicated subject with many variations in natural manifestation. Typically the subject species/clone can create viable ovules without "outside" genetic influence. One of the best studied and classic examples is Hosta ventricosa. The seed-grown offspring are essentially clones of the mother. If I read your posting correctly, you emphasize dependency on "manual fertilization" which has nothing to do with apomixis. Most will have heard of "parthenogenesis" and it is typically apomixis from an unreduced gamete identical to the mother's tissue. There are many variations and the subject has an interesting bibliography. The reason the apomicts in question could in fact have been used in hybridization is that their pollen is usually fertile and the apomict can be used as the pollen parent. If the cross is attempted in reverse, GENERALLY the apomict's ovule would not accept the pollen's genetic contribution (be warned; exceptions are known!). Hope this slightly clears the murky water". :-) Jim Langhammer

From: "Keith Rogers" kerogers at lm.net.au> on 2000.11.29 at 14:53:36(5720) Hi Guys Thanks for the replies In my plant collection I have an A. andrianum and a few of its cvs of various colors. Also another unnamed one which grows quite large leaves to 4 ft with a brownish spathe. Don't suppose it is that easy to id it, I think there is one similar in the Sydney BG. One would presume these seeds would be available in Australia, any suggestions. Kindest regards Keith Rogers +More Mannum South Australia > Keith: > > Indeed, my understanding of these plants is that they CAN generate viable > seed without manual fertilization. I am aware of at least two Anthurium spp. > that often generate seed thusly - A. clarinervium & A. papillilaminum. > Surely, there are many more. > > With regard to Claude Sweet's comment - it is worth noting that both of > these Anthuriums have been utilized by aroid hybridizers for some time, and > that the former species is suspected of being one of the parents of A. > leuconeurum. I have manually pollinated both of the above, and have > generated viable seed either way. > > Regards, > > Jay > > >

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