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Post by khoomeizhi on Aug 17, 2015 4:17:41 GMT -5
if it's anything like the subglabrata/longifolia growing wild around here, it should be pretty tough. i've had plants in unburied small (4.5inch diameter) pots come back after -5F weather. with roots in the ground i bet they take quite a bit colder.
cletus - we bought a farm and moved this spring, so what with everything else, the crossing project is taking a year off. The tasty wild physalis (P. heterophylla?) is similarly good from seedlings..
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revi
gopher
Posts: 47
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Post by revi on Aug 18, 2015 11:04:47 GMT -5
I think you should study Michurin's process and apply that for interspecific breeding. Have you heard about Michurin and his methods?
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Post by cletus on Aug 18, 2015 20:56:02 GMT -5
Nicolas, thats a beauty -- have you tasted it yet? Do you know the provenance of your longifolia var. subglabrata? Longifolia has the largest range of north American physalis, IIRC. If your variety is deep purple I'm guessing it has some of that sweetness as in purple tomatillos?
Hybrids between different sections have failed in studies, but crosses within sections can have some level of initial fertility, especially within the closely related Laceolate/Viscosae sections. Peruviana is in the Lanceolatae section, so there are lots of potential species and populations to make a hardy cross, longifolia looks especially close (there are also virginiana, hederaefolia, heterophylla, sordida, caudella, lanceolata, pumila plus the V section mollis, viscosa, cinerascens, angusifolia, walteri). P. crassifolia may be the best candidate for a hardy tomatillo as Angulatae contains mostly annuals. I tried to post a photo of the physalis phylogenetic tree but theres not enough space.
In physalis there are many species/populations from different areas. Revi, do you have any suggestions from Michurinian selection theory when it comes to incorporating species from various geographical areas in crossing projects?
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revi
gopher
Posts: 47
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Post by revi on Aug 22, 2015 0:45:34 GMT -5
Revi, do you have any suggestions from Michurinian selection theory when it comes to incorporating species from various geographical areas in crossing projects? I like to suggest the "Posrednik(medium)". In this process, a middle species has been selected that will be related to both the species. After that, a cutting from the selected species has been put on the Posrednik and an interspecific breeding has been done between the cutting and the Posrednik. When seeds are available from that breeding, that can be breed with the other selected species. You can find out details about that in the book by Bakharev on Michurin. bulbnrose.x10.mx/Heredity/Michurin/Here are some original writings of Michurin and hope that can be helpful. |
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Post by darrenabbey on Aug 27, 2015 0:53:42 GMT -5
Revi, do you have any suggestions from Michurinian selection theory when it comes to incorporating species from various geographical areas in crossing projects? I like to suggest the "Posrednik(medium)". In this process, a middle species has been selected that will be related to both the species. After that, a cutting from the selected species has been put on the Posrednik and an interspecific breeding has been done between the cutting and the Posrednik. When seeds are available from that breeding, that can be breed with the other selected species. You can find out details about that in the book by Bakharev on Michurin. bulbnrose.x10.mx/Heredity/Michurin/Here are some original writings of Michurin and hope that can be helpful. The use of a bridge cross like this is done routinely, without the need for grafting one species to the bridge species first. Back on the topic of Physalis hybrids, you'd first need one species that will successfully cross to the target species to act as the bridge. I've found references to a couple successful crosses in the genus: I've heard vague descriptions of other crosses, but can't find any references to clarify their existence. |
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