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diploid species

Listing 1 - 10 from 91 for diploid species

Glider on Lilies
... are nearly always unsuccessful if the parent species differ by a greater number of chromosomes. This doesn't hold true in plants, and two diploid species can be manipulated to produce tetraploid offspring. In the case of lillies, as was mentioned earlier, this tetraploid plant may be sterile where its diploid counterpart would ...
ethnobotany.yage.net

HansaX#32
... the suggestion that she is not a hybrid but a sport of R. rugosa since diploid species are normally self sterile. Percy M. Wright of Wilkie, Saskatchewan wrote in The American Rose ...
home.neo.rr.com

Can North American rose hybridizers safely use pollen from PNRSV infected roses
... bush. See footnote (12). The diploid species were all highly self-sterile. None of the 23 diploid specimens exhibited over 4 % fertility and ... with pollen from another plant of the same species and found that the diploid group was 50 times more cross-compatible than ... were no more self-compatible than the diploid group. Unfortunately, only two of the species studied by Thomas were also studied by ...
home.neo.rr.com
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Jean-Pierre Bourgin : a tribute
... been widely exploited afterwards for the production of haploids in a variety of plant species. As haplo-diploidisation methods allow to obtain fully homozygous lines from haploid plants ... to plant cells. He first adopted Nicotiana plumbaginifolia as a model species for cellular genetics, this strictly diploid species being much more convenient for the isolation of recessive mutations compared to ...
www-ijpb.versailles.inra.fr

Propagating Tips
... great majority of species roses are diploid (14 chromosomes); the great majority of modern garden roses and European heritage roses are tetraploid (28 chromosomes). Examples of diploid species are R. rugosa, R. multiflora, R. wichuraiana, R. blanda, R. cinnamomea, and R. moschata . Notable exceptions: the tetraploids R. carolina, R. spinosissima , and the species ...
www.ars.org

Fig Interest Group
... species F. carica (the common fig) and F. sycamorus (the sycamore fig of Egypt). F. carica is a diploid species with a basic chromosome number of x = 13. Hybrids are possible with a few other species including F. palmata, F. pseudo-carica and F. pumila. The fruit of all Ficus species ... . Overwintering Figs Ficus carica is the northernmost species in the Ficus genus. Figs that ...
www.nafex.org

Magnolia fraseri Walt
... alleghaniensis), and eastern hophornbeam (Ostrya virginiana) (2,3,4,6,8). Elsewhere, commonly associated species are: sweet birch (Betula lenta), hickories (Carya spp.), American chestnut (Castanea dentata) (as sprouts ... a diploid species with extensive ecotypic variation should have a wider range than a polyploid derived from it; how ever, cucumbertree has the widest range of all three species. No ...
www.na.fs.fed.us

The Breeders Talk: Dr. Gustav A. L. Mehlquist, 1975
... species. We see the same difference when we compare the American species of azaleas with the Asiatic species. The American species ... diploid species. Furthermore, they tend to be almost sterile. It is most difficult to obtain any more than 60% seed set in a newly made autotetraploid compared to a diploid. So what is logical to assume here is that two species, both diploid 2n = 16, ...
www.rosebay.org

Rose Species Profile Rose bracteata
... rose is an unusual and valuable evergreen climbing species rose native to China. Hybridizers are now ... found on the plants. R. bracteata is a diploid with 2 sets of 7 chromosomes (2n=14) ... species: Rosa clinophylla - A species closely related to R. bracteata was introduced from India before 1817. This species is also native to Bengal, Nepal and China. Flowers are large and pure white. This species ...
www.olyrose.org

Rhipsalis baccifera
... as provisional only. As currently circumscribed it is the most widespread of all cactus species in nature and is divisible into various subspecies. subsp. baccifera DISTRIBUTION. Neotropics including the ... thus far are tetraploid in chromosome number (2n = 44), while South American populations are diploid (2n = 22). Drawing of cassythoides, considered to belong under ssp baccifera. Rh baccifera subsp ...
www.rhipsalis.com




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