Multiple and asymmetrical origin of polyploid dog rose hybrids (RosaL. sect.Caninae(DC.) Ser.) involving unreduced gametes
نویسندگان
چکیده
منابع مشابه
Polyploid Hybrids: Multiple Origins of a Treefrog Species
Hyla versicolor, a tetraploid treefrog, is reported to have originated via multiple hybridization events involving three diploid ancestors. Its complex reticulate history provides insights into the roles that polyploidy and hybridization can play in the origin of species.
متن کاملMicrosatellite analyses of artificial and spontaneous dogrose hybrids reveal the hybridogenic origin of Rosa micrantha by the contribution of unreduced gametes.
Dogroses are characterized by a unique meiosis system, the so-called canina meiosis, which facilitates sexual reproduction at odd-number ploidy. The mostly pentaploid somatic level of dogroses is restored by a merger of haploid sperm cells and tetraploid egg cells. We analyzed experimental hybrids between different dogrose species using microsatellites to determine pollen-transmitted alleles. T...
متن کاملThe origin of male gametes
References 1. Yokoyama, S. (2000). Molecular evolution of vertebrate visual pigments. Prog. Retin. Eye Res. 19, 385–419. 2. Dulai, K.S., von Dornum, M., Mollon, J.D., and Hunt, D.M. (1999). The evolution of trichromatic color vision by opsin gene duplication in New World and Old World primates. Genome Res. 9, 629–638. 3. Woodburne, M.O., Rich, T.H., and Springer, M.S. (2003). The evolution of t...
متن کاملProduction of Polyploids and Unreduced Gametes in Lilium auratum × L. henryi Hybrid
Intergenomic F1 hybrids between L. auratum x L. henryi and their BC1 progeny were investigated through genomic in situ hybridization technique (GISH) to determine their potential value in lily breeding. We confirmed that F1 intergenomic hybrids possessed a set of chromosomes (x=12) from both parents and that flowers of the F1 auratum × henryi hybrid showed an intermediate morphological phenotyp...
متن کاملCell fusion as the formation mechanism of unreduced gametes in the gynogenetic diploid hybrid fish
The gynogenetic diploid hybrid clone line (GDH) derived from red crucian carp (♀ RCC) × common carp (♂ CC) possesses the unusual reproductive trait of producing unreduced diploid eggs. To identify the mechanism underlying this phenomenon, we examined the structure, in vivo developmental process and in vitro dynamic development of the GDH gonad. In summary, compared with RCC and CC, GDH showed c...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 2016
ISSN: 0305-7364,1095-8290
DOI: 10.1093/aob/mcw217