Developmental Timing of DNA Elimination Following Allopolyploidization in Wheat
نویسندگان
چکیده
منابع مشابه
Developmental timing of DNA elimination following allopolyploidization in wheat.
The elimination of DNA sequences following allopolyploidization is a well-known phenomenon. Yet, nothing is known about the biological significance, the mechanism, or the precise developmental timing of this event. In this study, we have observed reproducible elimination of an Aegilops tauschii allele in the genome of the second generation (S2) of a newly synthesized allohexaploid derived from ...
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The timing and rate of genomic variation induced by allopolyploidization in the intergeneric wheat-rye (Triticum spp. - Secale cereale L.) hybrid triticale (x Triticosecale Wittmack) was studied using amplified fragment length polymorphism (AFLP) analyses with 2 sets of primers, EcoRI-MseI (E-M) and PstI-MseI (P-M), which primarily amplify repetitive and low-copy sequences, respectively. The re...
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The wheat group has evolved through allopolyploidization, namely, through hybridization among species from the plant genera Aegilops and Triticum followed by genome doubling. This speciation process has been associated with ecogeographical expansion and with domestication. In the past few decades, we have searched for explanations for this impressive success. Our studies attempted to probe the ...
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Polyploid organisms contain a number of chromosomes that is some multiple of x (basic chromosome number) greater than the 2 x content of related diploid species. Winkler (1916) introduced the term in a study of vegetative grafts in Solanum, when he discovered tetraploid plants regenerated from callus tissue on cut stems of diploid S. nigrum . Winge (1917) observed that interspecific hybrids giv...
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ژورنال
عنوان ژورنال: Genetics
سال: 2010
ISSN: 1943-2631
DOI: 10.1534/genetics.110.116178