REPRODUCTIVE BEHAVIOR OF DIPLOID AND ALLOTETRAPLOID AZALEODENDRONS
نویسندگان
چکیده
منابع مشابه
Reproductive Behavior of Diploid and Allotetraploid Rhododendron L. Fragrant Affinity
Wide hybridization can lead to recombination of diverse traits and creation of unique phenotypes, but the resultant hybrids are often sterile as is the case with the intersubgeneric hybrid Rhododendron L. Fragrant Affinity . Sterility in wide hybrids can either be genic or chromosomal; the latter may be overcome by induction of polyploidy, which can restore chromosome homology and fertility. Cy...
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Allotetraploid cotton species (Gossypium) belong to a 1–2 million year old lineage that reunited diploid genomes that diverged from each other 5–10 million years ago. To characterize genome evolution in the diploids and allotetraploids, comparative RFLP mapping was used to construct genetic maps for the allotetraploids (AD genome; n = 26) and diploids (A and D genomes; n = 13). Comparisons amon...
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Allopolyploid species are formed by genome doubling after hybridization between otherwise intersterile parental species. Allopolyploidy is the second most common speciation mechanism in land plants, after ordinary speciation. Here we describe and evaluate a Bayesian approach to the phylogenetic analysis of species relationships when both ordinary speciation and allopolyploidy are present. The a...
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Background: Gossypium thurberi is a wild diploid species that has been used to improve cultivated allotetraploid cotton. G. thurberi belongs to D genome, which is an important wild bio-source for the cotton breeding and genetic research. To a certain degree, chloroplast DNA sequence information are a versatile tool for species identification and phylogenetic implications in plants. Different ch...
متن کاملStructure and Distribution of Centromeric Retrotransposons at Diploid and Allotetraploid Coffea Centromeric and Pericentromeric Regions
Centromeric regions of plants are generally composed of large array of satellites from a specific lineage of Gypsy LTR-retrotransposons, called Centromeric Retrotransposons. Repeated sequences interact with a specific H3 histone, playing a crucial function on kinetochore formation. To study the structure and composition of centromeric regions in the genus Coffea, we annotated and classified Cen...
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ژورنال
عنوان ژورنال: HortScience
سال: 2006
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.41.3.497e