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Showing 1 to 20 of 22 for “"interspecific hybridization"”.
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Interspecific Hybridization Among Black Basses (Micropterus spp.) in the Chattahoochee River, Columbus Georgia
<p>Interspecific hybridization can lead to the evolution of a new hybrid species or extinction of parental species due to competition or excessive backcrossing, When parental populations differ in abundance, hybrids tend to backcross more frequently with the more abundant parent, resulting in …
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Hybridization Between Amaranthus Tuberculatus and Amaranthus Hybridus
Interspecific hybridization can be thought of as a potential adaptive mechanism by which favorable alleles may be transferred among related species. Studies have shown that weedy Amaranthus species are capable of interspecific hybridization, and hybridization may foster the evolution of herbicide …
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The Role of Carotenoid Cleavage Dioxygenase 4 in Flower Color of the Allopolyploid Brassica napus
<p>Allopolyploids are formed by interspecific hybridization and whole genome duplication, with the resulting organism contains multiple distinct subgenomes in one nucleus. Subgenomic interactions result in massive genetic and epigenetic reconstruction, contributing to variable phenotypic traits …
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Chloroplast DNA phylogenetics of the North American chestnuts and chinquapins (Castanea Mill., Fagaceae)
… dentata in one sympatric site, suggesting past hybridization and chloroplast capture. Surprisingly, the cpDNA phylogeny did not agree with previous taxonomic treatments. The inability to distinguish between deep coalescence and interspecific hybridization as the causes of haplotype sharing makes …
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Phylogenetic relationships among beetles within the genus Onymacris (Coleoptera : Tenebrionidae) : a phenetic versus cladistic approach
… proved to be useful in identifying possible interspecific hybridization. Two monophyletic subgenera are recognized. The subgenus Melanonymacris comprises O. lobicollis, O. rugatipennis, O. paiva, O. boschimana, O. multistriata, O. hottentota and O. plana, all of Which have black elytra. The …
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Determining the Fate of Hybridized Genomes in the Allopolyploid Brassica napus
… of flowering plants. Allopolyploid forms through interspecific hybridization and whole genome duplication. While allopolyploids may display increased vigor relative to their progenitors, they can also face challenges to fertility following hybridization. Genetic changes in allopolyploids result …
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Hybridization in Ants
<p>Interspecific hybridization is a relatively common occurrence within all animal groups. Two main factors make hybridization act differently in ants than in other species: eusociality and haplodiploidy. These factors serve to reduce the costs of interspecific hybridization in ants while …
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Mentha (Lamiaceae) Phylogenetic Analysis Using Chloroplast TRNL-TRNF and Nuclear Ribosomal DNA ITS Sequences
… in base chromosome number, and frequent interspecific hybridization. Our objectives were to test the monophyly of Mentha and each of its traditionally recognized sections, assess phylogenetic relationships of the Mentha species, test hypotheses of hybridization for the putative stabilized …
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Evolutionary biology of the Armillaria mellea species complex
DNA-DNA hybridization experiments were used to examine the genetic variation that has accumulated with the North American Biological Species (NABS) of Armillaria. Forty strains including nine of the ten NABS and A. tabescens were used in this study. The normalized percent hybridization values …
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Unlocking the genetic diversity of the undomesticated rice relative Oryza longistaminata
… programs is a breeding barrier which complicates interspecific hybridization with O. sativa, as well as the expense and difficulty of identifying which O. longistaminata accessions carrying useful genes. Breeding programs also rely on thorough ex-situ conservation of O. longistaminata, which …
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Isolation in Tragopogon (Compositae)
… to determine the role and significance of interspecific hybridization in speciation within the genus. Field observations indicate the common occurrence of interspecific hybrids between T. pratensis, a yellow-flowered species and T. porrifolius, a species with purple flowers. The occurrence …
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Conservation genetics of sauger in the upper Missouri River drainage
Hybridization with non-native walleye may play a substantial role in sauger declines throughout the upper Missouri River drainage of Montana and Wyoming. I identified 11 microsatellite loci to detect interspecific hybridization and describe the genetic population structure of sauger. Two major …
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Conservation genetics of sauger in the upper Missouri River drainage
Hybridization with non-native walleye may play a substantial role in sauger declines throughout the upper Missouri River drainage of Montana and Wyoming. I identified 11 microsatellite loci to detect interspecific hybridization and describe the genetic population structure of sauger. Two major …
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Nuclear and cytoplasmic genetic variation in Picea: DNA markers for evaluating past migration, introgression and evolutionary history
… detected in black spruce was attributed to interspecific hybridization, estimated to have taken place during the Holocene epoch (≥4000 years ago). White spruce mitochondrial haplotypes detected in multiple black spruce populations indicated that unidirectional introgressive hybridization …
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The Significance of Inter- and Intraspecific DNA Content Variation in Agriculturally Important Species
… the genus Cucurbita was examined both intra- and interspecifically. Flow cytometry was used to calculate the estimates of total nuclear DNA content for the selected pumpkin species ranged from 0.92 pg for a giant variety, to 1.14 pg for a miniature variety. There was also a significant positive …
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Genomic Reconstruction of the Domestication History of Sinningia speciosa (Lodd.) Hiern, and the Development of a Novel Genotyping Approach
… contributions from multiple founder populations, interspecific hybridization, chromosomal introgressions, and polyploidization events that occurred hundreds to thousands of years earlier. Such intricate origins complicate the systematic study of the sources of phenotypic variation. The analysis of …
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Genetic marker analysis of three major carbohydrates in soybean seeds
… inbred lines (RIL) were developed from the interspecific hybridization between a Glycine max breeding line (V71-370) and a Glycine soja plant introduction (PI407162). The 308 RILs, each parent, and one cultivar were arranged in a randomized complete block design with two replications and …
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Developmental and Expression Evolution in C3 and C4 Atriplex and their Hybrids
Maintaining global food security amidst climate change requires improved photosynthetic efficiency in C3 crops. Above 30°C, photosynthesis and yield are reduced 30-50% by photorespiration. The C4 photosynthetic pathway incorporates biochemical and structural features to minimize photorespiration by …
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Systematics and reproductive biology of the genus Morus L. (Moraceae)
… pair in the Flint Hills region, and assessed hybridization between these species at Konza Prairie Biological Station (KPBS). Both species are subdioecious, and Flint Hills populations exhibit significantly male-biased sex ratios, with sex expression being size independent. Approximately 10% of …
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