On the chromosome pairing in six hybrids among four Geum species
نویسندگان
چکیده
منابع مشابه
Chromosome pairing affinities in interspecific hybrids reflect phylogenetic distances among lady's slipper orchids (Paphiopedilum)
BACKGROUND AND AIMS Lady's slipper orchids (Paphiopedilum) are of high value in floriculture, and interspecific hybridization has long been used for breeding improved cultivars; however, information regarding the genome affinities of species and chromosome pairing behaviour of the hybrids remains almost unknown. The present work analyses the meiotic behaviour of interspecific hybrids by genomic...
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Genes involved in the exclusive pairing of homologous chromosomes have been described in several polyploid species but little is known about the activity of these genes in diploids (which have only one dose of each homoeologous genome). Analysis of the meiotic behaviour of species, natural and artificial hybrids and polyploids of Glandularia suggests that, in allopolyploids where homoeologous g...
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Otoliths are considered as very useful structures of fishes for various studies. This investigation aimed to compare the morphometric parameters between the right and left otoliths of male and female specimens of four species of the fishes belonging to the family Carangidae from the northern Persian Gulf. The morphometric parameters such as weight, length, width, area and perimeter of sagittal ...
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Otoliths are considered as very useful structures of fishes for various studies. This investigation was aimed to compare morphometric parameters between right and left otoliths of males and females fishes amongst four species belong to the family Carangidae from the northern Persian Gulf. The morphometric parameters such as weight, length, width, area and perimeter were measured and then compar...
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The hybrid zone between chromosome races of the common shrew (Sorex araneus) 14 provides an exceptional model to study the potential role of chromosome rearrangements in the 15 initial steps of speciation. The Novosibirsk and Tomsk races differ by a series of Robertsonian 16 fusions with monobrachial homology. They form a narrow hybrid zone and generate hybrids with 17 both simple (chain of thr...
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ژورنال
عنوان ژورنال: Acta Societatis Botanicorum Poloniae
سال: 2017
ISSN: 2083-9480
DOI: 10.5586/asbp.1948.015