Uneven segregation of chromosomes: a possible source of aneuploidy in Cenchrus ciliaris (Poaceae: Paniceae)
نویسندگان
چکیده
منابع مشابه
Physical mapping of 5S and 18S-5.8S-26S RNA gene families in polyploid series of Cenchrus ciliaris Linnaeus, 1771 (Poaceae)
The Buffelgrass (Cenchrus ciliaris L., Poaceae) is one of the most important pasturage grasses due to its high productivity and good forage qualities. This species possess a high adaptability to bioclimatic constraints of arid zones and may be used for the restoration of degraded arid ecosystems. Tunisian populations present three ploidy levels (4x, 5x and 6x) with a basic chromosome number x=9...
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Scarcity of irrigation water and increasing soil salinization has threatened the sustainability of forage production in arid and semi-arid region around the globe. Introduction of salt-tolerant perennial species is a promising alternative to overcome forage deficit to meet future livestock needs in salt-affected areas. This study presents the results of a salinity tolerance screening trial whic...
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Microsporogenesis was analyzed in five accessions of Brachiaria dictyoneura presenting x = 6 as the basic chromosome number. All accessions were tetraploid (2n = 4x = 24) with chromosome pairing in bi-, tri-, and quadrivalents. The recorded meiotic abnormalities were those typical of polyploids, including precocious chromosome migration to the poles, laggard chromosomes, and micronucleus format...
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Cenchrus longispinus (Hack.) Fernald (Poaceae), as a weed, is native of America, but has also been introduced in other countries including Iran in the recent years. In this study, karyotypic features in one population of this species was studied. As such, microscopic slides of root tip meristem cells were prepared using the classical squash technique and aceto-iron-hematoxylene staining. The ch...
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ژورنال
عنوان ژورنال: South African Journal of Botany
سال: 1998
ISSN: 0254-6299
DOI: 10.1016/s0254-6299(15)30847-4