KARYOTYPE CHARACTERIZATION OF ALFALFA COLLECTED FROM WESTERN DESERT OF EGYPT
Abstract
In this investigation an attempt was made to study karyotype characterization of alfalfa. Another aim of this study was the determination of area chromosome, length chromosome, short and long arm chromosome, Centromeric index, and Centromeric position using twenty accessions. The studied accessions exhibited variation ranged from the highest score of area chromosome in accession 7 to its lowest estimate only in accession 3. The results exhibited differences ranging from the highest score of length chromosome in the accession 8 (5.81 µm) to the lowest in the accession 3 (4.12 µm). The Karyotype of accessions alfalfa consists of one set of chromosome with satellites (chromosome 8), four sets of submetacentric chromosomes (chromosome 1-4), and four sets of metacentric chromosomes (chromosomes 5-8). All of the landraces have the same number of chromosome 32 chromosome (2n= 4X= 32) with four nearly identical sets of chromosomes. Investigation the chromosomal maps of landraces that can be utilized in different breeding programs.References
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