Browsing by Author "Egbuche, K.C."

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    Cytological Studies in Eichhornia crassipes (Mart.) Solms
    (Department of Plant Science and Biotechnology, Nasarawa State University, Keffi., 2015-10-03) Isa, Hauwa'u; Egbuche, K.C.; Malgwi, M.M; Aliyu, Tukur Nafisatu
    Chromosomal studies were carried out on Eichhornia crassipes and the taxon was found to have 32 individual chromosomes with haploid chromosome number of 16 (n=16), indicating a clear tetraploid genome of 2n =4x =32, chiasmata frequencies per nucleus/bivalent were analyzed at diplotene and diakinesis revealing a marked reduction of chiasmata at diakinesis as compared tobdiplotene . the very low terminalization value of 0.43 showed that most of the chiasmata were terminalized at diakinesis and metaphase I. Multivalent associations were frequent suggesting the presence of a translocation heterozygote . Univalents were also frequent occurrence .chromatid bridges , fragment, Laggards and eliminated chromosomes were also frequent at both MI and MII. Secondary association of chromosomes occurred with a prepodence of four and eight over other groups.