Vol. 2, Issue 5 (2017)
Karyomorphological investigation into the white seeded Abrus precatorius L. in Bangladesh
Author(s): Animesh Biswas, Mohammad Mahbubur Rahman
Abstract: Cytological investigation was done in white seeded Abrus precatorius L. intended to ascertain the chromosome number and karyotype. Somatic chromosome count of this variety was found to be 2n=22. Chromosomes were small in size, ranging from 2.10 to 0.90 µm. Resting chromosomes were simple chromocenter type with 15-18 heteropycnotic bodies. TF% and asymmetry index (AI) was 38.36 and 3.38 respectively. The haploid complement was grouped into three morphological categories viz. metacentric, submetacentric and sub-telocentric. The centromeric formula was 3m+3nm+4sm+1st. According to Stebbins (1971) classification the karyotype was of 2B type.