Abstract
SUMMARYWithout any elaborate post-fixation treatment, dot-like kinetochores in the somatic metaphase chromosomes of Allium cepa were stained differentially with 2% aceto-orcein after storage of the air dried squashes of colchicine treated and acetic-ethanol fixed root meristems for an optimum period of 3–4 weeks. Similar results were obtained also for Aloe vera, Rhoeo spathacea and Tradescantia virginiana chromosomes. The probable mechanism of this differential stainability has been discussed.
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