DONGHUA LIU1*, WUSHENG JIANG2, QINGMIN MENG1, JIN ZOU1, JIEGANG GU1, MUAI ZENG1
BIOCELL, Vol.33, No.1, pp. 25-32, 2009, DOI:10.32604/biocell.2009.33.025
Abstract Different copper concentrations, as well as different exposure times, were applied to investigate both cytogenetical and ultrastructural alterations in garlic (Allium sativum L.) meristem cells. Results showed that the mitotic index decreased progressively when either copper concentration or exposure time increased. C-mitosis, anaphase bridges, chromosome stickiness and broken nuclei were observed in the copper treated root tip cells. Some particulates containing the argyrophilic NOR-associated proteins were distributed in the nucleus of the root-tip cells and the amount of this particulate material progressively increased with increasing exposure time. Finally, the nucleolar material was extruded from the nucleus into the cytoplasm. Also,… More >
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