studies of postmeiotic chromosomes have been impeded by the thick exine of immature pollen grains. chromosome staining of immature and adult pollen grains through conven-tional acetocarmine procedure is tedious and often leads to unsatisfactory results. an acetocarmine stain, used in conjugation with carnoy’s solution as fixative for 72 hrs or until the chlorophyll-containing tissues of spike b...

The genotoxic effects of the herbicide oxyfluorfen on root meristem cells Heianthus annuus L. (sunflower) were investigated. roots treated with 75, 150, and 300 ppm concentrations for 12 24 h. different genetic endpoints such as mitotic index (MI), chromosome aberrations (CA), micronuclei (MN) analyzed in both control test groups. showed a marked mitodepressive action mitosis. Additionally, MN ...

Allium cepa bulbs were grown in pure tap water (group I), in seven concentrations of acetaminophen (7.81, 15.62, 31.25, 62.50, 125, 250, 500, and 1000 ppm) in the presence (group II) and absence of myrobalan (fruit of Terminalia chebula) at a fix concentration of 0.10 mg/mL. Parameters of study were mean root length, mitotic index, abnormal mitosis and chromosomal aberrations and morphology of ...

Oriented cell division is a key regulator of fate and linked to the positioning spindle in mitosis. However, mammals cues that determine planar versus perpendicular remain largely unclear. One candidate polarity protein atypical kinase C (aPKC)l, which regulates orientation vivo epidermis. To study how aPKC controls mitotic orientation, we developed minimal keratinocyte culture system occurs ab...