Effect of cypermethrin insecticide on root chromosome morphometry of scallion (Allium fistulosum)

Abstract. Haq FAN, Etikawati N, Solichatun. 2023. Effect of cypermethrin insecticide on root chromosome morphometry scallion (Allium fistulosum). Cell Biol Dev 7: 14-21. Farmers in Tawangmangu, Karanganyar, Central Java, Indonesia, commonly use a pesticide known as whenever growing fistulosum L.). If used at excessive levels, can be fatal to plants. Chromosome morphological changes are an indicator insecticide's toxicity. Chromosomal morphometry, the study chromosomal size and shape, provide overall picture quality plant's development. This research aimed evaluate impact A. morphometrics. Information gleaned from includes size, aberration type, index, relative asymmetry centromere mitotic index. The concentration was sole independent variable this study, which Completely Randomized Design (CRD) factorial arrangement. Long green onions were treated with varying concentrations for up four weeks: 0 mg/L, 0.05 0.10 0.15 0.20 0.25 mg/L. squash method prepare apex roots. visualization output subjected quantitative qualitative descriptive analysis. index decreased, increased after exposure pesticides. higher cypermethrin, lower greater onion cells exposed underwent aberrations that could identified qualitatively. Sticky chromosomes, bridge, agglutination, disrupted metaphase, disturbed anaphase, hypoploid cell examples aberrations.