Document Type : Original Article

Authors

• Soliman M. El-Sagheer ¹
• sayed A. Ahmed ²
• Gamal A. M. Abdu-Allah ²
• Ali H. Ahmed ³
• Ghanem F. M. AbdEl-Mageed ⁴

¹ pesticides lecturer, Plant Protection Department, Faculty of Agriculture, Al-Azhar University, Assiut, Egypt.

² Plant Protection Department, Faculty of Agriculture, Assiut University, Egypt

³ Plant Protection Department, Faculty of Agriculture, Al-Azhar University, Assiut 71524, Egypt

⁴ Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assuit 71524, Egypt

Abstract

The extensive use of herbicides for associated weeds in maize fields may pose a threat through chromosomal aberrations in mitosis stages. In the present work, the effects of single herbicides and their combinations on germination, growth, mitotic activity, and mitotic aberrations were studied. The results indicated that the mitotic division rate was decreased in all treatments compared to the control. The most decrease in mitotic division was in (bromoxynil 20% + MCPA sodium 20%) and (bromoxynil 20% + MCPA sodium 20% + halosulfuron-methyl 75%). On the other hand, the most frequently occurred chromosomal aberrations were sticky metaphase and the observed aberrations were bridge, laggard and disturbed anaphase, and vacuolated nucleus. In general, treatments with these pesticides caused progressive changes in germination percentage and chromosomal aberrations in mitosis division for root tip cells in maize seedlings. 

Keywords

• Herbicides
• Herbicide Combinations
• Zea mays
• Cytological Aberrations

Main Subjects

• Agricultural engineering
• Agronomy, including plant science, horticulture, weed, plant breeding, plant fertilization, and soil science