作　　者： ; ;

机构地区： 天津师范大学生命科学学院生物系

出　　处： 《西南农业大学学报（自然科学版）》 1999年第1期81-83,共3页

摘　　要： 】用１～６μＭ／Ｌ甲氨磷处理蒜根尖。结果表明，２～５μＭ／Ｌ甲氨磷可提高蒜根尖分生组织细胞有丝分裂指数。其中，４μＭ／Ｌ处理可使分生组织细胞分裂指数提高至３．９６，而对照仅为２．０９；５～６μＭ／Ｌ处理可诱导根尖分生组织产生“多倍化”、“双核”和“多极化”分裂细胞。故５～６μＭ／Ｌ甲氨磷是蒜根尖分生组织细胞产生异常分裂的临界浓度。 The effect of Amiphrophos methyl (APM) on cell mitotis of root tips of Allium sativum was investigated at different concentrations (1～6 μM/L). The results indicated that mitotic index (MI) could be obviously increased when root tips were treated at 2～5 μM/L APM for 6 h. MI could be increased 3.96 when root tips were treated 4 μM/L APM, while 2.09 of mitotic index observed in the control. Chromosome doubling, binucleate cells and mutipolar cell division could be observed when root tips were treated with 5～6 μM/L APM。 This concentration was therefore considered threshold concentration for causing in Allium sativum abnormal cell mitotis which could be caused due to the disturbance in spindle function.

关 键 词： 甲氨磷 蒜 细胞 有丝分裂

领　　域： [农业科学] [农业科学] [农业科学] [农业科学]