关键词: ", 纸核", 东镇红芒, 开花习性, 染色体, 减数分裂

Abstract: Seedless Mango (Mangifera indica cv.Dongzhen Hongmang) was used to study its flowering behavior and meiosis of pollen mother cells with modified staining and chromosome preparing methods.The results were as follows.The chromosome number of mango is 40 and the meiosis in pollen mother cell is simultaneous cytokinesis;Monovalents is the optical period to study chromosome number;Polyploids are observed in monvovalents and cell's nonsynchronous division is observed in anaphase Ⅱ;Low temperature and rainy days probably gave an impulse to the polyploid and cell's nonsynchronous division;The relationship between abnormal circumstances in meiosis of pollen mother cells and seedless mango were studied on cytogenetics level.

Key words: Mangifera indica cv.‘Dongzhen Hongmang’, flowering behavior, chromosome, meiosis