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甜菜花粉母细胞减数分裂同步性问题,是甜菜胚胎学的基础研究之一。玉米、水稻、大豆等重要栽培作物,在一朵花内的花药之间,以及在同一花药之内,花粉母细胞的减数分裂具有较高的同步性。但关于甜菜小孢子发育同步性的研究却较少,国内尚未见报道。T.Tsuchiya 指出,甜菜减数分裂时期是不同步的,通常在一个花药里,能够观察到几个不同发育时期的花粉母细胞。我们在田间采取二倍和四倍体甜菜花序,对
Beet pollen mother cell meiosis synchronicity is one of the basic research of sugar beet embryology. Maize, rice, soybean and other important cultivated crops, in a flower within the anthers, and within the same anther pollen mother cell meiosis has a higher synchronization. However, there are few researches on the synchronization of microspore development in beet and have not been reported yet in China. T. Tsuchiya pointed out that during the period of meiosis of sugar beet, it is not synchronized. Usually in one anther, pollen mother cells can be observed in several different developmental stages. We took double and tetraploid beet inflorescences in the field, right