A Preliminary Study on the Tetrasporic Micronucleus and Karyotype of Microspores in Cultured Allium tuberosum
韭菜的小孢子四分体微核和核型的初步研究

In this paper, the chromosome numbers and karyotypes of Allum tuberosum were observed. The chromosome numbers of the most microspores are n= 16, a few are aneuploid. According to these facts, karyotype formula n= 2x = 16= 14m + 2st(SAT) was obtained. The fertility and tetrasporic micronucleus of microspore were observed too. They are 48% and 23.6% respectively. These results confirmed that the karyotype of Allium tuberosum is the isotetraplont which had been reported by others.