1Watkins A E.Studies on meiosis in diploid and incompatibility.J Genet,1932,25:125～162
2Muntzing,A.studies on meiosis in diploid and triploid solanum tuberosum.Hereditas,1933,17:273～245
3H. L. Mogensen,V. T. Wagner. Associations among components of the male germ unit followingin vivo pollination in barley[J] 1987,Protoplasma(2-3):161～172
