摘要: Normally, the egg cell requires fertilization stimulus to enter embryogenic development. However, there is ample evidence suggest that it has necessary genetic information initiate embryogenesis independent of (parthenogenesis). In some apomictic plants, apparently divides in total absence a from male gametes (Battaglia, 1963, Chapter 16 this volume). several other plants possible stimulate unfertilized and/or embryo sac (apogamy), by external treatments, divide and form an (Lacadena, 1974; Sestili Ficcadenti, 1996).