论文部分内容阅读
研究了番茄大、小孢子的发生及雌、雄配子体的发育．结果表明：番茄（LycopersionesculentumMill．）花粉母细胞的胞质分裂为同时型.小孢子四分体呈正四面体型．番茄绒毡层细胞是同型的，均来自初生壁内层，为腺质绒毡层．小孢子继续发育成2-细胞花粉：营养细胞和生殖细胞．雌蕊为湿型柱头、实心花柱、倒生胚珠、单珠被.胚囊母细胞经减数分裂形成直线排列的四分孢子，珠孔端1个继续发育为功能大孢子，其余3个退化．胚囊发育为蓼形．
The occurrence of large and small spores of tomato and the development of female and male gametophytes were studied. The results showed that the cytoplasmic division of pollen mother cells from Lycopersion esculentum Mill. Was synchronous and the tetrad of the microspores showed a regular tetrahedron. Tomato tapetum cells are the same type, are from the primary wall lining, gland tapetal. Microspores continue to develop into 2-cell pollen: vegetative and germ cells. The pistils were wet stigma, solid style, inverted ovule and single beetle.The blastocyst mother cells were meiofibrated to form linearly arranged tetrad spores, one of which continued to develop as a functional megaspore and the other three degenerated. Embryo sac development for the Polygonatum.