四川山矾的小孢子囊和雄配子体的发育

DEVELOPMENT OF MICROSPORAGIUM AND MALE GAMETOPHYTE OF SYMPLOCOS SETCHUNENSIS BRAND

四川山矾(Symplocos setchunensis Brand)的孢原细胞由1～2列细胞组成,花药壁层的发育为双子叶植物型,初生造孢细胞分裂2～3次形成次生造孢细胞,同一花药室内小孢子母细胞的减数分裂是同步的,绒毡层属腺质绒毡层,直到花粉粒成熟时还可见到残留的绒毡层细胞。

The development of microsporagium and male gametophyte have been investigated. It is supposed that the number of archesporial to be one-two rows. Primary sporogenous cells divide for 2-3 times and form secondary sporogenous cells. It is synchromous hightly that microspore mother cells in the same anther chamber, enter in to the period of meiosis. The taptum cells are the glandular taptum and persist up to maturation of pollen grains.