Result from observation of sex reversal phenomenon of Pinus tabulaeformis microstrobilus shows that: differentiated normal microstrobilus had a phenomenon of sex reversal,which changed to megastrobilus gradually from the top to the base,until the entire into unusual megastrobilus;the unusual megastrobilus had a ability to accept pollen,and developed into fascicled small cone on the branches.
通过对油松小孢子叶球性反转现象的观察,结果表明:已经完成分化的正常小孢子叶球发生了性反转,从其顶端的小孢子叶开始向基部逐渐转变成大孢子叶,直至整个小孢子叶球转变成异常的大孢子叶球;异常大孢子叶球具有接受花粉的能力,并在枝条上发育成为蔟状着生的小球果。
The submerged culture condition of Isaria japonica,a new resource of cordyceps,was optimized through orthogonal experiments.
通过正交实验对虫草新资源大孢虫花(Isaria japonica)液体深层培养条件进行优化,所得发酵液用于研制虫草酸奶。
Triploid induction in white poplar by chromosome doubling of megaspore;
诱导大孢子染色体加倍选育白杨杂种三倍体
Genesis and developments of megaspore and nucellar embryo in Jiaogan ;
蕉柑大孢子与珠心胚的发生发育
) at megasporogenesis stageto study the relationship between calcium andmegaspore degeneration.
莴苣胚囊发育为蓼型,减数分裂形成的4个大孢子中只有合点端的一个大孢子可继续发育,其余3个大孢子从珠孔端依次退化。
Aim The development of megasporogenesis and microspore of morphological bisexual flowers of S.
大孢子母细胞减数分裂产生T 形四分体和少数线形四分体。
The research included its microsporogenesis, the development of male gametophyte, megasporogenesis, the development of female gametophyte, .
Schulz )的各营养器官的解剖结构,探讨了其可耐高盐环境的结构基础;首次报道了小盐芥的小孢子发生及雄配子体发育过程、大孢子发生及雌配子体发育过程、受精过程、胚及胚乳发育过程,以及上述各过程不同阶段与花蕾、花、果实外部形态的相关性。
Studies on the Megasporogenesis, Microsporogenesis and Development of Female and Male Gametophyte of Capsicum annuum L.;
胚珠内为单孢原,孢原直接发育为大孢子母细胞,经减数分裂形成线形四分体,合点端倒数第2个大孢子发育为功能大孢子,经连续三次有丝分裂发育为七细胞七核的成熟胚囊,雌配子体的发育为蓼型。
