megaspore
英 ['megəspɔ:]
美 ['megəˌspoʊr]
- n. 大孢子；（种子植物的）胚囊
英语词源
- megaspore (n.)
- 1857, from mega- + spore.
权威例句
- 1. The gametophyte is derived from the product of a reduction division in the megaspore mother cell.
- 该配子体是由大孢子母细胞进行减数分裂而来.
- 2. A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.
- 孢原细胞处于珠心表皮之下, 直接起大孢子母细胞的功能.
- 3. Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
- 大孢子四分体为线形, 合点端功能大孢子发育成为蓼型胚囊.
- 4. The functional megaspore in the linear tetrad is the one endsac is the polygonum type.
- 大孢子四分体为直线型、少数为“T”型排列,合点端的一个为功能性大孢子.
- 5. As development goes on, callose fluorescence disappears in the chalazal wall of diplosporous functional megaspore.
- 二倍体功能大孢子的合点端细胞壁内的胼胝质荧光消失.