- 更多网络例句与小胚孔相关的网络例句 [注：此内容来源于网络，仅供参考]
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DMBQ, ferulic acid and resorcin were effective chemical signal substances in the process of seed germination and haustorium formation of Cistanche deserticola. 4.The embryo is consist of 12 cells, the endosperm cell degraded so as to provide nutrition for the embryo development .As a result, germ tube differentiated from the embryo and came out through micropylar end, the small cell at the tip of the germ tube held the capacity of cleavage and the other cells grew big ,so the germ tube elongated .The anterior extremity of germ tube swelled to form haustorium under chemical substances treatment, the haustorium cell stained ,especially its portrait because of the lignification of the cells.
肉苁蓉种子的胚是由12个细胞紧密排列形成的圆球状胚，球形原胚分裂增殖的同时，胚乳细胞分解，为胚细胞的增殖提供营养，最终胚上分化出的芽管由珠孔端冒出，芽管前端细胞较小，具有旺盛的分裂能力，后部细胞体积增大，芽管逐渐伸长，在化学物质的诱导下，芽管由中部至前端细胞膨大分化出初生吸器，初生吸器呈帽子状，而这些细胞比其周围的细胞着色深，吸器纵向局部区域的番红染色加深，细胞高度木质化。
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Seed 1; cotyledons unequal, 1 large, starchy, retained in fruit, 1 small, scalelike, germinating from fruit apex, through pore of stylar canal; endosperm absent.
种子1；子叶不均匀的，1个大，粉状的，保留在果里面，一个小，鳞片状从果实顶部发芽，横穿花柱道孔；无胚乳。
- 更多网络解释与小胚孔相关的网络解释 [注：此内容来源于网络，仅供参考]
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entomophily：虫媒
虫媒花:昆虫为媒介进行传粉方式的称虫媒(entomophily),借助这类方式传粉的花,称虫媒花 虫媒花 珠孔: 珠孔:种子植物的胚珠顶端由于珠被不愈合而形成的一个小开孔或小缝隙.珠孔受精的植物,其珠 孔为花粉管进入胚珠内的通道.胚珠发育成种子后,