无核荔枝种子败育的胚胎学研究

An Embryological Study of Seed Abortion in a Seedless Litchi Strain

无核荔枝是一个珍贵品种，由于其具有双蒂果同时发育、无种子（完全无核）、假种皮丰富、无明显大小年之分等特征，值得大力推广．无核荔枝的大孢子在发育各个阶段均可出现败育现象，结果导致无法形成胚，这是产生无核的主要原因．

The seedless Litchi is a valuable strain and would be Worth popularizing. The charactersseedless Litchi has are double fruits developing at the same time, no seed, rich arils, and stable yield inthe crops in each year.The megaspores have all degenerated forms in whole developmental phase.So itcan't form the embryo. This is the main reason of forming the seedless type.