【摘要】 从水稻双胚苗中寻找不定胚，是筛选水稻无融合生殖材料的有效途径之一。然而水稻双压苗和双生苗（中胚轴等低节位分蘖）的外观形态相似。本文应用比较解剖学方法研究了Ｃ１００１Ｂ双胚苗的形态结构。发现其主苗和次苗之间没有维管束联系，是源于两个独立的胚。主苗发芽早于次苗４一５天，都各自具有独立的种根、节根、胚芽鞘、不完全叶。更多还原

【Abstract】 To look for the adventitious embryo in the two-embryo seedling of rice is an effective way to screen the material for rice apomixis However the external morphology of two- embryo seedlings is similar to that of twin seedlings (tillers at the lower nodes such as mesocotyl)Inthe paper the anatomical method is used to study the morphology of two-embryo seedling C1001B It is found that no vascular bundle exists to relate the main seedling with the secondary seedling and each of them grows up from a respective embryo The main seedling emerges 4-5 days earlier than the secondary seedling and both have their own seminal root nodal root coleoptile and incompliteleaf更多还原