摘要
用石蜡切片法观察了三粒小麦胚和胚乳的发育。1.受精作用,胚和胚乳的发育及进程基本和普通春小麦相同;2.三个籽粒中主雌蕊胚的发育往往领先;3.副雌蕊中出现大量异常现象,如胚的上下和背腹颠倒、横位胚、胚胎上移、多胚现象及胚乳缺失等。各种异常现象总计约占副雌蕊胚的88%。
The development processes of embryos and endosperm of trigrain wheat were observed by using paraffin section method and intact dissection.The results were as follows: 1.Fertilization:the development and progression of embryo and endosperm were similar to those as common wheat.2.The grain come from the primary pistil embryo developed more early among the three-grains.3.Many abnormal structures,such as conversion of position between the top and base,back and belly of embryos,horizontal embryos,embryos moved on top,polyembryony and endosperm deficiency etc,appeared in additional pistils.All abnor- malities accounted for 88 percent in whole additional pistils.
基金
国家自然科学基金
关键词
小麦
胚
胚乳
异常性
Trigrain wheat
Embryo
Endosperm
Abnormality
