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在绚丽多姿的植物世界里,多胚现象要算一个趣闻。所谓多胚,就是一粒种子产生两枚以上的胚。这就意味着一粒种子可能会长出两株以上的幼苗。植物的多胚现象是十八世纪初由雷文霍克(1719)首先从桔子中发现的。从此,人们一谈论到多胚,自然就联想到甘美馥郁的桔子。柑桔多胚的形成和胚数植物的多胚主要有下面几种:1.一个合子或原胚分裂为两个或多个的裂生多胚。2.助细胞、反足细胞等胚囊细胞(卵细胞除外)产生的
In the gorgeous plant world, the phenomenon of polygamy is an anecdote. The so-called multi-embryo, is a seed to produce more than two embryos. This means that a seed may grow more than two seedlings. The polyembryonic phenomenon of plants was first discovered in Orange by Raven Hawke (1719) in the early eighteenth century. Since then, when people talked about multiple embryos, they naturally think of the sweet oranges. The formation of multiple embryos and embryos in citrus There are several main types of polyembryons in plants: 1. A zygote or proembryo is divided into two or more rigens. 2. Help cells, anti-podocytes and other embryo sac cells (except egg cells) produced