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1 胚休眠胚休眠有两种不同类型,一种是种胚尚未成熟,另一种是种子尚未完成后熟。 1.1 甜菜种子从外表上看,各部分组织均已充分成熟,但内部的种胚尚未成熟。不成熟的胚相对较小,某些情况下几乎没有分化,需从胚乳或其它组织中吸收养料,进行细胞组织的分化或继续生长,直到完成生理成熟。种胚发育的适宜条件是潮湿、温度在18～25℃下,就能发育完全,并获得发芽能力。
1 embryo dormancy embryos There are two different types of dormancy, one is immature seed embryo, the other is the seed has not yet completed after ripening. 1.1 Beet seeds From the appearance point of view, all parts of the organization have been fully mature, but the embryo within the immature. Immature embryos are relatively small, with little or no differentiation in some cases, requiring nourishment from the endosperm or other tissues for differentiation or continued growth of the tissue until physiological maturation is completed. Suitable conditions for embryo development is humid, the temperature at 18 ~ 25 ℃, will be able to fully develop and obtain germination.