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在雪播西瓜的生长发育过程中,从双子叶出土到茎蔓形成,从营养生长到开花结实,各种特征特性,几乎无不受到雪中冷冻的深刻影响,归纳起来,大致有以下几种表现: ①子叶上不带种皮和常规播种不同,雪中播种的子叶一出土就能把种皮弹飞。这在加速子叶张开和及早接受光照上,有一定积极意义。 ②子叶和胚轴长短相等,在这种状态下进行嫁接和定植时,由于细胞的体积小,细胞壁坚固,构造水(细胞内
During the growth and development of snowmelon watermelon, from the unearthed dicotyledon to the formation of stem and stem, from vegetative growth to flowering and fruiting, all kinds of characteristics and characteristics, almost all are deeply affected by the freezing in the snow. To sum up, there are roughly the following manifestations : ① cotyledons without seed coat and conventional sowing different cotyledons in the snow can excavated the seed coat fly. This has some positive implications in accelerating the opening of cotyledons and receiving light early. ② The cotyledons and hypocotyls are equal in length and length. When grafted and colonized in this state, since the cells are small in size and the cell walls are strong, water (intracellular