Its cotyledon node zone is telome elongation type.
向日葵幼苗的子叶节区类为枝伸。
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It can be shown that plants most widely different in habit and general appearance, and having strongly marked differences in every part of the flower, even in the pollen, in the fruit, and in the cotyledons, can be crossed.
可以证明, 在习性和般外观上差异最大的植物, 以及在花的每部分,甚至在花粉、 果实和子叶中都具有强烈显着差异的植物, 是可以杂交的。