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莜麦为什么会花梢?得先从莜麦穗分化谈起.莜麦穗分化的特点莜麦穗子属圆锥花序,在形态上分为周散形和侧散形两种。周散形的穗子是分枝和小穗向以茎杆为中心轴的四周披散,如“华北二号”,“五寨三分三”等莜麦都属这种穗型;侧散型的穗子是分枝和小穗向茎杆的一边披散,如“青海甜燕麦”等。莜麦穗子分化的顺序是离顶式的,即由主轴顶端的小穗先分化,然后是最上边轮层的最顶端的小穗分化,依次向下分化
莜 wheat Why fancy 得 first talk about 莜 wheat spike differentiation 莜 characteristics of wheat spike 莜 wheat panicle is a panicle, morphologically divided into two kinds of weeks and side scattered. Week scattered spikes are branches and spike to the stem as the central axis around the loose, such as “North China II”, “Wuzhai third of three” and other Oyster are the panicle; side scattered Spike is a branch and spike to the side of the stem loose, such as “Qinghai sweet oats” and so on. The order of 穗 wheat ear differentiation is off-set, ie, the spikelets first differentiate from the top of the spindle, then the topmost spikelet differentiation of the uppermost turn, followed by downward differentiation