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　　Pollen tube guidance is a common process, analogous to axon guidance in animals, which involves cell-cell interactio......

‘巨峰’葡萄主梢花粉粒大于副梢，花粉染色率与副梢差异不显著，发芽率低于副梢，但花粉发芽率不影响种子的形成。主梢小花雌蕊在减数分......