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. 2021 Aug 1;8:173. doi: 10.1038/s41438-021-00609-9

Fig. 10. Effect of different chemicals on pollen tube growth.

Fig. 10

a the effect of different chemicals on pollen tube growth rate; b the effect of different chemicals on calcium accumulation in pollen tips; c the effect of different chemicals on gene expression during pollen tube growth. K3, kaempferol 3-O-rhamnoside; EGTA, a chelator of calcium ion; NPA, 1-N-naphthylphthalamic acid, an inhibitor of auxin efflux from plant cells; NOA, β-naphthoxyacetic acid, an inhibitor of auxin influx from plant cells. Data are presented as mean ± SE (n = 5); different letters above the bars indicate statistically significant differences among treatments at P < 0.01, LSD