Reason for Corrigendum:
There was a mistake in the color of the arrow of Figure 1A as published. Red arrows should be white and white arrows should be red in Figure 1A. The corrected Figure 1 is below. The authors apologize for the mistake. This error does not change the scientific conclusions of the article in any way.
Figure 1.
Cytological observation of P. simonii × P. nigra PG and PTG. (A) DAPI fluorescence image of two-celled and three-celled pollen. (B,B′) Bright-field and DAPI fluorescence images of the two and three nuclei states in the tube; red arrows show generative nuclei or two sperm nuclei, and white arrows show vegetative nuclei. (C,C′) Bright-field and DAPI fluorescence images, respectively, of the vegetative nucleus leading the sperm nucleus into the PT. (D,D′) Bright-field and DAPI fluorescence images, respectively, of two sperm nuclei moving into the tube before the vegetative nucleus.
Author contributions
CY designed experiment. LZ carried out experiments, analyzed experimental results, and wrote the manuscript. HY assisted with results analysis. WG assisted with organizing figures and tables.
Conflict of interest statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.