Differences in Grain Yield and Nitrogen Uptake between Tetraploid and Diploid Rice: The Physiological Mechanisms under Field Conditions.

After rice transplantation, the tiller number m −2 of FLY4 first showed an increasing trend, then a decreasing trend, and finally a stabilizing trend with rice growth in both years.

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We even observed a negative trend in yield for tetraploid rice with increasing N application, as the grain yield of T7 under N3 treatment was significantly lower than that under N2 and N1 treatments at a low planting density in 2019 ( Figure 1 ).

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