Data
Data Table:
Table 3: Raw data of plant height (cm), plant dry biomass (g), number of spikes per plant, and number of seeds per plant.
Once winter wheat reached the maturity stage, several measurements were taken before and after the hand harvesting, including plant height (cm), plant dry biomass (g), number of spikes per plant, and number of seeds per plant. The measured plant height is from the pot soil surface to the plant top. The plant dry biomass measured the total mass of dried plant stems, leaves, and spikes; the mass of roots was not included. Spike and seed count were simply measured in terms of how many spikes and seeds were produced from the plant in each pot. The raw measured data is shown in Table 3.
In this experiment, the sampling unit is the winter wheat plant in one pot. The predictor variable is the PB application treatment (T1, T2, T3, and T4), a categorical variable manipulated during the experiment. The response variables are the plant characteristics per pot at the maturity stage, including plant height, plant dry biomass, number of spikes, and number of seeds. By comparing the same characteristics of winter wheat under different treatments, the impact of different PB applications on winter wheat production under heat and drought stresses can be evaluated.
Exploratory graphics:
Figure 5a. Winter wheat plant heights at maturity in different PB treatments.
Figure 5b. Winter wheat plant dry biomass at maturity in different PB treatments.
Figure 5c. Winter wheat plant's spikes number at maturity in different PB treatments.
Figure 5d. Winter wheat plant's seeds number at maturity in different PB treatments.
The data for plant heights, plant dry biomass, plant spikes number, and plant seeds number was diagnosed using boxplots in RStudio where outliers were observed as in Figure 4a for plant heights, Figure 4b for plant dry biomass, Figure 4c for plant spikes number, and Figure 4d for plant seeds number. There was no data-cleaning practice when generating graphics.