## 3 Results and Discussion
### Stock Plant Growth, Morphology, and Net Photosynthetic Rate  
Plant crown diameter (Figure 10a) and leaf count (Figure 10b) did not increase with an increase of light intensity in the 01 to 12 week cycle but did by the end of experiment (21 weeks). Plant leaf area, canopy fresh mass, and canopy dry mass measured at 21 weeks increased with an increase of light intensity (Figure 10c-e).  
As expected, higher light intensity promoted stock plant growth, similar to other studies in strawberry. For example, [PERSON] et al. (2017) grew strawberry \"Maehyang\" (short-day) stock plant in different light intensity treatments and found that stock plants grown under 400 umol m\({}^{-2}\) s\({}^{-1}\) (16 h photoperiod) had 40% and 85% greater dry mass than plants in 200 umol m\({}^{-2}\) s\({}^{-1}\) and 100 umol m\({}^{-2}\) s\({}^{-1}\), respectively.  
Total shoot dry mass allocation was calculated by adding the dry mass of all harvested parts including daughter plants, stolons (without daughter plants), and stock plant (Table 4). The light intensity treatment did not affect the shoot dry mass distribution to the different organs. The percent dry mass allocated to the propagation portion (daughter plants and stolons) was over 85% (Table 4); however, only 45% to 46% was allocated to daughter plants (harvest index). Environmental conditions [(41; 42)], cultivar [(43)], fruit load management [(44)], among others, can affect the dry mass partitioning between plant organs. For example, in tomatoes grown in greenhouses, the percent dry mass distribution to the tomato fruit is close to 60% to 70% [(45; 46)]. Additional research is needed to increase the dry mass percent distribution to the daughter plants in PIP systems.  
Figure 9: Flower removed per stock plant per week of day neutral strawberry \"Albion\". Open markers (\(\Delta\), \(\square\), \(\Circuit\)) represent data collected for weeks 01 to 12, and filled markers (\(\Delta\), \(\blacksquare\), \(\bullet\)) represent data collected for weeks 12 to 21. Triangles (\(\Delta\), \(\Delta\)), squares (\(\blacksquare\), \(\square\)), and circles (\(\bullet\), \(\Circuit\)) represent plants grown under 250, 350, and 450 umol m\({}^{-2}\) s\({}^{-1}\) light intensity, respectively.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Treatment** & **Percent Daughter Plant** & **Percent Stolon** & **Percent Stock Plant** \\ \hline
250-PPF & \(45.8\pm 2.6\%\) & \(30.7\pm 1.3\%\) & \(23.4\pm 1.8\%\) \\
350-PPF & \(45.4\pm 1.6\%\) & \(30.5\pm 1.2\%\) & \(24.2\pm 0.5\%\) \\
450-PPF & \(45.3\pm 0.8\%\) & \(30.5\pm 0.8\%\) & \(24.1\pm 0.4\%\) \\ \(p\)-value & \(p=0.959\) & \(p=0.9604\) & \(p=0.7477\) \\ \hline \hline \end{tabular}
\end{table}
Table 4: Shoot dry mass percent distribution of day neutral strawberry “Albion” at the end of the experiment (01 to 21 weeks). \(p\)-value represents differences between light treatments (\(p\leq 0.05\)).  
Figure 10: \(Cont\).  
Figure 10: (**a**) Effect of light intensity on stock plant crown diameter; (**b**) leaf count; (**c**) leaf area; (**d**) fresh mass; and (**e**) dry mass, of day neutral strawberry “Albion”. Open circles (\(\Circinus\)) represent data collected for the 01 to 12 week cycle and filled circles (\(\bullet\)) represent data collected for the 12 to 21 week cycle. Solid line represents significant linear regression (\(p\leq 0.05\)).