Theoretical basis: Sunlight is an important factor in plant growth. The intensity and duration of sunlight exposure can be studied as a measuring factor. Photosynthesis, which takes place when plants are exposed to sunlight, is one of their main growth processes. In a previous study, it was found that some bean plants grow best when they are partially shaded. However, this may be related to the bean variety as well. And other studies have done in-depth investigations on light intensity and leaf exposure to different UV radiations. Most experiments have been conducted on common beans and broad beans, while more recent experiments on runner beans, especially for length of sunlight exposure are less common. Based on the available literature and previous studies, I intend to investigate the effect of sunlight duration on the growth of runner beans. Exploring under which light duration runner beans grow best will provide options for agricultural cultivation in some areas and further explore the issue of food resources.
Ecological processes: primary production, respiration, energy flow
Idea: My research was initially based on my observations of plants in my backyard. I found that plants that were sown at the same time grew at different rates. And when I search the literature, I found that studying how plants respond to light conditions helped to apply the findings to agricultural cultivation. For example, plants with more light requirements and high tolerance to long daylight might be suitable for tropical areas or high latitudes. This might help with the problem of food scarcity in some areas. My study was conducted based on these ideas.
3 Keywords: Runner beans, sunlight, growth rate
Sounds like a good start to the theoretical basis that will form your introduction. Different plants are more adapted to sun / shade so you will have to focus your research in this way as well.