Course:VANT149/2025/Capstone/Science/Team16

Abstract

This project order to explore the impact of different lighting conditions on the early growth process of garlic (Allium sativum), with an experimental period of twenty-one days. The experiment was set up with three control environments: natural light, LED light and complete darkness. For each light conditions, there are two pots of garlic to minimize the effects of individual differences, and growth indicators were recorded at seven time points (days 0, 3, 7, 10, 14, 17, and 21). The main data collected included plant height, number of leaves, root length and color health score. About the results of the experiment, it showed that the garlic that received natural light performed the most significantly in all indicators, with an average height of 16.7 cm on day 21 and a well-developed root system. The LED light group performed moderately well, while the plants in the no-light group showed almost no significant growth and showed significant color fading. The research results confirm that full-spectrum light sources play a crucial role in promoting photosynthesis and early growth of plants. Although LED light can to some extent replace natural light, natural light remains the most effective source of illumination.

Biographies

Keyu Lu is a first-year student in the Science stream at UBC Vantage College. Her research focuses on how different types of light affect the growth of plant seedlings. She is personally interested in this topic because it reflects her curiosity about how living organisms adapt to changing environments and how subtle environmental factors can shape biological outcomes.

Hou Yongqi is a first-year Vantage Science student at UBC, focusing on how light conditions affect early-stage plant growth. He looks forward to exploring more about plant development in scientific settings.

Yiran Zheng is a first year student in the vantage one bachelor of science at the University of British Columbia .Her research focuses on the effects of different light conditions on garlic growth. She is personally interested in this topic because it combines biological experimentation with quantitative analysis, offering insights into how environmental factors influence plant development.