Video and Image Analysis Activities for a Plant Physiology Laboratory

植物科学往往是生物学教育中被忽视的领域之一。学生对植物的熟悉程度通常不如对动物的熟悉，而且由于植物的静态性质和缓慢的生长，他们往往不会受到植物研究的刺激。这个项目旨在为植物生理学课程开发实验室练习，可以让学生对植物生物学有一些意想不到的和有趣的见解。一旦这些练习在植物生理学课程中得到实施和完善，其中一些练习也可以用于入门课程，以激发学生的兴趣。 这些练习涉及视频和图像捕捉，以分析生长和生理行为的模式。一种方法是用录像带记录植物的快速运动，逐帧分析并量化观察结果。同样，植物的缓慢运动也可以通过延时技术来分析，这些技术揭示了实时观察不容易看到的迷人的运动模式。对于这两种技术，都使用视频测微仪系统分析录像带，可以进行精确的测量以进行分析，或者将视频序列数字化到计算机中以进行更复杂的图像分析和处理。在一个学期的课程中，可以安排各种学生小组项目，为学生提供计划实验，执行实验，分析结果并向班级做最后陈述的机会。

Plant sciences is often one of the more neglected areas in biology education. Students are usually less familiar with plants than animals and often are not as stimulated by plant research, given plants' static nature and slow growth. This project is designed to develop laboratory exercises for a plant physiology course that can give students some unexpected and interesting insights into plant biology. Once the exercises are implemented and refined in the plant physiology course, some of them can be used in introductory courses to stimulate interest there as well. The exercises involve video and image capture to analyze patterns of growth and physiological behavior. One approach makes videotape recordings of rapid plant motions, analyzing them in frame-by-frame sequences and quantifying the observations. Similarly, slow plant motions can be analyzed by time-lapse techniques that reveal fascinating patterns of motion not easily visualized by real-time observation. For both techniques, videotape is analyzed with a video micrometer system that allows precise measurements to be made for analysis, or video sequences are digitized into a computer for more complex image analysis and processing. A variety of student group projects can be accommodated during the course of a semester, providing the students with an opportunity to plan an experiment, carry it out, analyze the results, and make a final presentation to the class.