Original video: https://youtu.be/zzVGv294mG8
Delivered on: 20 March 2024
Growth is an irreversible increase in mass. This video provides a comprehensive introduction to plant growth analysis, covering key concepts and practical techniques. We begin by defining growth and development in plants, highlighting their distinct characteristics. Then, we delve into the sigmoid growth curve, a graphical representation of plant growth progression, and break down its three phases: lag phase, exponential phase, and stationary phase. The mathematical formula behind the sigmoid curve is explained, along with important terms like the Euler's number and logarithms. To solidify your understanding, we conduct a hands-on experiment where you'll estimate leaf thickness by touch and then compare it to calculated values using SLA (Specific Leaf Area) and SLW (Specific Leaf Weight). This exercise demonstrates the importance of scientific measurement and data analysis in plant physiology. Finally, we'll show you how to calculate other essential growth parameters like AGR (Absolute Growth Rate), RGR (Relative Growth Rate) and CGR (Crop Growth Rate) using provided data. Get ready to unlock the secrets of plant growth!
STAGES OF CELLULAR GROWTH
Growth is not a simple process. It occurs in meristematic regions where before completion of this process, a meristematic cell must pass through the following 3 phases:
(I) Cell division (Formation Phase): The number of cells increases due to mitosis.
(ii) Cell enlargement (Elongation Phase): The size of individual cell increases after cell
division due to increase in the volume of its protoplasm
(iii) Cell differentiation (Maturation Phase): In this stage, structure of the cells changes to perform specific functions. And similar type of cells having same functions form a group, which is known as tissue.
Watch Part 1 here: https://youtu.be/3IIShfVeAq0
Keywords: Plant growth analysis, sigmoid curve, growth parameters, SLA, SLW, leaf thickness, plant physiology, Lessons, UPM, Education
Location:
Faculty of Agriculture, Universiti Putra Malaysia
Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor
XPMM+9J Seri Kembangan, Selangor
2.9845517506267742, 101.73803356324866
Attribution 4.0 International — CC BY 4.0 - Creative Commons
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