Home » Ask & Discuss » Biology (for Medical Entrance) » Botany « Back to Discussion

Botany

New kid on the Block

Joined:	25 Jan 2012
Post:	2

25 Jan 2012 22:58:11 IST

0 People liked this

151

what is exactly relative growth rate? how we can explain to students?

Biology

what is exactly relative growth rate? how we can explain to students?

Share this article on:

Comments (1)

Vikram Saxena

Forum Expert

Joined: 1 Apr 2007

Posts: 3732

27 Mar 2012 23:52:24 IST

Like 0 people liked this

Relative growth rate (RGR) is a measure used in plant physiology to quantify the speed of plant growth. It is measured as the mass increase per aboveground biomass per day, for example as g g^-1d^-1. It is considered to be the most widely used way of estimating plant growth, but has been criticised as calculations typically involve the destructive harvest of plants.^[1]

RGR is calculated using the following equation:^[1]

RGR = (ln W2 - ln W1)/(t2-t1)

Where:

ln = natural logarithm

t1 = time one (in days)

t2 = time two (in days)

W1 = Dry weight of plant at time one (in grams)

W2 = Dry weight of plant at time two (in grams)

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team