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Propagating Plants. Charlie has just left school and loves being outside. To celebrate his success in finishing school, Granny has given him .... a potato plant!!! . Then Charlie has a bright idea! Maybe he could start a business growing plants. - PowerPoint PPT Presentation
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Propagating Plants
• Charlie has just left school and loves being outside.
• To celebrate his success in finishing school, Granny has given him .... a potato plant!!!
• Then Charlie has a bright idea!
• Maybe he could start a business growing plants.
• But, how could Charlie use his one plant to get lots of plants??
Now try, taking Cuttings• Plant stem is cut and grown in water/moist
compost to develop roots.• Hormone powder accelerates root
formation
Success!• Charlie is delighted with how well his
cuttings are growing!
• Although he started with only one plant, he now has 6 healthy, growing plants. Calculate the percentage increase in the number of plants.
Competitors• Charlie’s main competitors have been recording
there vegetable yield over the past few years.
• Calculate their total vegetable yield per year.
Vegetable
Yield per Year (%)
Potato 68Carrot 43Leek 56
• To help his cuttings to continue growing effectively, Charlie has moved his cuttings into a polytunnel.
• Do you agree with Charlie’s decision? Why?
• After a few weeks the cuttings seem to be struggling.
• Charlie decides to increase the carbon dioxide concentration in the tunnel. How might this affect the cuttings?
Advantages of Artificial Propagation
• Quick way to produce a large number of plants
• Plants will be identical to the parent• Rare plants can be saved from
extinction