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A-Level Biology OCR A

Water Success Cuttings Stem Rooting Loss Transpiration Reduces

Six ways to improve the success rate of cuttings include using non-flowering stems, making oblique cuts to maximize surface area, applying rooting hormone, reducing the number of leaves, maintaining consistent watering, and covering the cutting with a plastic bag to maintain humidity.

To increase the success rate of cuttings, use non-flowering stems, make oblique cuts, apply rooting hormone, reduce leaf number, keep cuttings watered, and cover them with a plastic bag.

Front Describe 6 ways in which the success rate of taking cuttings can be increased.
Back Improving cuttings success rate:
  • Use non-flowering stem - all plant resources available for growing new roots
  • Make an oblique cut in stem - maximises surface area available for rooting powder/new root dev
  • Use hormone rooting powder 
  • Reduce leaves to two or four - minimises loss of water by transpiration while maintaining photosynthesis
  • Keep cutting well watered - reduces water stress
  • Cover the cutting with a plastic bag for a few days - keeps air humid and reduces water loss by transpiration

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