Presentation Transcript
Asexual Propagation: Asexual Propagation
Softwood & Semi-hardwood stem cuttings: Softwood & Semi-hardwood stem cuttings When to take cuttings
after current or present seasons growth has partially hardened
should be able to bend
Stem Cuttings: Stem Cuttings Collecting cutting wood
parent plant that has made 2 to 6 inches new growth during current year
early morning is the best time to take cuttings
Stem Cuttings: Stem Cuttings Place cutting in water immediately after taking cutting
be sure to remember which is the top of the cutting
cut bottom at an angle
cut top straight across
Stem Cuttings: Stem Cuttings Preparing Container & Rooting media
containers must have holes in the bottom for drainage
medium should be sterile
mix medium before wetting to assure uniform mixture
Stem Cuttings: Stem Cuttings Making the cuttings
make as many 3 or 4 inch cuttings as possible from each shoot
cut bottom at an angle
allows more surface area to contact rooting media for water absorption
Stem Cuttings: Stem Cuttings include 2 or 3 buds on each cutting
On hollow stems, cut just below the node on the bottom and just above the node on top
Stem Cuttings: Stem Cuttings Treating and Inserting Cutting
“Rootone F” rooting hormone
Chemicals which help cuttings grow more quickly and grow a larger number of roots
rooting hormones may contain fungicide
Stem Cuttings: Stem Cuttings place cutting in medium no more than 2 inches deep
Do not press media around cutting, water to settle around it
label cutting, include name of rooting hormone used
Stem Cuttings: Stem Cuttings Controlling the atmosphere
Keep R.H. close to 100%
plant loses water through leaves (transpiration) can’t take up water fast enough to compensate without roots.
Stem Cuttings: Stem Cuttings Enclose containers in clear plastic
place out or direct sunlight
keep temp down
Stem Cuttings: Stem Cuttings Rooting
Check for roots by holding cutting and tugging gently
resistance = roots developing
growth on the tips or sides is normal, but does not indicate root growth
Stem Cuttings: Stem Cuttings harden off when root ball is 2-3 inches
after hardening off can be “lined out”
planted outside
Herbaceous Cuttings: Herbaceous Cuttings Succulent greenhouse plants
can make numerous cuttings from parent plant
cuttings 2-6 inches long
Herbaceous Cuttings: Herbaceous Cuttings remove bottom leaves
roots will grow from the node where leaves were attached
Use rooting hormone- ROOTONE
not required
speeds rooting process
Herbaceous Cuttings: Herbaceous Cuttings high humidity
bottom heat helps speed rooting
Herbaceous Cuttings: Herbaceous Cuttings Leaf Cuttings
African Violet
Use leaf and petiole
Herbaceous Cuttings: Herbaceous Cuttings Leaf-bud cuttings
cut bud and leaf from stem
cut leaf to a smaller size
requires less moisture
Herbaceous Cuttings: Herbaceous Cuttings firm into soil, water and cover in a moisture right container.
Can make many more cuttings from parent plant than with stem cuttings
rooting hormone should be weaker strength.
Herbaceous Cuttings: Herbaceous Cuttings Root Cuttings
Can be made from any plant that will sprout or sucker from the root.
Cut roots 1/8 to 1/2 inch in diameter in pieces 1-4 inches long.
Herbaceous Cuttings: Herbaceous Cuttings place in sand in a flat
water
cover with glass or plastic
when new shoots sprout move plants to nursery row
ex: raspberry