Plant Propagation Seeds.

Plant Propagation Seeds

SLM and KUD Unit Essential Question: How are plants propagated? Lesson Essential Question: What medium is used to propagate seedlings?

SEEDS Break into 3 groups Draw a picture to represent what the cards are trying to explain NO WORDS 20 minutes

Greenhouse Log Every time in greenhouse, record & hand in for grade

Propagation Propagating= reproducing Most popular method: seeds Sexual process, requires union of pollen and egg From same parent (self-pollination) or separate (cross-pollination

Propagation Hybrid- offspring of two cultivars of one plant, each has certain characteristics desired in new plant Do not plant seeds of hybrid

Proper environment & conditions
Seeds Quick and easy Proper environment & conditions Temperature, moisture, light & medium

Treatment for Germination
Hard seed coat, soaked or scratched before able to germinate Some require cold rest period below 37*F for 8 wks plus Some must have alternate wet & dry

Treatment for Germination
Some must have light Some must have dark Follow directions on pack

Basic Parts Seed Coat- covering of seed, protects embryonic plant Endosperm- food storage tissue that nourishes during germination Embryo- new plant that developed.

Basic Parts

Choosing Seeds Choose locally grown Choose tested for that growing season Purchase from reliable dealer Hybrid varieties Heavyweight or primed seeds

Choosing Seeds Primed or enhanced to:
Activate growth hormones & enzymes Less chance for insects & disease

Medium Ideal: good pH, nutrients, porous, uniform in texture, sterile

Types of Medium Soil: loam composed of 45% mineral matter, 5% organic matter, 25 % air, 25% water

Types of Medium

Types of Medium Construction grade sand: more porous Does not hold nutrients

Types of Medium

Types of Medium Peat moss: partially decomposed vegetation preserved under water. High capacity to hold water. 1% nitrogen, low in phosphorus & potassium

Types of Medium

Types of Medium Horticultural Grade Perlite: gray- white material of volcanic origin. Expands when heated. Provide good drainage & aeration

Types of Medium

Types of Medium Vermiculite: light-weight , has pH of 7, high water holding capacity

Types of Medium

Types of Medium Jiffy mix: equal parts of shredded sphagnum moss, peat, terrlite vermiculite, & nutrients to sustain initial plant growth

Types of Medium

Medium Usually mix of 1 or more of the previous

Testing Medium Create a mix that you think would work good for a seedling. Plant seeds (5) and test it to see what works. Compare with others after 4 weeks.

Exit Question Answer the leq: What medium is used to propagate seedlings?

Plant Propagation Types of Seeding

Warm-up Why is the germinating medium important?

LEQ How do we plant a seed?

Indirect seeding Process in which seed is sown in a place separate from where the plants will eventually grow Transplanting happens 1 or 2 more times

Indirect seeding Flats: made of plastic, size determined by # of seeds to grow Medium placed in & leveled off ½ to ¾ inch below top of flat Plant seeds in rows

Indirect seeding Individual cells in cavity seedling trays Flats made up of many small pots 1-2 seeds per cell, later thinned Transplant with less damage

When to seed Seeds must be planted on certain dates so the seedlings are ready for transplanting at the proper time

Seed to market chart Using the popular bedding plants we will plant, create a chart to display date planted by to be ready for market sale. 30 minutes

Sowing Seeds To plant How to sow? ALWAYS BE SURE TO PLACE A LABEL WITH YOUR NAME & PLANT NAME!!!!

Watering Water lightly with watering cans Be careful not to wash out seeds Water from bottom when possible

Conditions for Germination
Semi shaded area of greenhouse Receive bottom heat Cover with plastic No fertilizer until true leaves have developed

Transplanting When true leaves have formed, ready to be transplanted Page 73 & 74 transplanting procedure My procedure

Direct Seeding Seeds planted in permanent growing area What plants?

Direct Seeding Corn, melons, beans, beets, peas, lettuce, carrots & other veggies

Activity Using your chart that you created, what seeds should be planted first? Each student will plant this correctly as taught in this lesson Show me before completing

Review How do we plant a seed?

Softwood & Semihardwood Cuttings
Plant Propagation Softwood & Semihardwood Cuttings

Warm-up Explain the steps in transplanting.

LEQ How do we propagate a softwood & semihardwood cutting?

Asexual reproduction To produce clones of plants that do not produce seeds & are difficult to grow from seeds

Cuttings Leaves or pieces of stems or roots used for propagating a plant Various kinds Require same conditions to grow as seedlings with added light

Cuttings Root formation simulated because of interruption of carbohydrates, hormones & other materials from leaves & growing tips Rooting hormones used to aid in root formation

Taken after current season’s growth has partially matured Wood should be bendy Active terminal growth

Find parent 2-6 inches of new growth Make sure plant full of water Cut in morning (most moisture) Immediately place in bucket of water

Made when leaves on them Leaves help keep cutting right side up Cut at 45* angle on bottom, straight at top

Made when leaves on them Leaves help keep cutting right side up Cut at 45* angle on bottom, straight at top Take back to table

Flat, pot or container 4 inches deep with holes in bottom Sterile medium ½ perlite & ½ sphagnum moss Medium varies Soak medium night before

Make 3-4 inch cutting from stem or shoot Very sharp knife/pruning shears Include 2-3 buds on each cutting Treat with proper concentration of rooting hormone (fungicide included)

Cutting immediately placed in rooting medium to ½ its length, no more then 2 inches deep LABEL CUTTING!!

Keep humidity very high (Transpiration) Plastic bag to control No direct sunlight Tug gently after time to see if rooting begun, leave for 7-10 more days if not

Hardening off- prepare for transplanting Open plastic a little each day When completely open, water as normal, fertilizer at 1/4th strength Ready to be transplanted after 14 days

Herbaceous Cuttings Made from succulent greenhouse plants – geranium, chrysanthemum, coleus, carnation, swedish ivy, wandering jew, begonia Cuttings 3-6 inches long w/leaves on upper to terminal end Same conditions as previous w/bottom heat added

Choose a plant to propagate: Wandering Jew Jade Plant Begonia
Lets Practice!! Choose a plant to propagate: Wandering Jew Jade Plant Begonia Demonstrate proper techniques, be sure to label!!

How do we propagate a softwood & semihardwood cutting?
Exit Question How do we propagate a softwood & semihardwood cutting?

Plant Propagation Micropropagation

Do you think it is easier to make a cutting or to plant a seed? Why?
Warm-up Do you think it is easier to make a cutting or to plant a seed? Why?

What is micropropagation and how can we do it successfully?
LEQ What is micropropagation and how can we do it successfully?

Micropropagation Tissue culture Asexual method using sterilized terminal shoots or lead buds placed on sterile agar gel or other nutrient growing medium Buds or stem tips placed in jar

Micropropagation Tiny sprouts start, pulled off with sterile tweezers, placed in new medium in another container to grow roots Harden off as roots develop Many thousand plants exactly like parent

Micropropagation Used for orchids Only used for professionals

Other types of Softwood Cuttings
Leaf Cuttings African Violet cut base of leaf stem, place in rooting medium Pg 87 figure 7-16

Leaf-Bud Cutting Cut from stem with bud, remove wooden shield of stem, cutting placed in rooting medium with bud in soil Pg 87 figure 7-17

Mallet Cutting 2-4 inch piece of 2 year old wood with current season or 1 year old shoot on it Mallet placed horizontally & covered 1 inch with rooting medium

Root Cuttings Any plant that will sprout from root Place root in container, water well, place clear glass/plastic over Page 88 figure 7-19

Activity Root spider plant in Greenhouse

Plant Propagation Hardwood Cuttings

Warm-up What is important to remember about tissue cultures?

Lesson Essential Question
How do we propagate hardwood cuttings?

Hardwood Cuttings Easiest & least expensive of asexual propagation Prepared in winter Can be shipped long No expensive equipment or storage facility needed

Hardwood V. Softwood/semihardwood
Time of year Hardness (maturity) Absence of leaves Storage

Hardwood Cuttings 6 steps Pg 92 procedure

Selecting Hardwood Cuttings
From current years growth Cut from ends of branches or long shoots from base Collected once dormant Taken all winter

Collecting Hardwood Cuttings
Use sharp knife or hand pruner Label 6-8 inch cuttings for immediate use or stored in cool moist place Cover with sawdust, sand or peat moss to maintain moisture Not too wet or dry

Taking Hardwood Cuttings
Bottom cut just above a node & top about 1 inch above a node or bud Bottom cut 45* angle & top 90*

Storing Hardwood Cuttings
Treated with rooting hormone for better growth Tied in bundles for storage Stored for 6-8 weeks before planting Allows callus to form- root quicker

Storing Hardwood Cuttings
May be buried in sand containers Low enough temp to prevent growth at top First 4 weeks * Lowered to 40* after

Lining out Hardwood Cuttings
Planted outside soon as soil ready in spring (lining out) Prepare soil Place cutting in soil and firmly surround with soil, careful not to put too much pressure on

Lining out Hardwood Cuttings
Mulch to retain moisture Watch growth to make sure roots have formed No extensive care

Activity Propagate 3 hardwood stems Crape Myrtle Forsynthia Dogwood

Plant Propagation Separation & Division

Warm-up What is different between hardwood and softwood propagation?

How can we effectively propagate using separation and division?

Separation Method of propagation in which naturally reproductive organs of a plant detach from the parent plant to become new plants Usually removed during dormant stage

Separation Bulbs & corms Responisble for food storage & propagation of plant Natural process

Bulbs Plant structure containing many parts but primarily composed of leaf scales Outside of foliage leaves are bulblets – produce tiny bulbs that grow into bigger bulbs, separated & planted

Bulbs Splits or slabs –first separated 1 year- round bulb 2 year- second flower bud- double nose- 2 flower stalks Round & double nose sold commercially

Types of Bulbs No special care or handling- tulip bulb- laminate or tunicate, dry membranous outer scales Lily- loosely scaled, cannot withstand handling- nontunicate or scaly, no tough outer cover

Bulbs- Propagation Procedure
Dug & separated after foliage dies back & plant dormant , stored & planted at correct time Washed & cleaned before storage EX: narcissus, hyacinth, grape hyacinth, tulip

Bulbs- Lily Propagation
Much slower rate Mother bulbs split at base to force production of bulblets Flowering bulbs pulled from ground in late August-mid September, kept moist by sprinkling with water

Bulbs- Lily Propagation
Mid-October, placed 4 inches deep & planted 1 inch apart Moved again in September, planted 6 inches deep & apart Then sold as flowering bulbs Should be 7 inches in circumference

Corms Very solid, compact stem with nodes & internodes Very short specialized stem for food storage Covering that protects from injury & drying

Corms- Propagation Development of cormels is means of reproducing Form naturally When dies back, dug up & small cormels separated & grown to larger size

Propagation by division
Method of propagation in which parts of the plant are cut into new sections, each will develop a new plant Use knife or pruners

Rhizomes Underground stems that grow horizontally and produce roots on the bottom & stems on top

Rhizomes- Propagation
Removed by digging underneath with a garden fork or shovel Soil washed off Cut rhizome into sections- make sure each has one eye (bud)

Tubers Swollen end of an underground side shoot or stem Distinguished by eyes- produces separate plant as sprouts, developing a shoot with roots at base Contains stored food for plant until leaves form

Tubers EX: Irish Potato To propagate: Cut tubers into pieces, each must contain one eye Planted same as seeds

Tuberous Roots Thickened roots that contain large amounts of stored food Have buds at stem end

Tuberous Roots- Propagation
Dividing crown, or cluster of roots, when plant is dormant Dug in fall after frost killed top, stored in dry sawdust, peat at * to prevent shriveling or complete drying out

Tuberous Roots- Propagation
In spring, clumps or crowms are cut apart so each has a bud New pieces planted EX: Sweet potato Adventitious buds- sporadic & unexpected places, pulled off & planted

Activity Plant bulbs correctly Correctly separate a plant

Plant Propagation Grafting

Warm-up Why is it important to know about bulbs?

How do we propagate using grafting?

Grafting Two different plants are united to become one Scion- newly installed shoot or top of plant Rootstock- seedling or plant used as bottom half of the graft

Grafting Growing together of tissues Used to rapidly increase # of a plant & give stronger, disease- resistant roots Two plants must be compatible

Grafting Used to: Topwork a large tree Insert a different variety on part of the limbs of a tree for cross pollination To propagate plants that may be difficult to bud

Grafting Requirements
Compatibility- must be related to one another, stock & scion grow together Know what families grow best together

Scion wood- 1 year old & vigorous growth Timing- don’t when stock & scion are dormant Matching of tissues- cambium layer, scion & rootstock must have close contact & held tightly together

Waterproofing- all cut surfaces must be covered with grafting wax, plastic or rubber ties

Whip or Tongue Graft During winter months Small material Fruit trees Scion should contain 3 buds Root piece 4-8 inches & small fibrous roots

Whip or Tongue Graft Grafting cut made below bud on stock, slant at angle, smooth surface Cut on rootstock should be same= even fit Cambium must match growing area at edge of root piece

Whip or Tongue Graft Second cut made on first cut surface in reverse direction, 1/3 of distance from tip & nearly parrallel to first cut Half as long as first cut Pieces slipped together w/tongues interlocking

Whip or Tongue Graft Pieces tightly tied together with plastic propagation tape or rubber bud ties Stored in moist sand or peat moss to heal * After *

Whip or Tongue Graft Then planted in nursery, graft union must be below ground

Side Veneer Graft Effective way to graft evergreens Colorado Spruce grafted w/ blue spruce to obtain shade of blue

Side Veneer Procedure Pencil size Made in early spring Shallow cut made 1 ½ in long made into one side of seedling rootstock Second cut made to remove piece of wood

Side Veneer Procedure Two cuts made on scion to shape it so it fits cut made in rootstock. Scion inserted into rootstock. Cambium layers must match at least one side Scion tied tightly in place mulch

Cleft Graft Used in topworking trees (grafting to rootstock considerably larger than scion

Cleft Graft Procedure Rootstock sawed off at right angle Rootstock split with heavy knife & hammer Split help open with wedge Scion cut in a long, smooth wedge shape

Cleft Graft Procedure Scions placed in rootstock, must make close contact with rootstock for entire distance, must be cut at same slant as the split in the rootstock Cambium of both must match

Stenting Roses Grafting selected scion of desired plant onto a piece of stem that produces good roots

Stenting Grafted stems then placed in rooting chamber for healing & roots to form Treated exactly as a semihardwood cutting

Activity Grafting Video

Plant Propagation Budding

Warm-up What are the 3 types of grafting?

What is the process of budding propagation?

Budding Form of grafting Single bud used instead of scion Many more plants reproduced from same amount of parent wood More quickly Time- during active growth

Budding Steps Plant seeds for seedling rootstock Select variety of budwood to be propagated Determine correct date to bud Cut budwood, label it, & protect it so does not dry out

Budding Steps Perform budding process Check to see if buds taken Cut off rootstock above bud the following spring

T-Budding Small 1-2 yr old seedlings Actively growing, disease resistant, & able to give desired growth Scion & rootstock must be compatible

Collecting Budwood Bud sticks, small shoots of current seasons growth, collected on same day to be inserted Kept wrapped in waterproof paper Vegetative buds necessary for propagation Cut all leaves except 1 for handling

Rootstock Developed for 1 yr, good size Make t-shaped cut to determine if seedling is receptive, if bark separates from wood of stem & is moist and smooth

Cutting & Inserting Bud
Obtain materials 1 person makes cut & inserts bud while other person ties securely T-shaped cut made in the rootstock, corners of bark lifted for easy insert Bud cut from bud stick middle portion with shield of back & sliver of wood

Bud immediately inserted in the T cut until bud shield even w/ top fo T-cut Tie area with bud tie Entire area covered, only bud itself exposed Inspection in 3 weeks, transplanted in 1-2 yrs

Page in book

Chip Budding Used for grapes Done when rootstock not in active growth

Chip Budding Procedure
Pg 117 45* cut made in rootstock ¼ of way thru stem Second cut made 1 ½ in above first cut, extending down to meet first Chip produced removed

Chip Budding Procedure
Bud to be inserted cut from bud stick exactly as chip removed bud is inserted in rootstock & tied with bud tie

Chip Budding Care Cut rootstock off just above bud days for spring budding Fall budding, cut rootstock just above bud the following spring, as growth starts

Activity Cgh

Plant Propagation Layering

Warm-up How do the 2 types of budding differ?

How do we layer to propagate?

Layering Asexual propagation, roots are formed on a stem or root while still attached to the parent plant Stem or root to be rooted is called a layer Layer is cut free from parent only after rooting

Advantages & Disadvantages
Simple but time consuming Few plants started Very high success rate Some plants naturally do this….strawberries, red raspberries, & African Violets

Simple Layering Branch from parent bent to ground, partially covered w/ soil. Terminal end exposed Early spring Water liberally Create a visual organizer to represent the steps in layering page 123

Air Layering Process that eliminated the burrying part of the parent plant Part of plant is slit or girdled (girdle- completely remove bark & cambium around plant) Surrounded by moist growing medium

Air Layering Roots form where plant has been wounded Generally made in spring on wood of previous year Create a visual organizer to represent air layering page

Other methods of layering
Trench layering- mother plant bent to ground & burried in trench, roots form on covered portion of plant, shoots can be separated

Stool Layering- begins with planting of rooted layer in soil, parent plant cut back to soil level, stem covered with soil, as shoots grow, more soil is added. Shoots cut & planted in early spring

Compound Layering- springtime, very similar to simple layering, except stem covered by soil at 2 or more points along length. Stem girdled at point below ground where new roots will form Several plants produced from single stem

Activity Layering on plant

Review Review for test

Plant Propagation Seeds.

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