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Flashcards in VEGETATIVE PROPAGATION Deck (71)
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1

NAME 4 LIMITATIONS OF VEGETATIVE PROPAGATION

1. lack of genetic variation leads to loss of vigour
2. very few improvements or variations occur due to lack of genetic material exchange
3. some methods require specific skills
4. pests and diseases can be transmitted
5. specific equipment and space required
6. amount of healthy parent material may be limited

2

NAME 2 PESTS THAT CAN DAMAGE PLANTS DURING ROOTING PROCESS

1. slug
2. rabbit
3. vine weevil
4. sciarid fly

3

NAME 2 DISEASES THAT CAN DAMAGE PLANTS DURING ROOTING PROCESS

1. botrytis
2. damping off

4

NAME 6 WAYS TO AVOID PEST AND DISEASE DURING PROPAGATION

1. select healthy plant material
2. use sterile potting media
3. use clean water
4. use clean tools and equipment
5. keep hands clean
6. ventilate adequately
7. monitor for pest and disease
8. take cuttings from top of plants

5

NAME 4 FACTORS THAT AFFECT PLANT HEALTH OTHER THAN PEST AND DISEASE

1. scorch
2. low light level
3. drought
4. low temperature
5. nutritional status of growing media
6. water logging

6

EXPLAIN THE TERM 'CLONE'

A clone is a group of genetically identical plants derived by vegetative propagation from a single plant

7

STATE 4 HORTICULTURAL BENEFITS OF RAISING PLANTS BY VEGETATIVE PROPAGATION

1. All propagated plants should be identical
2. Only method possible for sterile plants e.g. seedless grapes
3. Plants may mature faster
4. Seed dormancy issues are avoided
5. Pollination not necessary
6. Juvenile plants can be used
7. May be possible to produce large numbers from one plant

8

NAME 4 NATURAL METHODS OF VEGETATIVE REPRODUCTION

1. Bulbs e.g. Lilium regale, Narcissus pseudonarcissus
2. Corms e.g. Crocosmia crocosmiflora 'Lucifer', Crocus chrysanthus
3. Rhizomes e.g. Iris germanica
4. Stolons/runners e.g. Ajuga reptans, Fragaria x ananassa
5. Suckers e.g. Kerria japonica
6. Stem tubers e.g. Solanum tuberosum
7. Root tubers e.g. Dahlia 'Bishop of Llandaff'
8. Layering e.g. Rubus fruticosus

9

DESCRIBE THE COLLECTION OF PROPAGATION MATERIAL FOR SEMI-RIPE CUTTINGS

1. From plant which is true to type
2. From healthy plant
3. From this seasons growth
4. From shoot without flower buds
5. In late summer/early autumn
6. In early morning
7. Cut just above a node
8. Place in polythene bag and label

10

NAME 2 SUITABLE PLANTS FOR PROPAGATION BY SEMI-RIPE CUTTINGS

1. Fatsia japonica
2. Choisya ternata
3. Weigelia florida
4. Rosmarinus officinalis
5. Viburnum tinus
6. Rosmarinus officinalis

11

DESCRIBE PREPARATIONOF SEMI-RIPE CUTTINGS
(UP TO INSERTION)

1. Cut just below a node
2. Cut to 10-15 cm length
3. Remove soft tip
4. Remove basal leaves to give 5 cm clear stem
5. Wound cuttings if appropriate
6. Dip in medium strength rooting powder

12

LIST 6 CHARACTERISTICS OF MATERIALS USED AS ROOTING MEDIA FOR VEGETATIVE PROPAGATION

1. Open and well aerated
2. Moisture retentive without being waterlogged
3. Neutral to slightly acidic pH
4. Light in weight
5. Free from pest and disease
6. Low in nutrients

13

LIST 4 MATERIALS USED AS GROWING MEDIA FOR VEGETATIVE PRODUCTION OF PLANTS

1. Sand/grit
2. Peat
3. Perlite
4. Coir
5. Composted shredded bark
6. Vermiculite

14

LIST 4 METHODS OF ARTIFICIAL VEGETATIVE PROPAGATION

1. Budding and grafting
2. Micropropagation
3. Hardwood, semi-ripe and softwood cuttings e.g. Fuchsia
4. Division of crowns e.g. Alchemilla mollis
5. Leaf cuttings e.g. Camellia
6. Root cuttings .eg. Papaver orientale
7. Layering e.g. Clematis

15

WHAT IS VEGETATIVE PROPAGATON

Vegetative propagation is asexual propagation using parts of the plants e.g. stem, leaf and roots, as opposed to propagation by seed. It may be natural or artificial

16

DESCRIBE PROPAGATION OF ALCHEMILLA MOLLIS BY DIVISION

1. Lift during dormant season (October- March)
2. Lift plant with fork
3. Remove soil by shaking or washing
4. Keep roots moist/covered
5. Remove dead/damaged roots
6. Separate with 2 garden forks, secateurs or knife
7. Divide into sections depending on size and age of plant
8. Discard old, central growth
9. Trim roots back to healthy growth

17

DESCRIBE PROPAGATION BY SIMPLE LAYERING

1. Layering should be carried out in dormant season
2. Choose young, flexible shoot
3. Choose shoot free from pest/disease
4. Make a 2-5 cm incision along stem 30 cm from tip through a leaf node
5. apply hormone rooting powder to wound
6. mark point where shoot touches ground with bamboo cane
7. dig a 15 cm deep trench back to plant from bamboo cane
7. secure wounded stem to ground in trench with wire peg
8. secure tip to bamboo cane to keep upright
9. cover in trench, firm and water

18

NAME 2 PLANTS SUITABLE FOR PROPAGATION BY LAYERING

1. Cornus alba
2. Cotinus coggygria
3. Corylus avellana
4. Camellia japonica

19

NAME 2 PLANTS SUITABLE FOR PROPAGATION BY SOFTWOOD CUTTINGS

1. Lavandula angustifolia
2. Fuchsia magellanica
3. Pelargonium zonale
4. Clematis spp
5. Fatsia japonica
6. Choisya ternata
7. Viburnum tinus

20

DESCRIBE COLLECTION OF MATERIAL FOR SOFTWOOD CUTTINGS

1. Collect in May/June for shrubs
2. Collect from plant true to type and free of disease
3. Collect in early morning when turgid
4. Collect from juvenile lateral shoot without flower or buds
5. Cut just above a node
6. Place in polythene bag and label

21

DESCRIBE PREPARATION OF SOFTWOOD CUTTING UP TO INSERTION

1. Trim to below a node to 10-15 cm
2. Remove basal leaves and trim larger leaves
3. Dip in low strength rooting powder

22

WHAT IS JUVENILITY IN VEGETATIVE PROPAGATION

1. A juvenile plant has not reached flowering/ fruiting stage
2. A juvenile plant roots more easily due to presence of natural rooting hormones
3. The juvenile plant may appear different to the mature plant

23

NAME 2 PLANTS SUITABLE FOR PROPAGATION BY ROOT CUTTINGS

1. Papaver orientale
2. Primula denticulata
3. Anemone x hybrida
4. Acanthus mollis
5. Rhus typhinia

24

DESCRIBE COLLECTION OF MATERIAL FOR PROPAGATION BY ROOT CUTINGS

1. Usually in dormant season ( but late summer for Primula denticulata)
2. Material should be healthy, true to type and of suitable thickness
3. Lift material carefully
4. Make clean cuts indicating polarity and wash

25

DESCRIBE PREPARATION OF ROOT CUTTINGS UP TO INSERTION

1. Make clean horizontal cut at proximal end and oblique cut at distal end of 5 cm of fat roots which will be inserted vertically
2. Make horizontal cuts on thin roots like Primula denticulata which are placed horizontally onto soil
3. Apply fungicidal dip

26

NAME 3 TYPES OF FACILITY USED TO PROPAGATE PLANTS

1. mist bench for softwood, leaf and semi-ripe cuttings
2. fogging unit
3. cold frame for root, semi-ripe and hardwood cuttings
4. heated propagator for softwood ,leaf and semi-ripe cuttings
5. heated frame

27

DEFINE STICKING IN HORTICULTURE

The preparation of cutting material and insertion into container or open ground

28

NAME 4 ENVIRONMENTAL FACTORS TO BE CONTROLLED IN A PROPAGATING FACILITY

1. Control temperature to provide warmth for roots and shade for leaves
2. Control humidity
3. Provide drainage
4. Control ventilation and airflow

29

DESCRIBE AFTERCARE OF CUTTINGS AFTER REMOVAL FROM PROPAGATING FACILITY

1. remove dead/dying leaves
2. monitor for pests and diseases
3. harden off i.e. gradually acclimatise to less protected conditions by increasing ventilation, decreasing temperature and increasing sunlight
4. pot up

30

NAME 2 METHODS OF NATURAL VEGETATIVE PROPAGATION WITH A NAMED PLANT EXAMPLE

1. Bulbs e.g. Narcissus pseudonarcissus
2. Corms e.g. Crocus chrysanthus, Crocosmia croscosmiflora
3. Rhizome e.g. Iris germanica
4. Stolon e.g. Rubus fruticosa; Fragraria ananassa