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Flashcards in Seeds in Plant Propagation Deck (38)
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1

WHAT IS A SEED

A seed is the product of sexual reproduction in a seed bearing plant. The seed forms from the fertilised ovule into a plant

2

NAME 2 FEATURES OF AN ORTHODOX SEED

Orthodox seeds are dry and can be stored at cool temperatures for years

3

NAME 2 FEATURES OF A RECALCITRANT SEED

A seed which is high in fats and does not store well

4

NAME 2 SEEDS REQUIRING SHORT TERM COOL MOIST STORAGE

Aescolus hippocastanum, Quercus robur
(recalcitrant)

5

STATE 4 STORAGE FACTORS THAT MAY AFFECT SEED VIABILITY

Time , Temperature (cool temp,1-5 slows respiration), Moisture (keep airtight), Pests (collect from healthy plants)

6

WHAT IS SEED VIABILITY

A viable seed has a living embryo and the capability of germinating

7

WHAT IS EPIGEAL GERMINATION

In epigeal germination the hypocotyl elongates to bring the cotyledon above ground where it photosynthesises for short period

8

NAME AN EXAMPLE OF EPIGEAL GERMINATION

Phaseolus vulgaris, Helianthus annuus

9

WHAT IS HYPOGEAL GERMINATION

The epicotyl elongates to bring the plumule above ground and the cotyledon remains below ground

10

NAME AN EXAMPLE OF HYPOGEAL GERMINATION

Vicia faba; Zea mays

11

NAME 4 LIMITATIONS OF PROPAGATING FROM SEED

1. some plants produce no viable seed
2. storage may not be easy or for possible for prolonged period
3. plants may not be uniform
4. may take long time to maturity
5. germination may be difficult due to dormancy factors

12

NAME 4 BENEFITS OF PROPAGATING FROM SEED

1. sexual reproduction creates diversity of plant characteristics and increased vigour due to genetic variation
2.diversity allows for adaptation to environmental change
3. seed can be stored and transported easily
4. seed can be harvested by gardener, less skill needed
5. potential for producing large number of plants
6. may be possible to avoid pest and disease transmission
7. seed allows for wide dispersal
8. only method available for annuals and biennials

13

NAME 4 PLANTS PROPAGATED FROM SEED

1. Nigella damascena
2. Digitalis purpurea
3. Daucus carota
4. Lactuca sativa
5. Solanum lycopersicum
6. Quercus robur

14

NAME 4 HORTICULTURAL USES OF SEED

1. Lawns eg Festuca rubra subsp rubra
2. Bedding plants eg Tagetes patula
3. Fruits eg Solanum lycopersicum
4. Annuals eg Lathyrus odoratus
5. Vegetables eg Daucus carota
6. Native trees eg Quercus robur

15

DESCRIBE PHASEOLUS VULGARIS SEED HARVESTING

1. Harvest when plant fully ripe (brown)
2. from plant free of disease and pest
3. in dry weather
4. from plants that are true to type

16

DESCRIBE PHASEOLUS VULGARIS SEED SEPARATION AND CLEANING SEED

1. separate undamaged, fully ripe seeds carefully from pods
2. grade and eliminate small seeds
3. dry on paper for 7-10 days

17

NAME 4 CONDITIONS FOR STORAGE OF PHASEOLUS VULGARIS SEED

1. dry seed
2. cool, frost free conditions
3. paper envelope or bag in airtight container with silica gel
4. labelled

18

NAME 2 STORAGE CONDITIONS FOR RECALCITRANT SEED

1. moist
2. cool
3. for short periods only

19

DESCRIBE SOLANUM LYCOPERSICUM SUITABLE FOR SEED COLLECTION

1. fruit should be ripe and soft
2. fruit should be dry
3. plant should be true to type and healthy

20

DESCRIBE SOLANUM LYCOPERSICUM SEED MACERATING AND SEPARATING

1. scoop seeds from flesh
2. place seeds with attached flesh into bowl/bucket of water
3. allow to ferment at room temperature to remove gelatinous coating which inhibits germination
4. place in fresh water after few days and remove dead seeds and debris from surface

21

DESCRIBE CLEANING AND DRYING OF SOLANUM LYCOPERSICUM SEED

1. rinse
2. spread on paper/glass to dry fully
3. store in cool dry place

22

WHAT IS SEED DORMANCY

A condition where seeds do not germinate despite suitable environmental conditions

23

LIST 4 ENVIRONMENTAL FACTORS REQUIRED FOR GERMINATION

1. water for chemical processes
2. oxygen for respiration
3. warm temperature to sustain growth
4. appropriate light level for the plant

24

HOW ARE THE CORRECT CONDITIONS FOR GERMINATION PROVIDED INDOORS

1. water trays before and after sowing
2.provide growing media with good air filled porosity
3. provide heat in propagator or bottom heat of 18-20
4. cover seeds or not as necessary

25

NAME 1 VEGETABLE, 1 HARDY ANNUAL, 1 HALF HARDY ANNUAL, 1 PERENNIAL AND 1 GRASS THAT CAN BE PROPAGATED BY SEED

1. Daucus carota; Lactuca sativa
2. Nigella damascena; Helianthus annuus
3. Zinnia elegans,, Cosmos bipinnatus, Lobelia erinus
4. Echinops ritro, Echinacea purpurea, Aquilegia vulgaris
5. Lolium perenne; Festuca rubra

26

STATE MEANING OF TESTA AND COTYLEDON

Testa is the protective seed coat formed from integuements around ovule
Cotyledon is the seed leaf which may store energy; maybe one or two

27

STATE MEANING OF RADICLE AND PLUMULE

Radicle is the embryonic root
Plumule is the embryonic shoot

28

STATE MEANING OF EPICOTYL AND HYPOCOTYL

Epicotyl is the part of the stem between cotyledon and true leaves
Hpocotyl is part of stem between cotyledon/embryo and radicle/root

29

NAME 2 VEGETABLE CROPS PROPAGATED BY SEED

1. Daucus carota (carrot)
2. Vicia faba (broadbean)
3. Pisum sativum (pea)
4. Lactuca sativa (lettuce)

30

STATE 2 CONDITIONS REQUIRED FOR VEGETABLE SEED STORAGE

1. Cool temperature to slow metabolism
2. Dry atmosphere using air tight container and/or silica gel