LECTURE 5

Question 1

How much seed is needed?

Answer 1

Containerized - 1-5
Bareroot - 2-10
Seed Spotting - 5-15
Broadcast seeding - 5-30
Aerial seeding - 50-150

Question 2

Uniqueness of seeds in forest regeneration

Answer 2

Seed as unique genetic constitutions > genetic variation in offsprings > enhanced ecological stability

• Seeds produced in large numbers
• Readily available in most cases, yearly, or at longer intervals
• Seeds as small concentrated packages of plants-to-be containing nutrients for the establishment of the plant
• Seeds more resistant to damage and environmental stress than vegetative propagules
• Many seeds can be stored for long periods of time

Question 3

SEED SUPPLY

Answer 3

• you buy or you produce
• a man reaps what he sows

Question 4

Impacts of using high quality seeds

Answer 4

1. Good quality seeds
2. Good quality seedlings
3. High quality plantations
4. Higher yield, higher return on investment, more employment, reduced poverty

Question 5

Types of seed source

Answer 5

• uncontrolled collection areas
• controlled general collection areas
• seed stands/elite trees
• seed production areas
• seed orchards

Question 6

Bases for classification of seed sources

Answer 6

• precision with which seed origin is described
• amount of supervision and independent inspection during seed collection, processing, and handling
• degree of selection
• seed testing
• progeny testing

Question 7

Seed production areas

Answer 7

• natural stands or plantations consisting of phenotypically superior trees that are managed as immediate sources of quality seeds for operational planting

Question 8

Initial consideration in selection of stands for SPAs

Answer 8

• seed demand
• no. of trees/area required to produce the quantity of seeds demanded
• quality of existing seed sources
• status of current seed collection
• information on other potential seed sources
• development of seed orchards