MG03 Plant Propagation

Which of the following plant parts is not used in asexual propagation?

• stems
• roots
• leaves
• seeds

Hybrid plants are:

• more prone to disease than open pollinated varieties
• genetically diverse
• more productive than open-pollinated varieties
• true-to-type when grown from seed

When storing seeds, it is important to:

• keep seeds in a cool, dry place

• maintain temperatures at 70°F

• provide humidity above 50°F

• place seeds in a plastic zip-lock bag

The process of breaking, scratching, or softening the seed coat so that water can enter and initiate germination is called:

• initiation
• scarification
• forcing
• sprouting

Seed starting media:

• should contain freshly dug garden soil for proper nutrition
• must not be allowed to dry out once germination begins
• should have fertility levels
• should be tightly packed arounds seeds to force out any air

What is the process used to break dormancy that involves placing seeds in a container with moist perlite and refrigerating it for 10-12 weeks?

• hardening
• scarification
• pre-germination
• stratification

Medium sized seeds are best sown:

• on the surface of the medium
• in rows
• at a depth three times the diameter of the seed
• by broadcasting

The ideal time to transplant seedlings to cell packs or other containers is when the:

• seeds germinate
• first true leaves appear
• seedlings have 6-8 leaves
• seedlings get tall and leggy

Hardening can be accomplished by all of the following except:

• lowering temperatures
• decreasing relative humidity
• giving less water
• applying half-strength, high nitrogen fertilizer

Stem cuttings taken in fall or early winter when the plant is dormant are called:

• softwood
• hardwood
• herbaceous
• semi-hardwood