AGR232 chp7:Principles and Techniques of Propagation by Grafting

What is grafting in plant propagation?

• Joining two plants with roots only

• Inserting a scion into the rootstock to grow as one plant

• Rooting a stem directly in the soil

• Fusing two flowers together

What is a scion in grafting?

• The root system of a plant

• The part of the plant with buds or shoots

• A soil layer for growth

• The cambium layer

What is the primary purpose of grafting?

• To enhance seed germination

• To create a new variety

• To combine beneficial traits of two plants

• To improve photosynthesis

Which of the following is NOT a purpose of grafting?

• Repairing injured trees

• Producing dwarf plants

• Enhancing root development in seeds

• Ensuring pollination

How can grafting help plants resist diseases?

• By using resistant rootstocks

• By avoiding pruning

• By preventing flowering

• By reducing water absorption

Which grafting purpose helps in producing multifruited plants?

• Bridge grafting

• Combining multiple scions onto one rootstock

• Using dwarfing rootstocks

• Inarching

What is essential for the formation of a graft union?

• Root pruning

• Close contact between vascular cambiums of scion and rootstock

• High humidity levels

• Removing leaves from scions

What process is similar to the formation of a graft union?

• Water absorption

• Root development

• Healing a wound

• Photosynthesis

Which tissue bridges the graft union first?

• Phloem

• Cambium

• Xylem

• Epidermis

What does graft compatibility mean?

• Ability of two plants to unite successfully

• Growth of rootstock without scion

• Dormancy of the scion after grafting

• Reduction in photosynthesis