Plant Propagation By Mark J. Arena Clemson Extension Service

Horticulture Industry Vocabulary Language Professionalism

Plant Propagation The process of multiplying the # of plants by both asexual and sexual means.

Asexual Propagation Manipulation of plant parts (tissue) from a plant which generates into a new plant.

Liner A plant which is 1 yr old produced by seed or asexually

Prop. of Specialized Stems and Roots Separation Bulbs - bulblets > offsets > separate, repot = new plant

Prop. of Specialized Stems and Roots Division - used to prop. tuberous roots. Need a shoot bud or eye = a new plant. Ex: potato, dahlia, tuberous begonias

4 Conditions for B/G Scion and Stock - Compatible Cambiums properly aligned Physiological stage Maintenance of union

Sexual Propagation Increase of plants through seeds formed from the union of gametes. Pollen(M) + Egg(F) = Seed

Propagation Structures Greenhouses - control environmental conditions Cold Frames - provide no heat Hotbeds - obsolete

Propagule Newly propagated plant – produced either asexually or sexually – roots, stems, and leaves

Mist Systems Intermitten mist Overhead system In-bench mist system *Transpiration & turgidity

Sexual Prop. Seed propagation - sown Stock plants Chilling requirements Heterozygous Cross-pollinated

Stock Plant A plant maintained under optimal conditions used to collect material – seeds – cuttings

Types of Cuttings Soft wood Semi-hardwood Hardwood

2 Stages that require environ. control Rooting Acclimation

Factors Effecting Rooting Hormones Wounding Juvenility Handling

Factors cont. Type of Media Fertilization Envir. Conditions Physiological cond.

LAYERING Mounding & Stooling Air-layering induce rooting on the stem of a plant

Micropropagation T.C. Produces a mass of specific clones Requires special conditions More scientific than others

Adventitious Roots or Shoots When new growing points are initiated on a vegetative structure (roots, stems, or leaves)