Greenhouse Management Dual Credit - Chapter 5: Plant Reproduction

bulbs and similar organs

vegetative structures termed either bulbs, corms, tubers, tuberous roots, or rhizomes are modified stem or root tissues that store food during dormant periods

clone

when many plants are reproduced asexually from a single plant

Propagation

when reproduction id deliberately controlled and manipulated

cuttings

when segments of roots, leaves, or stems are cut off a plant and placed under appropriate environmental conditions

Grafting

with compatible species, the upper portion of one plant can be joined with the lower portion of a different plant, and they will fuse to become a single new plant

Meiosis

A sequence of cell divisions that reduces the number of chromosomes in each cell by half

stolons

aerial shoots that take root after coming into contact with the soil

division of the crown

as shrubs and herbaceous perennials mature, the crown enlarges and can be divided into root shoot units and will grow into separate plants

Homologous chromosomes

associate in pairs during meiosis

sucker shoot

certain plants produce new shoots from adventitous buds that develop on the roots

Cytokinesis

completes the division of the non-nuclear remainder of the cells contents and the formation of a new cell wall

ramet

each individual plant within the clone

gametes

fusion of two sex cells

Scarification

is the breaking of a seed coat otherwise impervious to water to permit water uptake by the embryo

Mitosis

normal division of a cell nucleus that occurs as a plant grows

zygote

one set of chromosomes that form two sets of chromosomes

Sexual reproduction

plant reproduction that results in the formation of seeds

clonal varieties

plants of horticultural importance that are propagated almost totally by asexual means

Homozygous chromosomes

plants that are produced are nearly exact opposites

layering

roots develop on a stem that is still attached to the parent plant

runners

stems that grow along the ground and form new plants at one or more of their nodes

Stratification

the exposure of the seeds to low temperatures

Reproduction

the process by which plants or animals duplicate themselves

budding

type of grafting in which buds of one plant are implanted into the stem of another compatible species

Asexual reproduction

vegetative process that eliminates genetic variation