PLANT REPRODUCTION

У

 

OBJECTIVES

Upon completion of this chapter, you should be able to

• describe the characteristics of sexual and asexual reproduction in plants.

• describe the processes of mitosis and meiosis.

• list the most common methods of propagating plants.

• recognize the contributions of Mendel to the science of genetics.

• discuss methods of plant improvement.

KEY TERMS

reproduction

cytokinesis

grafting

propagation

scarification

budding

plant propagators

stratification

tissue culture

sexual reproduction

clone

apomictic embryos

haploidal

ramet

chromosomes

diploidal

clonal varieties

gene

zygote

runners

gametes

meiosis

stolons

phenotype

homologous chromosomes

sucker

monohybrid cross

homozygous

bulbs

dihybrid

asexual reproduction

layering

hybrid vigor

mitosis

cuttings

PLANT REPRODUCTION DEFINED___________________

When organisms duplicate themselves, the process is termed reproduc­tion. Although only partially understood, plant reproduction is recog­nized as a complicated process that results in the multiplication of cells and the organisms that they make up. When reproduction is deliberately

Подпись: 1. Diploidal cell at the beginning of prophase The cell is in a dip- loidial condition and termed a zygote. The chromo-somes in the nucleus become short and thick.
controlled and manipulated, it becomes propagation. Ornamental horticulturists who control the reproduction of plants are called plant propagators. In large operations, this can be a full-time occupation.