Biology » Plant Reproduction » Asexual Reproduction

Summarizing Asexual Reproduction

Summary

Many plants reproduce asexually as well as sexually. In asexual reproduction, part of the parent plant is used to generate a new plant. Grafting, layering, and micropropagation are some methods used for artificial asexual reproduction. The new plant is genetically identical to the parent plant from which the stock has been taken. Asexually reproducing plants thrive well in stable environments.

Plants have different life spans, dependent on species, genotype, and environmental conditions. Parts of the plant, such as regions containing meristematic tissue, continue to grow, while other parts experience programmed cell death. Leaves that are no longer photosynthetically active are shed from the plant as part of senescence, and the nutrients from these leaves are recycled by the plant. Other factors, including the presence of hormones, are known to play a role in delaying senescence.

Glossary

apomixis

process by which seeds are produced without fertilization of sperm and egg

cutting

method of asexual reproduction where a portion of the stem contains notes and internodes is placed in moist soil and allowed to root

grafting

method of asexual reproduction where the stem from one plant species is spliced to a different plant

layering

method of propagating plants by bending a stem under the soil

micropropagation

propagation of desirable plants from a plant part; carried out in a laboratory

monocarpic

plants that flower once in their lifetime

polycarpic

plants that flower several times in their lifetime

scion

the part of a plant that is grafted onto the root stock of another plant

senescence

process that describes aging in plant tissues

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