1 / 9

24.3 Plant Propagation and Agriculture

24.3 Plant Propagation and Agriculture. Essential Question’s What is plant propagation?. Vegetative Reproduction. Vegetative reproduction – method a asexual reproduction that produces new plants from stems, plantlets, and underground stems

hinda
Download Presentation

24.3 Plant Propagation and Agriculture

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 24.3Plant Propagation and Agriculture Essential Question’s What is plant propagation?

  2. Vegetative Reproduction • Vegetative reproduction – method a asexual reproduction that produces new plants from stems, plantlets, and underground stems • Plants grows by mitosis alone – no sexual reproduction • Enables plant to produce may offspring genetically identical to itself • Plants can reproduce very quickly since it does not involve pollination or seed formation

  3. Plants can also reproduce by growing horizontal stems called stolons. • Strawberry plants are examples • Stolons produce roots when they touch the ground • Some plants like bamboo grow underground stems that allow plants to send up new shoots

  4. Stolons of a Strawberry Plant

  5. Plant Propagation • Propagation uses cuttings, grafting, or budding to make many identical copies of a plant or to produce offspring from seedless plants. • Plant hormones are often used to stimulate cuttings to grow • Grafting and budding are used to reproduce seedless plants and woody plants that do not produce strong root systems

  6. Cont’d • A piece of stem is cut from the parent plant and attached to another plant • The cut piece is called the scion and the plant to which it is attached is called the stock • When wood stems are used as scions, the process is called grafting. • When buds are used as scions, the process is called budding.

  7. Cont’d • Grafting works best when plants are dormant because wounds created can heal before new growth starts.

  8. Figure 24-17

  9. Agriculture • Agriculture is the systematic cultivation of plants • Developed about 10,000 to 12,000 years ago • Agriculture is the principal occupation of humans • Most people of world depend on a few crop plants such as wheat, rice, and corn for the bulk of their food supply. • About 80% of US cropland is used to grow just four crops: corn, wheat, soybeans, and hay.

More Related