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Asexual Propagation i       Asexual Reproduction in Plants

 Joan L. Alexander  AgEd 750: iPads in Ag Ed (Columbia class)  Dr. Dale Layfield  Dr. Tom Dobbins  July 15, 2012 Asexual Reproduction ii    Lesson # 3 Fall/Sem 1 3 classes (90 min blocks) Asexual propagation is one of the methods used to reproduce plants. It fits into this unit as another (and sometimes faster or more cost effective) way to reproduce plants besides sexual propagation. Growers need to utilize all methods of plant reproduction, based on the time of year, the time frame available, the cost to the grower, and the desired outcome. This lesson focuses on different types of asexual reproductive methods, particularly leaf and stem cuttings, as well as air-layering. Students will utilize materials available to the instructor in participating in hands-on practice, written materials, and video clips available via the internet. UNIT F PLANT PROPAGATION HC:A3-1: Examining Sexual Reproduction of Flowering Plants HC:A3-2: Propagating Plants Sexually HC:A3-3: Propagating Plants by Cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Student Learning Objectives. Instruction in this lesson should result in students <span style="font-family: "Times New Roman","serif"; font-size: 16px;">achieving the following objectives: <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> 1 Report on why plants are propagated asexually. <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Asexual Reproduction 3 <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> 2 Describe leaf and leaf-bud cuttings and how they are used to propagate plants. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> 3 Discern the three types of stem cuttings. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> 4 Explain how root cuttings are prepared for propagation. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> 5 Examine factors that determine the success of rooting of cuttings. <span style="font-family: "Times New Roman","serif"; font-size: 16px;">HC:A3-4: Propagating Plants by Division, Separation, and Layering <span style="font-family: "Times New Roman","serif"; font-size: 16px;">HC:A3-5: Propagating Plants by Grafting and Budding <span style="font-family: "Times New Roman","serif"; font-size: 16px;">HC:A3-6: Propagating Plants by Tissue Culture <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Delivery Methods: <span style="font-family: "Times New Roman","serif"; font-size: 16px;">This unit will be taught by examining the underlying reasons for all organisms to reproduce, then studying each reproduction method by introduction, supporting information, hands-on practice, review, and evaluation (both verbal and written). The green industry will be integrated into this unit, covering the economic reasons for using one method over another. Streaming video clips on taking cuttings will be shown during class time. Discussion about whether a method would or would not be profitable, as well as mathematical scenarios for students to work out themselves, will be attempted. Technology such as QR codes linked to YouTube videos will be used to enhance instruction and pique student interest. The teacher will use an iPad to both introduce and <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Asexual Reproduction 4 <span style="font-family: "Times New Roman","serif"; font-size: 16px;">review material. For special needs students who might not read very well, the videos are great visual aids, and can be replayed any number of times. There is an iTunes app, Notability, that can help a student record spoken words (to help students who do not see well). Notes can also be taken, with pictures or drawings, and exported as attachments in email to students who do not hear, but could read the notes and see the drawings. [] NOTABILTY in the iTunes store: $.99 to download. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Word List: The following terms are presented in this lesson:

<span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ adventitious roots <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ asexual propagation <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ clones <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ growing medium <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ hardwood cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ herbaceous cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ leaf cutting <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ leaf-bud cutting <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ leaf-petiole cutting <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ root cutting <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ semi-hardwood cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ softwood cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ stem cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ sticking cuttings <span style="font-family: "Times New Roman","serif"; font-size: 16px;">_ stock plants

<span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Lesson Outline: <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Opener: Students will be given an entrance slip to be completed as a bell ringer assignment. The instructor will introduce plant reproduction by asking the students to recall the function of reproduction from biology. Sexual vs. asexual reproduction will be discussed in theory for a    <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Asexual Reproduction 5 <span style="font-family: "Times New Roman","serif"; font-size: 16px;">minute or two. The teacher will toss a tennis ball to a student to signal that an answer is needed. That student will toss the ball to another student, who answers the next question. The ball will go around the class until the set of questions has been answered. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Direct Instruction: The teacher will use an iPad attached to the Smartboard to project a presentation on the three types of asexual propagation and their distinguishing characteristics, and a video of each type. The teacher will scaffold learning by having the students connect their prior knowledge to new by using a graphic organizer to cover the three types of asexual propagation and those distinguishing characteristics. <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Demonstration/Independent practice: The students will review information outside of class, (using internet links and QR codes) as well as in class each day. One type of asexual propagation will be completed in lab each of the three days. The teacher will use an iPad to video and take pictures of the process for the students to watch for review. USB microphones will be used to have students explain their procedure as they are doing the lab, while the teacher takes pictures and records the actual lab. Students will label their containers and will be able to take rooted cuttings home at the end of the rooting period. Air-layered cuttings will be available at the end of Semester 1. <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Culminating activity: The exit slip will be used at the conclusion of the last hands-on lab. The three methods of asexual propagation will be reviewed and verbally affirmed. The teacher will show the pictures and video from the iPad as a visual review. A written quiz or test will be assigned as a formal assessment. <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Asexual Reproduction 6 <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Materials:

ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Writing surface ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Copies of sample test ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Visuals from accompanying masters ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Copies of student lab sheet ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Pen or pencil ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Apron ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Plant samples ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Plant rooting hormone ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Paring knives ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Paper towels ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Soil mix ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Cell packs ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">10 x 20 flats ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Water ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">iPad ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Smartboard ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Computer ü <span style="font-family: "Times New Roman","serif"; font-size: 16px;">LCD projector

<span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Assigned Activities: <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Entrance slip <span style="font-family: "Times New Roman","serif"; font-size: 16px;">links handout sheet <span style="font-family: "Times New Roman","serif"; font-size: 16px;">graphic organizer <span style="font-family: "Times New Roman","serif"; font-size: 16px;">lab <span style="font-family: "Times New Roman","serif"; font-size: 16px;">exit slip <span style="font-family: "Times New Roman","serif"; font-size: 16px;">quiz or test <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Evaluation: <span style="font-family: "Times New Roman","serif"; font-size: 16px;">A quiz or test will be given at the conclusion of the lesson, and a written unit test will be administered at the end of the unit. The students will be given a participation (HW/CW = 10%) grade for the lab, and the test grade will be evaluated and the grade recorded. (Tests = 40%)

<span style="font-family: "Times New Roman","serif"; font-size: 16px;">Asexual Reproduction 7 <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> References: <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Brown, Alyson. Plant Propagation from Cuttings. White Flower Farm. Aug 31, 2010. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> [] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Lerner, B Rosie and Michael N. Dana. New Plants From Layering. Purdue University <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Cooperative Extension Service. West Lafayette, IN    <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> [] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Nicholaus, Jill M.. Make More Plants by Propagating African Violets from Leaf cuttings. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Mar 25, 2010. [African Violets 101] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Oklahoma Garden. June 22, 2010. Air Layering. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> [] <span style="color: #222222; font-family: "Times New Roman","serif"; font-size: 16px;">Perry, Dr. Leonard. Extension Professor, University of Vermont. New Life For Old Plants. The <span style="color: #222222; font-family: "Times New Roman","serif"; font-size: 16px;"> Green Mountain Gardener: Winter News Article., University of Vermont Extension, <span style="color: #222222; font-family: "Times New Roman","serif"; font-size: 16px;"> Department of Plant and Soil Science. [] //<span style="font-family: "Times New Roman","serif"; font-size: 16px;">Propagating Plants by Cuttings. //<span style="font-family: "Times New Roman","serif"; font-size: 16px;">Danville, IL: CAERT, Inc. [|www.mycaert.com] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Richter, Skip, Horticulturist. Air Layering. Aug 27, 2009. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> [] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Sandy. Plant Propagation from Cuttings – Coleus. May 4, 2009. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> [] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Asexual Reproduction 8 <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Tamez, Christian. How to Start an African violet. July 20, 2010. <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> [] <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Urbana: University of Illinois Information Technology and Communication Services. //Plant// //<span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Propagation. //<span style="font-family: "Times New Roman","serif"; font-size: 16px;">CD-ROM CD-HO-3 <span style="font-family: "Times New Roman","serif"; font-size: 16px;">Urbana: University of Illinois Information Technology and Communication Services. //Producing Plants by Asexual Propagation.// <span style="font-family: "Times New Roman","serif"; font-size: 16px;"> Subject Matter Unit U5006a