《植物育种学》课程教学资源（PPT课件讲稿，英文版）CHAPTER 16 Pathways and Methods of Plant Propagation

CHAPTER 16 Pathways and Methods of Plant Propagation 物的 Dept, of Plant Breeding and Seed Engineering

BY Niu Yingze （牛应泽） Dept. of Plant Breeding and Seed Engineering CHAPTER 16 Pathways and Methods of Plant Propagation 植物的繁殖途径和方法

Study aims and requirements Dififerent Modes of propagation in Plants 2. Methods for Seed Propagation 3. Methods for Vegetative propagation 2021/2/22 Chapter 16 2

2021/2/22 Chapter 16 2 Study Aims and Requirements 1. Different Modes of Propagation in Plants 2. Methods for Seed Propagation 3. Methods for Vegetative Propagation

8 1 Classifications of Plant Propagation Methods植物繁殖的种类 The different terms in English Reproduction生殖,繁殖 Multiplication增殖,繁殖 Propagation繁殖,传播 2021/2/22 Chapter 16

2021/2/22 Chapter 16 3 §1 Classifications of Plant Propagation Methods 植物繁殖的种类 The different terms in English: Reproduction 生殖，繁殖 Multiplication 增殖，繁殖 Propagation 繁殖，传播

1. The Classifications of Plant Propagation Judson et al. (1990) 1.1 Seed Propagation Mainly in Agricultural Crops(annuals, biannual, perennials) Vegetable crops(甘蓝类、白菜类、茄科类) 1.2 Apomictic Propagation Nucellus embryos- citrus, mango Adventitious embryony- Kentucky bluegrass 2021/2/22 Chapter 16

2021/2/22 Chapter 16 4 1. The Classifications of Plant Propagation Hudson et al. （ 1990） 1.1 Seed Propagation Mainly in Agricultural Crops (annuals, biannuals, perennials) Vegetable crops(甘蓝类、白菜类、茄科类） 1.2 Apomictic Propagation Nucellus embryos – citrus, mango Adventitious embryony – Kentucky bluegrass

1.3 Vegetative Propagation Cutting扦插 Sucker吸根 Grafting嫁接 Separation分株 Budding芽接 Division分体 Layering压条 · In vitro culture离体培养 Runner走茎 2021/2/22 Chapter 16

2021/2/22 Chapter 16 5 1.3 Vegetative Propagation • Cutting 扦插 • Grafting 嫁接 • Budding 芽接 • Layering 压条 • Runner 走茎 • Sucker 吸根 • Separation 分株 • Division 分体 • In vitro culture 离体培养

2. The classification of Plant Propagation By Zhao liangjur(赵梁军,2002) The five Kinds Sexual Propagation( seed propagation) Easy and convenient Suitable for large scale production 2. Asexual Propagation Vegetative Propagation) Division propagation Propagation by cutting 2021/2/22 Chapter 16

2021/2/22 Chapter 16 6 2. The Classification of Plant Propagation By Zhao Liangjun（赵梁军，2002） The Five Kinds: • Sexual Propagation ( Seed propagation) • Easy and convenient • Suitable for large scale production 2. Asexual Propagation（Vegetative Propagation） • Division propagation • Propagation by cutting

Grafting propagation Layering propagation 3. Spore Propagation(孢子繁殖) Fern propagation蕨类植物 4. Viviparity(胎生繁殖) Seed germinating in fruits(红树) 5. Tissue culture Propagation( Micropropagation) Most frequently used in ornamental plants Explant ------callus-----differentiation------shoot----root----- complete plant 2021/2/22 Chapter 16

2021/2/22 Chapter 16 7 3. Spore Propagation （孢子繁殖） Fern propagation 蕨类植物 4. Viviparity (胎生繁殖） Seed germinating in fruits (红树） 5. Tissue culture Propagation (Micropropagation) Most frequently used in ornamental plants: Explant ------callus------differentiation------shoot-----root----- complete plant • Grafting propagation • Layering propagation

82 Main Propagation Methods in Plants植物繁殖的种类 1. Seed Propagation The Advantages Simple and easy to propagate Large scale Easy to store and to transport Disadvantages Seed dormancy long juvenile period in fruit trees and wood trees 2021/2/22 Chapter 16

2021/2/22 Chapter 16 8 1. Seed Propagation The Advantages • Simple and easy to propagate • Large scale • Easy to store and to transport Disadvantages • Seed dormancy • Long juvenile period in fruit trees and wood trees §2 Main Propagation Methods in Plants 植物繁殖的种类

(1) Development and harvest of the Seed Grow in good conditions Good maturity and timely harvesting Store in good conditions F 2021/2/22 Chapter 16

2021/2/22 Chapter 16 9 （1）Development and Harvest of the Seed • Grow in good conditions • Good maturity and timely harvesting • Store in good conditions

(2) Dormancy and Germination of Seed dormancy of seed Mechanical reasons Physiological reasons ppv ec Germination of seed Physiological Status Environment factors Water, temperature, oxygen, light 2021/2/22 Chapter 16

2021/2/22 Chapter 16 10 （2）Dormancy and Germination of Seed • Dormancy of seed Mechanical reasons Physiological reasons • Germination of seed Physiological Status Environment factors Water, temperature, oxygen, light