CHAPTER1 OBJECTVES OF PLANT BREEDING 产植物育种月标 BY s Niu Yingze (牛应门
植物育种目标 BY Niu Yingze （牛应泽） Dept. of Plant Breeding and Seed Engineering CHAPTER 1 OBJECTIVES OF PLANT BREEDING
Chapter 1 Breeding Objectives 育种目标 Study Goals of This Chapter Main Objectives in Current Plant Breeding General Principles for Decision of Plant Breeding Objectives 2021/2/21 2
2021/2/21 2 Study Goals of This Chapter • Main Objectives in Current Plant Breeding • General Principles for Decision of Plant Breeding Objectives Chapter 1 Breeding Objectives 育种目标
What Are Plant breeding objectives? Plant breeding objectives are the desired required characteristics for a new crop variety, such as Yield, Quality, Resistance Maturity, Adaptability, etc. See p. 12 2021/2/21
2021/2/21 3 What Are Plant Breeding Objectives? Plant breeding objectives are the desired / required characteristics for a new crop variety, such as Yield, Quality, Resistance, Maturity, Adaptability, etc.) See p. 12
s 1 The Main Characters in Plant Breeding Objectives l. Yield The Main Factors Affecting Crop Yield: 1) Main components of yield: Cereals(rice, wheat, maize, sorghum)禾谷类 Ears/plant, Ear size( grains/ear), 1000-seed weight, plant types leguminous plants豆类植物 Pods/plant, Grains/pod, 100-seed weight, no of Branches Rapeseed油菜 Pods/plant, Seeds/pod, 1000-seed weight, no of Branches Chinese cabbages大白菜 Heads/mu, Weight/ head arationalconbinuiionof yield 2021/2/21 componenisyis veryunyporill g
2021/2/21 4 1. Yield The Main Factors Affecting Crop Yield: 1) Main components of yield: • Cereals (rice, wheat, maize,sorghum) 禾谷类 Ears/plant, Ear size( grains/ear), 1000-seed weight, plant types • leguminous plants 豆类植物 Pods/plant, Grains/pod, 100-seed weight, no. of Branches • Rapeseed 油菜 Pods/plant, Seeds/pod, 1000-seed weight, no. of Branches • Chinese Cabbages 大白菜 Heads/mu, Weight / head §1 The Main Characters in Plant Breeding Objectives A rational combination of yield components is very important
2) Plant type(Ideotypes) size, shape, hight (Associated to plant density and production) Plant forms: Tight紧凑型( for high density) Loose松散型( for low density) Intermediate中间型 Plant height: Tall. dwarf semi-dwarf Economical coefficient经济系数 3) Photosynthetic efficiency光合效率 C3-less efficient: C4-more efficient Duration of green leaf Plant form or shape植物形态
2021/2/21 5 2) Plant type (Ideotypes): size, shape, hight (Associated to plant density and production) Plant forms: Tight 紧凑型(for high density) Loose 松散型(for low density) Intermediate 中间型 Plant height: Tall, Dwarf, semi-dwarf Economical coefficient 经济系数 3) Photosynthetic efficiency 光合效率 C3 — less efficient； C4 — more efficient Duration of green leaf Plant form or shape 植物形态