CHAPTER 5 砂CN吧EDNG 选择育神 BY s Niu Yingze (牛应门 Dept of Plant Breeding and Seed Engineering
CHAPTER 5 SELECTION BREEDING 选择育种 BY Niu Yingze （牛应泽） Dept. of Plant Breeding and Seed Engineering
8 1 Significance and Methods of Selection 选择的意义和方法 What is selection Breeding? Conception: p 63 ie, Pedigree Breeding系统育种 Pure line breeding纯系育种 Buk< selection Breeding( Mass selection,混合选择育种)
1. What is Selection Breeding? Conception: p.63. i.e. Pedigree Breeding 系统育种 Pure line Breeding 纯系育种 Bulk-selection Breeding （Mass selection ,混合选择育种) §1 Significance and Methods of Selection 选择的意义和方法
2. The roles of Selection in Plant Improvement No selection, no breeding Selection in plant breeding is genetically not creative, but in certain sense is creative Selection does not create new genes but can create new varieties. Main effects: orientation in variations of plant population accumulation of variations in plants Creation of new cultivars or crop types
2. The Roles of Selection in Plant Improvement ▪ No selection, no breeding ▪ Selection in plant breeding is genetically not creative, but in certain sense is creative Selection does not create new genes but can create new varieties. Main effects: - orientation in variations of plant population - accumulation of variations in plants - Creation of new cultivars or crop types
3. Basic methods of selection 1)Individual selection(Single-plant Selection) Progeny tests, high selection effects 2) Bulk selection(Mass Selection) Without progeny test, low selection effects
3. Basic Methods of Selection 1) Individual Selection (Single-plant Selection) Progeny tests, high selection effects 2) Bulk Selection (Mass Selection) Without progeny test, low selection effects
一次单株选择法 第一年 原始群体 选优株 第二年 选优良 株系 第三年 选优良 品系 第四年 品系比 较 淘汰 对照 当选 品系 品种 品系
一次单株选择法 原始群体 对照 品种 当选 品系 淘汰 品系 第一年 第二年 第三年 第四年 选优良 株系 选优株 品系比 较 选优良 品系