《植物育种学》课程教学资源（PPT课件讲稿，英文版）CHAPTER 15 RELEASE OF VARIETIES ANDI SEED MULTIPLICATION

ChaPter 15 RELEASE OF VARIETIES AND I ESEED MULTIPLICATION Dept, of Plant Breeding and Seed Engineering

BY Niu Yingze （牛应泽） Dept. of Plant Breeding and Seed Engineering CHAPTER 15 RELEASE OF VARIETIES AND SEED MULTIPLICATION 品种审定与良种繁育

1. Current Regulations ofAgricultural seed Production (1)The Current Seed Law of P.r. China (2) Registration and release of plant cultivars (3)Plant Breeders right (4)Requirements for the seed Enterprises: Capital asset Physical /technical conditions

1. Current Regulations of Agricultural Seed Production (1) The Current Seed Law of P. R. China (2) Registration and Release of Plant Cultivars (3) Plant Breeder’s Right (4) Requirements for the Seed Enterprises: Capital asset; Physical / technical conditions

2. Registration and release of crop varieties The compulsory Tests to pass: (1) Regional tests区域试验 (2) Productive tests( Farmers field tests生产试验 (3) Technical appraisal技术鉴定(鉴定DUS“三性”) (4) Field quality control(test)田间质量鉴定 DUS: D-Distinctness U-Uniformity S- Stabilit

2. Registration and Release of Crop Varieties The compulsory Tests to pass: (1) Regional tests 区域试验 (2) Productive tests (Farmer’s field tests) 生产试验 (3) Technical appraisal 技术鉴定 （鉴定DUS “三性”） (4) Field quality control (test) 田间质量鉴定 DUS: D – Distinctness U – Uniformity S – Stability

8 1 Regional Test of New Varieties 新品种区域化鉴定 1. Regional trials (I)The system National regional test (divided into large regions) Provincial regional test (2 )The task Identification of the main characteristics(productivity, adaptation, yield stability, disease resistance, etc.) Determination of the adaptable regions Selection of suitable varieties for different regions

§1 Regional Test of New Varieties 新品种区域化鉴定 1. Regional trials (1) The System • National regional test (divided into large regions) • Provincial regional test (2) The task • Identification of the main characteristics (Productivity, adaptation, yield stability, disease resistance, etc.) • Determination of the adaptable regions • Selection of suitable varieties for different regions

杂交 淘汰组合 选单株 颐时 从优良株系中选株 同 优良 工 鉴定圃 同上优良一致株系种鉴定圃 同上 F6 鉴定圆 品比试验‖区品种比较 羞种子繁殖 Regional F 鉴定圃 种繁 生多|区域试验 品比试验 〖出试试多点试验 大田推广 图6-3系谱法杂交育种程序示意图(图中略去对照和亲本品种) 西北农业大学主编。作物育种学。1981

Regional trial

3)The methodology of regional trials A Selection of the locations: representative locations B. The Check(reference) variety C Experimental design: Randomized complete block design D Statistics(Yield increase %; Stability and Stability indices) 2. Production trial Production trial. i.e. Farmer land trial 9. arge plot comparison(totally over I mu/variety); 1-2

(3) The methodology of regional trials A. Selection of the locations: representative locations B. The Check (reference) variety C. Experimental design: Randomized complete block design D. Statistics (Yield increase %; Stability and Stability indices) 2. Production Trial Production trial, i.e. Farmer land trial Large plot comparison (totally over 1 mu/variety); 1-2 rep’s

3. Cultivation trial Cultivation trial (Experiment for cultivation techniques) Multiple factors considered planting date planting desity fertilizer application(N, P,K and others) other technical factors Experimental designs Multi-factor designs(Randomized complete block design, split-block design, latin square design,...) Replications=3 or more

• Cultivation trial (Experiment for cultivation techniques) Multiple factors considered: planting date planting desity fertilizer application (N, P, K and others) other technical factors • Experimental designs Multi-factor designs (Randomized complete block design, split-block design, latin square design, … …) Replications = 3 or more 3. Cultivation Trial

Regional Tests of New varieties rias Regional trials(2-3 years) Production trial (farmer land production trial) Cultivational trial urposes Productivity test Adaptability and stability test Optimum growing location test

Regional Tests of New Varieties: Trials Regional trials (2-3 years) Production trial (farmer land production trial) Cultivational trial Purposes Productivity test Adaptability and Stability test Optimum growing location test

3. Analysis of Regional Trials (1)Experiment data(From individual locations Regional trials( or multi-year trials))区域试验或多年份试验 (2)Methods for analysis Combined variance analysis联合方差分析 For Yield advantage over cK and others Regression analysis For parameters of adapta bility and stability Regression coefficient(bi)回归系数 Standard deviation of regression(Sd)离回归标准差

3. Analysis of Regional Trials (1) Experiment data (From individual locations) Regional trials( or multi-year trials) 区域试验或多年份试验 (2) Methods for analysis • Combined variance analysis 联合方差分析 For Yield advantage over CK and others • Regression analysis For Parameters of adaptability and stability Regression coefficient (bi) 回归系数 Standard deviation of regression (Sdi) 离回归标准差

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