文档介绍：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
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
Registration and Release of Crop Varieties
pulsory 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
§1 Regional Test of New Varieties 新品种区域化鉴定
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
Regional trial
(3) The methodology of regional trials
A. Selection of the locations: representative locations
B. The Check (reference) variety
C. Experimental design: plete block design
D. Statistics (Yield increase %; Stability and Stability indices)
2. Production Trial
Production trial, . Farmer land trial
Large parison (totally over 1 mu/variety); 1-2 rep’s
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 (plete block design, split-block design, latin square design, ……)
Replications = 3 or more
3. Cultivation Trial
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