作物学报2016，Vol.42Issue(1)：43-50,8.DOI:10.3724/SP.J.1006.2016.00043
我国棉花品种区域试验重复次数和试点数量的设计
Design of Test Location Number and Replicate Frequency in the Regional Cot-ton Variety Trials in China
摘要
Abstract
The test location number and the replicate frequency in regional crop trials are important factors in determining both the trial heritability and cultivar selection efficiency. The test location number and replicate frequency for three national cotton regional trials in China were studied using experimental data during the last 15 years according to changes of trial heritability with the increase of test locations and replicates within trials in 2000–2014. The results indicated that three replicates are sufficient to achieve 0.75 of within-trial heritability. The current test locations in the Yangtze River Valley, the Yellow River Valley and the Northwest Inland regions are sufficient to achieve 0.75 of cross-trial heritability. Considering the importance of the regional trials in recommending cotton varieties and the possible trial cancellation due to poor field managements, natural disasters or other non-artificial factors, the optimum number of test locations proposed for the Yangtze River Valley should be maintained at the current level of 20 locations with H=0.90 to ensure enough credibility of regional trials, while that proposed for the Yellow River Valley and the Northwest Inland cotton regions should be increased to 27 and 19 locations with heritability level of 0.90 and 0.85, respectively. The conclusion will provide a theoretical guidance for the optimal configuration of national cotton regional trials and also act as a reference for the rational layout of regional trials in other crops.关键词
棉花(Gossypium hirsutum L.)/区域试验/遗传力/噪信比/重复次数/试点数量/优化配置Key words
Cotton (Gossypium hirsutum L.)/Regional trial/Heritability/Noise-signal quotient/Frequency of replicates/Number of test locations/Optimal allocation引用本文复制引用
许乃银,金石桥,李健..我国棉花品种区域试验重复次数和试点数量的设计[J].作物学报,2016,42(1):43-50,8.基金项目
本研究由国家转基因生物新品种培育重大专项(2012ZX08013015)和全国农业技术推广服务中心项目(012022911108)资助。This study was supported by the Major Project of China on New Varieties of GMO Cultivation (2012ZX08013015) and the Project from the National Extension and Service Center of Agricultural Technology (012022911108) （2012ZX08013015）
