Design and analysis of unreplicated plant breeding trials

未重复植物育种试验的设计和分析

• 批准号: 178695240
• 负责人: Professor Dr. Hans-Peter Piepho
• 金额: --
• 依托单位: Institut für Kulturpflanzenwissenschaften (340)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/178695240?language=en
• 关键词: Design; analysis; unreplicated; plant; breeding

Early generation plant breeding trials are often laid out according to unreplicated designs. Replicated checks may be used for error control, for example in augmented designs based on an incomplete block design for checks which are augmented with unreplicated entries. Traditional augmented designs require considerable resources to be spent on genotypes that are not themselves of interest. Therefore, it has been suggested to replace checks with partially replicated entries, leading to so-called prep designs. In the present proposal we suggest combining both ideas to develop what we call augmented prep designs. A non-trivial design problem arises when trials are to be performed at multiple locations. The main challenge then is how to augment the blocks so as to balance the number of pairwise concurrences. This task can be tackled in different ways based on the use (-arrays which are well-known as the basis for (-designs in fully replicated experiments. Furthermore, we also explore the refinement of designs when analysis by spatial models is envisioned. Robustness of the designs to the presence of genotype-environment interaction is also investigated.

早期世代植物育种试验通常是根据未复制的设计进行的。复制的检查可用于差错控制，例如在基于用未复制的条目扩展的检查的不完全区块设计的扩展设计中。传统的增强设计需要花费相当多的资源在本身并不感兴趣的基因类型上。因此，有人建议用部分复制的条目取代支票，从而导致所谓的PREP设计。在目前的提案中，我们建议将这两种想法结合起来，以开发我们所称的增强预习设计。当试验要在多个地点进行时，就会出现一个很大的设计问题。因此，主要的挑战是如何增加块，以便平衡成对并发的数量。这项任务可以根据使用的(-阵列以不同的方式来处理，这些阵列众所周知是完全重复实验中的(-设计的基础。此外，我们还探讨了在设想通过空间模型进行分析时设计的精细化。此外，还研究了设计对基因-环境交互作用的稳健性。

项目成果

Visual Scorings of Drought Stress Intensity as Covariates for Improved Variety Trial Analysis

干旱胁迫强度的视觉评分作为改进品种试验分析的协变量

• DOI: 10.1111/jac.12025
• 发表时间: 2013
• 期刊: Journal of Agronomy and Crop Science
• 影响因子: 3.5
• 作者: Mühleisen;Maurer;Möhring;Piepho
• 通讯作者: Piepho

Efficiency of augmented p-rep designs in multi-environmental trials

• DOI: 10.1007/s00122-014-2278-y
• 发表时间: 2014-05-01
• 期刊: THEORETICAL AND APPLIED GENETICS
• 影响因子: 5.4
• 作者: Moehring, Jens;Williams, Emlyn R.;Piepho, Hans-Peter
• 通讯作者: Piepho, Hans-Peter