Increasing the response to selection in plant breeding programs by reducing the time required to complete a generation of inbreeding can significantly shorten the time to release a cultivar. Recently, ‘speed breeding’ strategies that manage temperature, photoperiod, and micronutrients showed a significant reduction in time to inbreeding in several crops. The goal of this study was to determine if the speed breeding system can be effectively applied to oat (Avena sativa L.) for a single‐seed descent breeding scheme and to determine if seeds can be harvested early with acceptable germination for breeding purposes. Two systems were evaluated using eight genetically diverse oat genotypes under speed breeding (22‐h photoperiod) and normal growing conditions (16 h) in a randomized complete block design with a factorial arrangement of treatments and three replications. Our results indicated a significant reduction in time for all the phenological stages evaluated when speed breeding was used, compared with normal growing conditions. In particular, the reduction in time to flowering date was 11 d (62 vs. 51 d on average). Germination evaluations indicated that by 21 d after flowering, it was possible to obtain acceptable germination levels for all genotypes evaluated. This should be of great importance in breeding systems where single‐seed descent can be used.

中文翻译：

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快速育种和早期穗收获加快了燕麦（Avena sativa L.）的育种周期

通过减少完成近交世代所需的时间来增加植物育种程序中对选择的响应，可以显着缩短释放​​品种的时间。最近，控制温度，光周期和微量营养素的“快速育种”策略显示了几种作物近交时间的显着减少。这项研究的目的是确定速度育种系统是否可以有效地应用于燕麦（燕麦）L.）进行单种子后代育种计划，并确定是否可以以可接受的发芽率尽早收获种子用于育种目的。在随机完整的区组设计中，采用因子分解处理和三组重复的方法，在快速育种（22 h光周期）和正常生长条件（16 h）下，使用八种遗传上不同的燕麦基因型评估了两个系统。我们的结果表明，与正常生长条件相比，使用快速育种评估的所有物候期的时间显着减少。特别是，到开花日期的时间减少了11天（平均62天比51天）。萌发评估表明，到开花后21天，所有评估的基因型均可获得可接受的萌发水平。