Cassava Breeding Trials - Edaphoclimatic Zone 3: Lowland Tropics; Short or Absent Drought, High Precipitation

Cassava germplasm development at CIAT is centered on the development of improved gene pools for specific edapho-climatic zones with importance for cassava production. The most relevant ecosystems are the semi-and and sub-humid tropics, for which the majority of efforts are devoted. The main selection activity is conducted in sites selected to represent the conditions of the target ecosystem. For each zone, a recurrent selection program with a progressive set of stages is followed. As the stages progress more emphasis is given to traits of lower heritability, because more planting material for each genotype is available and the evaluation can be conducted in bigger plots with replications. Certain selection criteria are of general Importance across ecosystems (i.e. yield potential, dry matter content), while others are specific for each ecosystem (i e. specific pests and/or diseases). This dataset provides CIAT cassava breeding trial data for activities conducted in the Lowland tropics with no pronounced dry season; high rainfall; constant high relative humidity.国际热带农业中心（International Center for Tropical Agriculture，CIAT）的木薯种质资源研发工作，以针对木薯生产具有重要意义的特定土壤气候带培育改良基因库为核心方向。其中最受关注的生态系统为半湿润与亚湿润热带区域，团队的大部分研发精力均投入于此。核心选育工作均在能够代表目标生态系统环境条件的试验站点开展。针对每个区域，均采用分阶段推进的轮回选育方案。随着选育阶段逐步推进，团队会愈发侧重低遗传力性状的筛选——这是因为此时每个基因型可获得更多种植材料，能够在设置重复的更大试验小区中开展性状评价。部分选育标准在所有生态系统中均具有通用性（如产量潜力、干物质含量），而另一些标准则仅针对特定生态系统（如特定病虫害）。本数据集收录了国际热带农业中心（CIAT）在低地热带无明显旱季、高降雨量、相对湿度持续偏高区域开展的木薯育种试验数据。