Cassava Breeding Trials - Edaphoclimatic Zone 2: Lowland Tropics; Acid Soils; Medium to 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 Acid soil savannas; moderate to long dry season; low relative humidity during dry season, Zone.国际热带农业中心（CIAT）的木薯种质资源开发工作，以培育适配木薯生产的特定土壤气候区改良基因库为核心。当前最具研究价值的生态系统为半干旱与亚湿润热带区，绝大多数研发精力均投入于此。核心选择育种活动均在能够代表目标生态系统立地条件的试验点开展。针对每个土壤气候区，均采用分阶段递进的轮回选择育种程序。随着育种阶段的推进，对低遗传力性状的选择权重逐步提升——这是因为各基因型的种植材料数量逐渐增多，可在设置重复的更大面积试验小区中开展性状鉴定。部分选择标准在所有生态系统中均具有普适性（如产量潜力、干物质含量），而另一些标准则因生态系统而异（如特定病虫害）。本数据集涵盖了CIAT在「酸性土壤稀树草原、中长旱季、旱季相对湿度较低」生态区开展的木薯育种试验数据。