Mariana V Chiozza, Kyle A. Parmley, W. Schapaugh, A. R. Asebedo, Asheesh K. Singh, Fernando E Miguez
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引用次数: 0
摘要
大豆[Glycine max L. (Merr.)]的高通量作物表型(HTP)已被用于估算种子产量,准确度各不相同。该领域的研究通常使用不同的机器学习方法,根据作物图像预测种子产量,重点放在分析上。另一方面,大豆育种界仍有很大一部分人利用线性方法将冠层性状与种子产量联系起来,并依赖于解析性。我们的研究试图解决以往建模方法固有的可解释性、范围和系统理解方面的局限性。我们利用经验数据和模拟数据相结合的方法来增强实验足迹,并探索遗传(G)、环境(E)和管理(M)的综合效应。我们使用灵活的函数,不假定冠层性状与种子产量之间存在预先确定的反应。大豆成熟期、无性繁殖期和生殖期的持续时间、收获指数(HI)、潜在叶片大小、播种日期和植株数量等因素都会影响冠层-种子产量关系的形状以及冠层最佳值,在冠层最佳值上应进行高产基因型的筛选。这项工作表明,如果考虑采用类似的建模方法,HTP 在大豆育种计划中的应用还有改进的余地。
Changes in the leaf area-seed yield relationship in soybean driven by genetic, management and environments: Implications for High-Throughput Phenotyping
High-throughput crop phenotyping (HTP) in soybean [Glycine max L. (Merr.)] has been used to estimate seed yield with varying degrees of accuracy. Research in this area typically makes use of different machine learning approaches to predict seed yield based on crop images with a strong focus on analytics. On the other hand, a significant part of the soybean breeding community still utilizes linear approaches to relate canopy traits and seed yield relying on parsimony. Our research attempted to address the limitations related to interpretability, scope and system comprehension inherent in previous modelling approaches. We utilized a combination of empirical and simulated data to augment the experimental footprint as well as to explore the combined effects of genetics (G), environments (E) and management (M). We use flexible functions without assuming a pre-determined response between canopy traits and seed yield. Factors such as soybean maturity date, duration of vegetative and reproductive periods, harvest index (HI), potential leaf size, planting date and plant population affected the shape of the canopy-seed yield relationship as well as the canopy optimum values at which selection of high yielding genotypes should be conducted. This work demonstrates that there are avenues for improved application of HTP in soybean breeding programs if similar modelling approaches are considered.