Crop breeders conduct trials to assess performance of elite breeding lines/germplasm accessions across locations and/or years to identify promising ones for use as cultivars and/or for use in breeding programmes. It is hypothesized that in a given location, genotypes’ multi-year performance are more predictive of their performance in the next/future years. However, only a few researchers have examined this hypothesis. To test this hypothesis, we predicted genotypes’ present-year’s performance based on their previous 1-, 2-, 3- and 4-years’ performance using fresh pod yield data from 53 dolichos bean genotypes evaluated across 5 years. We used two statistics, namely yield relative to environment (year) maximum (YREM) and best linear unbiased predictors (BLUP) as measures of genotypes’ performance for fresh pod yield in dolichos bean. Correlation coefficients of genotypes’ present-year’s performance with previous 1-, 2-, 3- and 4-years’ performance were used as measures of predictive power. The results of our study provided adequate evidence to show that that single-year dolichos bean genotypes’ YREM and BLUP have sufficient power to predict their future 1-year/multiple-years’ performance and to identify superior genotypes. These findings adequately support the common practice by breeders/cultivar sponsors of withdrawing their cultivars from the tests based on a single-year trial.

作物育种者进行试验以评估不同地区和/或年份的优良育种系/种质的表现，以鉴定出有前途的品种用作栽培品种和/或用于育种计划。假设在给定的位置，基因型的多年表现更能预测其未来/未来年的表现。但是，只有少数研究者研究了这一假设。为了检验这一假设，我们使用过去5年中评估的53种豆类豆基因型的新鲜荚果产量数据，根据基因型在过去1年，2年，3年和4年的表现预测了今年的表现。我们使用了两种统计数据，即相对于环境（年）的最高产量（YREM）和最佳线性无偏预测因子（BLUP）作为衡量扁豆中新鲜荚果产量的基因型表现的指标。基因型的当年表现与以前的1、2、3和4年表现的相关系数被用作预测能力的量度。我们的研究结果提供了充分的证据，表明单年豆类基因型的YREM和BLUP具有足够的能力来预测其未来1年/多年的表现并确定优良的基因型。这些发现充分支持了育种者/品种赞助者基于单年试验从试验中撤回其品种的常规做法。我们的研究结果提供了充分的证据，表明单年豆类基因型的YREM和BLUP具有足够的能力来预测其未来1年/多年的表现并确定优良的基因型。这些发现充分支持了育种者/品种赞助者基于单年试验从试验中撤回其品种的常规做法。我们的研究结果提供了充分的证据，表明单年豆类基因型的YREM和BLUP具有足够的能力来预测其未来1年/多年的表现并确定优良的基因型。这些发现充分支持了育种者/品种赞助者基于一项为期一年的试验从试验中退出其品种的惯例。