Adaptability and stability of soybean cultivars in the region of Chapadões

ABSTRACT Grain yield is a constant concern in soybean breeding programs for being highly influenced by the environment. This trait can be significantly affected by the sowing times. Thus, for the correct cultivar recommendation, methods of stability and adaptability analysis are used to verify the genotype x environment interaction at different sowing times. In this study, ten soybean cultivars were evaluated in 2016/2017 and 2017/2018 seasons, at different sowing times. Each experiment was carried out in a randomized block design with three replications. The methods of Eberhart & Russel and Lin & Binns were used for cultivars recommendation for general, favorable, and unfavorable environments. Cultivars CS2728, BONUS, and BRS1074 show high yield and predictability and therefore are the most suitable for the region of Chapadão do Sul.

摘要：籽粒产量是大豆育种项目中始终备受关注的性状，因其极易受环境影响。该性状亦会受到播种期的显著影响。因此，为实现精准的品种推荐，需借助稳定性与适应性分析方法，验证不同播种期下的基因型×环境互作（genotype × environment interaction）效应。本研究于2016/2017及2017/2018两个生长季内，针对不同播种期的10个大豆品种开展评价试验。各试验均采用随机区组设计，设置3次重复。本研究采用埃伯哈特-拉塞尔法（Eberhart & Russel）与林-宾斯法（Lin & Binns）两种分析方法，针对广适环境、有利环境及不利环境下的品种推荐需求开展分析。试验结果显示，品种CS2728、BONUS及BRS1074兼具较高产量与预测稳定性，因此最适配南查帕当（Chapadão do Sul）地区的种植需求。