Drought stress, salinity and aluminium toxicity are considered the most critical abiotic factors limiting the growth of soya bean plants, accounting for the low yield of the crop in the Cerrado region. Our hypothesis is that soya bean cultivars have differential morphological responses to stressful environmental conditions. Thus, an experiment was carried out with the purpose of identifying and recommending soya bean genotypes that simultaneously combine adaptability and stability for morphological traits when subjected to stressful environmental conditions. Drought, saline and aluminium stresses were induced in seeds of 25 soya bean cultivars. Seed germination, and length and dry mass of the seedlings were measured. For each trait, adaptability and stability were evaluated by the Lin & Binns method and simultaneously considering all traits for the set of environments. There was significant GxE interaction for all traits evaluated. The genotypes 97R50 IPRO, BMX Bônus IPRO and 98R31 IPRO simultaneously combine adaptability and stability for all traits measured. These genotypes can be cultivated both under optimal and abiotic stress conditions, such as those investigated in this study. Additionally, they can be used as parents in crossing blocks aiming at obtaining genotypes resistant to drought, saline and aluminium toxicity stresses.

中文翻译：

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大豆基因型对非生物胁迫的多元适应性和稳定性

干旱，盐分和铝毒被认为是限制大豆植物生长的最关键的非生物因素，这是塞拉多地区农作物收成低的原因。我们的假设是，大豆品种对压力环境条件具有不同的形态反应。因此，进行了旨在鉴定和推荐大豆基因型的实验，该大豆基因型在遭受压力环境条件下同时兼具对形态性状的适应性和稳定性。在25个大豆品种的种子中引发了干旱，盐碱和铝胁迫。测定种子的发芽率，幼苗的长度和干重。对于每个特征，适应性和稳定性均由Lin＆Co.评估。Binns方法，同时考虑环境集合的所有特征。评估的所有性状均具有显着的GxE相互作用。97R50 IPRO，BMXBônusIPRO和98R31 IPRO基因型同时兼具对所测所有性状的适应性和稳定性。这些基因型可以在最佳和非生物胁迫条件下进行培养，例如本研究中所研究的那些。另外，它们可以用作杂交块的亲本，旨在获得抗干旱，盐和铝毒性胁迫的基因型。这些基因型可以在最佳和非生物胁迫条件下进行培养，例如本研究中所研究的那些。另外，它们可以用作杂交块的亲本，旨在获得抗干旱，盐和铝毒性胁迫的基因型。这些基因型可以在最佳和非生物胁迫条件下进行培养，例如本研究中所研究的那些。另外，它们可以用作杂交块的亲本，旨在获得抗干旱，盐和铝毒性胁迫的基因型。