Soares I O, Bruzi A T, Zambiazzi E V, Guilherme S R, Bianchi M C, Silva K B, Fronza V, Teixeira C M
Departamento de Agricultura, Universidade Federal de Lavras, Lavras, MG, Brasil.
Departamento de Biologia, Universidade Federal de Lavras, Lavras, MG, Brasil.
Genet Mol Res. 2017 Aug 17;16(3):gmr-16-03-gmr.16039730. doi: 10.4238/gmr16039730.
Genotypes x environment (G x E) interaction consists of different behavior of genotypes cultivated in different environments. This interaction occurs due to the performance variation of each genotype in different environments. To reduce the effect of the interaction in soybean crops, some studies have been reported in the literature to study their adaptability and stability. However, these studies are still scarce in Minas Gerais State. Thus, the aim of this study was to verify the adaptability and stability of soybean cultivars and identify the cultivars that contribute least to the G x E interaction in Minas Gerais. Six soybean cultivars were evaluated in 9 different environments. The plots were composed of 4 rows of 5 m with a spacing of 0.5 m between rows, and only the two central rows were harvested. The inoculation with Bradyrhizobium japonicum was performed through sowing furrow. The fertilization followed the recommendations of the Soil Fertility Commission of Minas Gerais. Grain yield was evaluated in kg/ha after conversion to 13% moisture. After individual analysis, the joint analysis was performed by grouping the phenotypic means by the Scott and Knott (1974) test. Wricke's ecovalence methodologies and the Annicchiarico confidence index were applied for the adaptability and stability analysis. The interaction was decomposed into a simple and a complex part. The cultivars BRSMG 820RR and BRSMG 760SRR have wide adaptability and stability. The first one presents a better index of confidence and a small contribution to the interaction.
基因型×环境（G×E）互作是指在不同环境中种植的基因型表现出不同的行为。这种互作是由于每个基因型在不同环境中的表现存在差异而产生的。为了减少大豆作物中这种互作的影响，文献中已有一些研究报道来探讨其适应性和稳定性。然而，在米纳斯吉拉斯州，这些研究仍然较少。因此，本研究的目的是验证大豆品种的适应性和稳定性，并确定在米纳斯吉拉斯州对G×E互作贡献最小的品种。在9个不同环境中对6个大豆品种进行了评估。小区由4行、每行5米组成，行距为0.5米，仅收获中间两行。通过播种沟接种慢生根瘤菌。施肥遵循米纳斯吉拉斯州土壤肥力委员会的建议。将籽粒产量换算为含水量13%后，以千克/公顷为单位进行评估。个体分析后，通过斯科特和诺特（1974）检验对表型均值进行分组，进行联合分析。应用里克的生态等价性方法和安妮基亚里科置信指数进行适应性和稳定性分析。将互作分解为简单部分和复杂部分。BRSMG 820RR和BRSMG 760SRR这两个品种具有广泛的适应性和稳定性。第一个品种具有更好的置信指数，对互作的贡献较小。
