Adaptability and phenotypic stability of soybean cultivars for grain yield and oil content

Abstract

ABSTRACT. The aim of this study was to verify the adaptability and stability of soybean cultivars with regards to yield and oil content. Data of soybean yield and oil content were used from experiments set up in six environments in the 2011/12 and 2012/13 crop seasons in the municipalities of Patos de Minas, Uberaba, Lavras, and São Gotardo, Minas Gerais, Brazil, testing 36 commercial soybean cultivars of both conventional and transgenic varieties. The Wricke method and GGE biplot analysis were used to evaluate adaptability and stability of these cultivars. Large variations were observed in grain yield in relation to the different environments studied, showing that these materials are adaptable. The cultivars exhibited significant differences in oil content. The cultivars BRSGO204 (Goiânia) and BRSMG (Garantia) exhibited the greatest average grain yield in the different environments studied, and the cultivar BRSMG 760 SRR had the greatest oil content among the cultivars evaluated. Ecovalence was adopted to identify the 2 K.B. Silva et al. ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 15 (2): gmr.15026756 most stable cultivars, and the estimates were nearly uniform both for grain yield and oil content, showing a variation of 0.07 and 0.01%, respectively. The GGE biplot was efficient at identifying cultivars with high adaptability and phenotype stability.

Molecular Characterization and Stability Analysis for Yield and its Components Traits in Soybean (Glycine max L.)

“…This consistency will help us to use it as an asset genetic fixed under various environments conditions in soybean breeding programs to increase yielding, quality traits, resistance for diseases, adverse environmental conditions through crossing it with sensitive and moderate entries for the environmental stresses such as, salinity and water stress, then the simple selection method will be the second stage among continuing for several generations of agriculture evaluation for accessing to genetic stability and this trend in the genetic improvement will not be unless the parents were highly genetic stability as we explained previously, So we can say that the previous genotypes characterized with highly genetic stability under all conditions of the twelve environments specially the cultivars; (Crawford, Giza 21, Giza 22, Giza 35, Giza 83, Giza 111) for 1000-grain weight, number of grains/plant, grain weight/plant and grain yield/plant traits in figure (1) and (A, B, C, D histograms), respectively. Similar results were in agreement with those reported by Gill and Kumar (1989), Hossain et al, (2003), Popovic et al, (2013), Lakew et al, (2014), Hamawaki et al, (2015) and Silva et al, (2016).…”

“…These results confirmed that adapting and suitability of these soybean entries under all conditions and a strong signal for their genetic stability for different environments studied or even all other environments, Gill and Kumar (1989), Hossain et al, (2003), Popovic et al, (2013), Lakew et al, (2014), Hamawaki et al, (2015) and Silva et al, (2016).…”

“…The differences of mean square due to (environments + (Genotypes X Environments) were highly significant for all traits studied which exhibited that considerable interaction of all entries under different environmental conditions of years, locations and treatments in different years. The variances due to entries were showed to be highly significant for all the traits studied against pooled deviation which means the presence of sufficient genetic variability between the genotypes, Gill and Kumar (1989), Popovic et al, (2013), Selvi et al, (2015), Hamawaki et al, (2015), Akter et al, (2015)and Silva et al, (2016).…”

“…On the other hand the rest of environments were revealed low genetic stability in their interaction using the previous soybean entries. Accordingly, we note that the genotypes; (Crawford, Giza 21, Giza 22, Giza 35, Giza 83, Giza 111) were the most genetic stability entries and recommended for using it under different environments, while the cultivar (Giza 82) coming in the second rank, Gill and Kumar (1989), Mohan and Har Ram (2006), Vera et al, (2013), Popovic et al, (2013), Dewi et al, (2014), Lemes et al, (2015), Lodhi et al, (2015), Hamawaki et al, (2015), Gunjan et al, (2016), Silva et al, (2016) and Tiwari et al, (2016).…”

“…They revealed that the genotypes UFU-008 and UFU-0013 were assorted in special group ( E ) with a concave pattern of adaptability and stability in addition, the entries UFU-001, UFU-002, UFU-006, UFU-0010 and UFU-0011 were bespoken for using in the location (Brazilian Cerrado growing) as well as these cultivars were highly yielding potential. Silva et al, (2016) detected the stability and adaptability in 37 soybean entries during four regions and two seasons for yield components and oil content traits. They revealed that the highest mean values of grain yield and its components traits under different locations for the two seasons were exhibited in the entries (BRSGO204 (Goiânia) and BRSMG (Garantia), while the highest genotype for oil content under the same experiments was (BRSMG 760 SRR), which indicated that these cultivars were recorded high genetic stability and adaptability under many conditions.…”