STABILITY ANALYSES FOR DOUBLE CROPPING IN SOYBEAN [(Glycine max L.) Merrill]

Abstract

Double crop agriculture is a great advantage for the coastal Mediterranean climate. Although a number of soybean varieties have been recommended for cultivation, the information on the stability for double cropping is lacking for the agro-climatic conditions of Mediterranean coastal zone. Ten high-yielding advanced soybean [Glycine max (L.) Merr] lines and four registered soybean varieties having maturity group III and IV (ARISOY, ATAEM7, BRAVO and NOVA) were evaluated for double cropping in different regions and years (2014, 2015 and 2016 in Izmir-Bornova, 2015 and 2016 in Antalya-Aksu). The F test was first applied to check differences of the deviation variances from the zero. In addition, statistics of ecovalance (Wi 2 ) and stability variance (σi 2 ), estimating the contribution of a genotype to total Genotype x Environmental interaction (GxE), were estimated. As a result of this research, two different conclusions were determined. If sufficient water is provide (500-700 mm) BATEM 306 and BATEM 317 lines can be grown, otherwise, the other two (BATEM 207 and BATEM 223) can be suitable to grow in the regional conditions.

Gge Biplot Analysis of Genotype × Environment Interaction in Soybean Grown as a Second Crop

“…The combined analysis of variance revealed significant (P<0.01) effects for all sources of variation (environment, genotype, and G×E interaction) for the seed yield and yield components (Table 3). The interaction between genotype and environment indicates that the genotypes do not have to be a constant for all evaluation environments; in this way, it is important to determine the G×E interaction (Silveira et al, 2016;Ilker et al, 2018b). Genotype and environment accounted for about 2.59% and 51.04% of the total variation for seed yield, respectively, while the GE interaction explained 20.84% of the total variation.…”

Stability Analysis of Some Soybean Genotypes Using Parametric and Nonparametric Methods in Multi-Environments

“…An ideal variety is a genotype that has high mean yield and exhibits very little yield change in different environments. Therefore, stability analyses are important part of the breeding programs (Ilker et al, 2018). In this study, the adaptability and stability of soybean lines developed by the soybean breeding program were assessed using data from yield trials carried out in the different regions of Turkey under second crop conditions during 2014, 2015 and 2016 growing seasons.…”

Oil and Protein Stability in Some Camelina (Camelina sativa L. Crantz) Genotypes

“…Analysis of variance revealed significant (P<0.01) effects for all sources of variation (environment, genotype and G × E interaction) for protein ratio and oil ratio (Table 2). The interaction between genotype and environment (G × E interaction showing that genotypes do not give the same response in different environments) is important in terms of guiding breeders in the selection of regional genotypes (Ilker et al, 2018;Silveira et al, 2016). There was a statistically significant differences of oil and protein content values in Ankara, Şanlıurfa and Eskişehir location.…”