Yield performance and GGE biplot analysis of wheat genotypes under two irrigation treatments at El Bajío, Mexico

In Guanajuato, Mexico, water deficits have dramatically increased in recent years due to over-exploitation of this resource. The objective was to identify high yielding wheat (Triticum spp.) varieties under two irrigation regimes. The experiments were planted at Celaya, Guanajuato, for two consecuti...

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Bibliographic Details
Published in:Chilean journal of agricultural research 2019-04, Vol.79 (2), p.234-242
Main Authors: Buenrostro-Rodríguez, Juan F., Solís-Moya, Ernesto, Gámez-Vázquez, Alfredo J., Raya-Pérez, Juan C., Mandujano-Bueno, Andrés, Cervantes-Ortiz, Francisco, Covarrubias-Prieto, Jorge
Format: Article
Language:English
Subjects:
Agricultural production
AGRICULTURE, MULTIDISCIPLINARY
AGRONOMY
Analysis
Biomass
Crop yield
Efficiency
Experiments
Exploitation
Genotype
Genotypes
Gluten
Grain
Irrigation
Plant breeding
Plot (Narrative)
Regression analysis
Seasons
Split-plot design
Variance analysis
Water shortages
Water supply
Wheat
Winter
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Summary:In Guanajuato, Mexico, water deficits have dramatically increased in recent years due to over-exploitation of this resource. The objective was to identify high yielding wheat (Triticum spp.) varieties under two irrigation regimes. The experiments were planted at Celaya, Guanajuato, for two consecutive (2013-2014 and 2015-2016) growing seasons (GS). Eleven commercial varieties and nine experimental lines were evaluated under 3 or 4 irrigation regimes; split-plot design with 4 replicates was considered; data on yield performance and its components were measured. There were significant differences between GS and number of irrigation regimes (p [less than or equal to] 0.01) for most evaluated traits. ANOVA showed significant differences for all traits in the study, except for the 1000-grains weight. Growing seasons affected yield, grains number [m.sup.-2] and biomass, mainly; on last cropping season, grain yield was higher (1.8 t [ha.sup.-1]) than first one; strong gluten genotypes were more stable, as compared with the soft gluten genotypes. Some experimental varieties exceeded commercial varieties, which means success in wheat breeding. Genotypes Experimental Line D and control 'Barcenas F2002' under 3 irrigations regime treatment showed the highest grain yield (7.7 and 7.0 t [ha.sup.-1], respectively). On 4 irrigations regime, the best yielding genotypes were experimental lines D, and H, with 6.5 and 6.1 t [ha.sup.-1], respectively. Based on regression deviations the most stable and predictable wheat genotypes were strong gluten genotypes. Key words: Grain yield, growing seasons, irrigation regimes, stability, Triticum spp., wheat genotypes.
ISSN:0718-5839
0718-5820
0718-5839
DOI:10.4067/S0718-58392019000200234