Juan F. Buenrostro-Rodríguez1, Ernesto Solís-Moya2, Alfredo J. Gámez-Vázquez2, Juan C. Raya-Pérez1, Andrés Mandujano-Bueno2, Francisco Cervantes-Ortiz1, Jorge Covarrubias-Prieto1*
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 ≤ 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-2 and biomass, mainly; on last cropping season, grain yield was higher (1.8 t ha-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 ‘Bárcenas F2002’ under 3 irrigations regime treatment showed the highest grain yield (7.7 and 7.0 t ha-1, respectively). On 4 irrigations regime, the best yielding genotypes were experimental lines D, and H, with 6.5 and 6.1 t ha-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.
1Tecnológico Nacional de México/I.T. Roque, Carretera Celaya-Juventino Rosas, km 8, CP 38110, Celaya, Guanajuato, México.
*Corresponding author (email@example.com).
2Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Campo Experimental Bajío, Carretera Celaya-San Miguel de Allende, 6.5 km, CP 38110, Celaya, Guanajuato, México.