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The role of phenotypic plasticity of physiological and agronomic traits on the adaptation of spring wheat genotypes to mediterranean environments

dc.contributor.authorElazab, Abdelhalim
dc.contributor.authorCastillo, Dalma
dc.contributor.authorMatus, Iván
dc.contributor.authorRomero-Bravo, Sebastián
dc.contributor.authorEspinoza-Meza, Sergio
dc.contributor.authorSadras, Victor
dc.contributor.authorDel Pozo, Alejandro
dc.date.accessioned2025-04-23T19:34:27Z
dc.date.available2025-04-23T19:34:27Z
dc.date.issued2025
dc.identifier.urihttp://repositorio.ucm.cl/handle/ucm/5976
dc.description.abstractContext Phenotypic plasticity is a valuable perspective to evaluate the genotype x environment interaction in an agronomic context of crop adaptation to stress. This work investigated the phenotypic plasticity of leaf, canopy, and agronomic traits in spring wheat. Objectives Our objectives were to (i) quantify the phenotypic plasticity of physiological and agronomic traits, (ii) probe for correlations between the plasticity of these traits, and (iii) evaluate their role in stressful and favorable environments. Methods We phenotyped 14 spring wheat genotypes grown in 16 Mediterranean-type environments, combining two sites in central Chile, two water regimes (rainfed and with supplemental irrigation), and four growing seasons (2015–2018). Phenotypic plasticity was calculated as the slope of reaction norms relating the trait for each genotype to the environmental mean of the trait. Results The range of phenotypic plasticity was large for grain yield (slopes of reaction norms from 0.79 to 1.19) and shoot dry weight (0.90–1.15). High plasticity correlated with high yield, shoot dry matter, plant height, and spikes per m2 under irrigation, but not under drought. High plasticity of harvest index (HI) was associated with low HI in rainfed and irrigated crops. Plasticity in kernels per spike and thousand kernel weight were not correlated with the trait per se in either condition. The phenotypic plasticity of leaf gas exchange traits varied from 0.81 to 1.21. High plasticity in net assimilation and stomatal conductance were associated with the trait in irrigated but not in drought conditions. The plasticity of the fraction of intercepted PAR and leaf area index ranged from 0.88 to 1.13. High plasticity of the fraction of intercepted PAR correlated with poor performance in irrigated conditions, while high carbon isotope discrimination plasticity was linked to low carbon isotope discrimination under stress. Conclusions Our study elucidates the substantial phenotypic plasticity of spring wheat genotypes across diverse Mediterranean-type environments. We observed varying degrees of plasticity in leaf, canopy, and agronomic traits, with notable correlations between plasticity and trait under different environmental conditions. Our findings underscore the importance of understanding the variation in phenotypic plasticity with trait, genotype, and environment for plant adaptation to stressful and high-yielding conditions.es_CL
dc.language.isoenes_CL
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
dc.sourceField Crops Research, 322, 109740es_CL
dc.subjectCarbon isotope discriminationes_CL
dc.subjectGrain yieldes_CL
dc.subjectLeaf area indexes_CL
dc.subjectLeaf photosynthesises_CL
dc.subjectStomatal conductancees_CL
dc.titleThe role of phenotypic plasticity of physiological and agronomic traits on the adaptation of spring wheat genotypes to mediterranean environmentses_CL
dc.typeArticlees_CL
dc.ucm.facultadFacultad de Ciencias Agrarias y Forestaleses_CL
dc.ucm.indexacionScopuses_CL
dc.ucm.indexacionIsies_CL
dc.ucm.urisciencedirect.ucm.elogim.com/science/article/pii/S037842902500005X?via%3Dihubes_CL
dc.ucm.doidoi.org/10.1016/j.fcr.2025.109740es_CL


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Atribución-NoComercial-SinDerivadas 3.0 Chile
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