Título:	Phenotypic plasticity index as a strategy for selecting water-stress-adapted coffee genotypes.
Autoria:	SANTOS, C. S. dos FREITAS, A. F. de SILVA, G. H. B. da PENNACCHI, J. P. CARVALHO, M. A. de F. SANTOS, M. de O. MORAES, T. S. J. de ABRAHÃO, J. C. de R. PEREIRA, A. A. CARVALHO, G. R.
Afiliação:	CYNTIA STEPHANIA DOS SANTOS, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; ANA FLAVIA DE FREITAS, PITANGUI INSTITUTE OF AGRICULTURAL TECHNOLOGY; GLAUBER HENRIQUE BARBOSA DA SILVA, UNIVERSIDADE FEDERAL DE LAVRAS; JOÃO PAULO PENNACCHI, UNIVERSIDADE FEDERAL DE LAVRAS; MILENE ALVES DE FIGUEIREDO CARVALHO, CNPCA; MELINE DE OLIVEIRA SANTOS, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; TATIANA SILVEIRA JUNQUEIRA DE MORAES, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; JULIANA COSTA DE REZENDE ABRAHÃO, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; ANTONIO ALVES PEREIRA, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; GLADYSTON RODRIGUES CARVALHO, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS.
Ano de publicação:	2023
Referência:	Plants, v. 12, n. 23, 2023.
Páginas:	16 p.
Conteúdo:	The adaptive potential of plants is commonly used as an indicator of genotypes with higher breeding program potential. However, the complexity and interaction of plant metabolic parameters pose a challenge to selection strategies. In this context, this study aimed to explore phenotypic plasticity within the germplasm of Hybrid Timor coffee. Additionally, we assessed the utility of the multivariate phenotypic plasticity index (MVPi) as a promising tool to predict genotype performance across diverse climatic conditions. To achieve this, we evaluated the performance of seven accessions from the Hybrid Timor germplasm in comparison to the Rubi and IPR 100 cultivars, known for their susceptibility and resistance to drought, respectively. The experiment took place in a greenhouse under two conditions: one with normal soil moisture levels near maximum capacity, and the other with a water deficit scenario involving a period of no irrigation followed by rehydration. Data on physiological and biochemical factors were collected at three stages: before applying the water deficit, during its imposition, and after rehydration. Growth data were obtained by the difference between the beginning and end of the experimental period Furthermore, field evaluations of the productivity of the same genotypes were carried out over two consecutive seasons. Based on physiological and biochemical assessments, the MVPi was computed, employing Euclidean distance between principal component multivariate analysis scores. Subsequently, this index was correlated with growth and productivity data through linear regressions. Our findings reveal that the plastic genotypes that are capable of significantly altering physiological and biochemical parameters in response to environmental stimuli exhibited reduced biomass loss in both aerial and root parts. As a result, this positively influenced their productivity. Enhanced plasticity was particularly prominent in accessions from the MG Germplasm Collection: MG 311—Hybrid Timor UFV 428-02, MG 270—Hybrid Timor UFV 377-21, and MG 279—Hybrid Timor UFV 376-31, alongside the Rubi MG 1192 cultivar. The MVPi emerged as a valuable instrument to assess genotype adaptability and predict their performance under varying climatic scenarios.
NAL Thesaurus:	Coffea arabica var. arabica Phenotypic plasticity Water stress Genotype Plant selection guides Plant breeding
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (SAPC)