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| Lanna,Anna Cristina; Coelho,Gesimária Ribeiro Costa; Moreira,Alécio Souza; Terra,Thiago Gledson Rios; Brondani,Claudio; Saraiva,Gabriel Rios; Lemos,Frederico da Silva; Guimarães,Paulo Henrique Ramos; Morais Júnior,Odilon Peixoto; Vianello,Rosana Pereira. |
| ABSTRACT: Upland rice is cultivated mostly in Latin America and Africa by small farmers and in areas with risk of dry spells. This study evaluated morphophysiological mechanisms of upland rice associated to drought adaptation. A set of 25 upland rice genotypes were grown in a plant phenotyping platform during 2015 and 2017 under regular irrigation and water restriction. We evaluated morphophysiological traits in shoots (vegetative structures growth, gas exchange, water use efficiency, carboxylation efficiency, water status) and roots (length, surface area, volume and diameter), as well as agronomic traits (grain yield and its components). There was a reduction in grain yield by up to 54 % and 58 % in 2015 and 2017, respectively, under water deficit. Five... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain yield; Gas exchange; Water status; Root system; Vegetative morphology. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000500603 |
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