02905nab a2200325 i 4500 BR-BrBNA 20240207152904.0 240207b2023 bl.ar|pooa||| 00| 0 eng | BR-BrBNA eng F30 0329 F60 Rosmaninho, Lucas Barbosa de Castro Dias, Luiz Antônio dos Santos Benjamin, Carolina dos Santos Silva, Martha Freire da Genetic parameters of morpho-agronomic and physiological traits of crambe genotypes under drought conditions Publicação online; 30 ref.; 9 tables; 4 illus.; Summary (En) ABSTRACT - This work aims at evaluating and discriminating crambe genotypes regarding tolerance to water defi cit by means of morpho-agronomic and physiological traits. The trial was carried out in a greenhouse under a randomized complete block design with four blocks, in a 2 x 8 factorial scheme, being two environments (with and without stress) and eight genotypes (FMS CR 1101, FMS CR 1106, FMS CR 1203, FMS CR 1305, FMS CR 1307, FMS CR 1312 and FMS CR 1326 and cultivar FMS Brilhante). The genotypes were evaluated according to physiological and morpho-agronomic traits. The signifi cance of the mean squares was tested by the F test (P < 0.05) and the genetic parameters were estimated as ratio b between the genetic (CVg) and experimental (CVe) coefficients of variation, broad-sense heritability at genotypic mean level ( ˆ2 hm), intraclass correlation (r) and selective accuracy (Ac). In general, water defi cit did not cause severe physiological limitations to the plants. Plant height (PH), total dry mass (TDM) and grain yield (GY) were the traits that stood out for presenting the highest estimates of ratio b, ˆ2 hm, CVg and r, revealing the possibility of genetic gains with the selection. Nevertheless, after evaluating the performance of genotypes in terms of physiological and morpho-agronomic traits, it was concluded that cultivar FMS Brilhante and inbred lines FMS CR 1326 and FMS CR 1106 had the most favorable traits for the selection, therefore, presenting potential for water defi cit tolerance. Key words: Agroenergy. Crambe abyssinca Hostch. Gas exchanges. Plant breeding. Water deficit. PLANTA OLEAGINOSA DEFICIÊNCIA HÍDRICA TROCA GASOSA FISIOLOGIA VEGETAL GENÓTIPO PARÂMETRO GENÉTICO MELHORAMENTO VEGETAL 4290 275636 Fortaleza-CE Universidade Federal do Ceará. Centro de Ciências Agrárias 2002 2023-437436 Revista Ciência Agronômica (Brazil) 0045-6888; 1806-6690 (on-line) v. 54 p. 1-13; (2023) BR2023002364 https://www.scielo.br/j/rca/a/TgSPFNTXCqPNz8kfYQfFP7r/?format=pdf&lang=en Analítica 298468 298468