000			03199nab a2200421 i 4500
003			BR-BrBNA
005			20240207144911.0
008			240207b2023 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aF50 _b3290
072			_aF60
072			_aK10
100			_aFerreira, Adriana dos Santos
100			_aLeal, Caio César Pereira
100			_aLeite, Moadir de Sousa
100			_aBenedito, Clarisse Pereira
100			_aDutra, Alek Sandro
100			_aAlves, Charline Zaratin
100			_aMorais, Elis Regina Costa de
100			_aPereira, Márcio Dias
100			_aPorceddu, , Marco
100			_aBacchetta, Gianluigi
100			_aTorres, Salvador Barros
245			_aMorphophysiological and biochemical changes in Enterolobium contortisiliquum seedlings under abiotic stresses
500			_aPublicação online; 29 ref.; 6 illus.; Summary (En)
520			_a ABSTRACT - Among the main problems that compromise the development of forest species are water and salt stresses, especially in the early stages of development, when seedlings are more sensitive. Thus, the objective of this study was to evaluate the morphophysiological and biochemical changes in Enterolobium contortisiliquum seedlings subjected to abiotic stresses. The experimental design was randomized complete blocks (RCB), composed of fi ve treatments, with four replicates, and the experimental plot consisted of twenty plants. From the 31st day after sowing, when the seedlings reached approximately 15 cm in height, they began to receive the treatments, which consisted of different levels of electrical conductivity of irrigation water (0.3; 2; 4; 6; 8 dS m-1) for salt stress and periods of water restriction (0; 4; 8; 12 and 16 days without irrigation) for water stress. The traits evaluated were: plant height, root length, stem diameter, number of leaves, leaf area, total dry matter, Dickson quality index, height/shoot dry matter ratio, total soluble sugars, starch, total amino acids and proline. An increase in the electrical conductivity of irrigation water and days without irrigation compromised the development of E. contortisiliquum seedlings, which was intensified from 2 dS m-1 and four days without irrigation for salt and water stresses, respectively. The mechanism of survival of E. contortisiliquum to abiotic stresses involves reduction in the growth and quality of seedlings, with activation of biochemical defense mechanisms of the species. Key words: Fabaceae. Dry forests. Semi-arid region. Salinity. Hydrical stress.
650			_aESSÊNCIA FLORESTAL
650			_aTIMBAÚVA
650			_aÁRVORE ANGIOSPERMA
650			_aDEFICIÊNCIA HÍDRICA
650			_aSALINIDADE
650			_aBIOQUÍMICA VEGETAL
650			_aMORFOLOGIA VEGETAL
773	0		_04290 _9275636 _dFortaleza-CE Universidade Federal do Ceará. Centro de Ciências Agrárias 2002 _o2023-437436 _tRevista Ciência Agronômica (Brazil) _x0045-6888; 1806-6690 (on-line) _gv. 54 p. 1-9; (2023) _wBR2023002363
856			_uhttps://www.scielo.br/j/rca/a/PgcFs6mKMJvKGCXPKpqcsGc/?format=pdf&lang=en
942			_cAnalítica
999			_c298467 _d298467